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JP5969325B2 - Channel member and electronic device using the same - Google Patents

Channel member and electronic device using the same Download PDF

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Publication number
JP5969325B2
JP5969325B2 JP2012190267A JP2012190267A JP5969325B2 JP 5969325 B2 JP5969325 B2 JP 5969325B2 JP 2012190267 A JP2012190267 A JP 2012190267A JP 2012190267 A JP2012190267 A JP 2012190267A JP 5969325 B2 JP5969325 B2 JP 5969325B2
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metal member
metal
flow path
base
brazing material
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JP2014046326A (en
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健治 坪川
健治 坪川
阿部　裕一
裕一 阿部
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Kyocera Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73251—Location after the connecting process on different surfaces
    • H01L2224/73265—Layer and wire connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1301—Thyristor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/13—Discrete devices, e.g. 3 terminal devices
    • H01L2924/1304—Transistor
    • H01L2924/1305—Bipolar Junction Transistor [BJT]
    • H01L2924/13055—Insulated gate bipolar transistor [IGBT]

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  • Ceramic Products (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Description

本発明は、流路部材およびこれを用いた電子装置に関する。   The present invention relates to a flow path member and an electronic device using the same.

近年、半導体装置には、一方の面に金属部材が接合されたセラミックス流路部材の内部に冷媒を流すことによって熱交換を行なう流路部材が用いられ、その金属部材が電極や放熱部材として利用されている。   In recent years, semiconductor devices have used flow channel members that exchange heat by flowing a coolant through a ceramic flow channel member having a metal member bonded to one surface, and the metal members are used as electrodes and heat dissipation members. Has been.

また、セラミックス基体に金属部材を接合するにあたり、例えば、特許文献１では、セラミックス基体の上に高融点金属、ニッケル層、金属介在層、導体層の順番に形成した半導体装置用部材が開示されている。   In joining a metal member to a ceramic substrate, for example, Patent Document 1 discloses a semiconductor device member formed on a ceramic substrate in the order of a refractory metal, a nickel layer, a metal intervening layer, and a conductor layer. Yes.

特開2000-323619号公報JP 2000-323619 A

ところで、現在金属部材を設けてなる流路部材においては、より安価な流路部材が求められている。   By the way, the cheaper channel member is calculated | required in the channel member which provides a metal member now.

それゆえ、本発明は、より安価な構成とした流路部材および電子装置を提供することを目的とするものである。   Therefore, an object of the present invention is to provide a flow path member and an electronic device having a more inexpensive configuration.

本発明の流路部材は、内部に流体が流れる流路を有するセラミックス焼結体からなる基体と、該基体上に設けられたニッケルを主成分とする第１金属部材と、該第１金属部材上に設けられたアルミニウムを主成分とする第２金属部材とを有し、前記基体と前記第１金属部材と、前記第１金属部材と前記第２金属部材とのそれぞれが金属ろう材にて接合され、前記第１金属部材の厚みが、前記第２金属部材の厚みよりも厚いことを特徴とするものである。
The flow path member of the present invention includes a base made of a ceramic sintered body having a flow path through which a fluid flows, a first metal member mainly composed of nickel provided on the base, and the first metal member. A second metal member mainly composed of aluminum provided on the substrate, wherein the base, the first metal member, and the first metal member and the second metal member are each made of a metal brazing material. The thickness of the first metal member is greater than the thickness of the second metal member .

また、本発明の電子装置は、上記構成の流路部材の第２金属部材上に電子部品が搭載されていることを特徴とするものである。   The electronic device according to the present invention is characterized in that an electronic component is mounted on the second metal member of the flow path member having the above-described configuration.

本発明の流路部材によれば、温度変化が繰り返された際、熱膨張係数の違いによって生じる応力を緩和できるため、基体の破損を抑制できる。 According to the flow path member of the present invention, when the temperature change is repeated, the stress caused by the difference in the thermal expansion coefficient can be relieved, so that the breakage of the substrate can be suppressed .

また、本発明の電子装置は、上記構成の流路部材の前記第２金属部材上に電子部品が搭載されていることから、シンプルな構造で、安価な電子装置とすることができる。   In addition, since the electronic device of the present invention has an electronic component mounted on the second metal member of the flow path member having the above-described configuration, it can be an inexpensive electronic device with a simple structure.

本実施形態の流路部材の一例を示す断面図である。It is sectional drawing which shows an example of the flow-path member of this embodiment. 本実施形態の流路部材の他の一例を一部抜粋して示す断面図であり、（ａ）は、基体および第２金属部材に対して第１金属部材が内側に配置されている、（ｂ）は、基体および第１金属部材に対して第２金属部材が内側に配置されている、（ｃ）は基体１に対して、第１金属部材および第２金属部材が内側に配置されている。It is sectional drawing which extracts and shows a part of other example of the flow-path member of this embodiment, (a) is the 1st metal member arrange | positioned inside with respect to a base | substrate and a 2nd metal member. b) the second metal member is disposed inside the base and the first metal member, and (c) the first metal member and the second metal member are disposed inside the base 1. Yes. 本実施形態の電子装置の一例を示す断面図である。It is sectional drawing which shows an example of the electronic device of this embodiment.

以下、本発明の実施の形態について説明する。   Embodiments of the present invention will be described below.

図１は、本実施形態の流路部材の一例を示す断面図である。   FIG. 1 is a cross-sectional view illustrating an example of the flow path member of the present embodiment.

図１に示す本実施形態の流路部材10は、内部に流体を流すための流路１ａを有するセラミックス焼結体からなる基体１上に、基体１側から順番に、金属ろう材４ａ、ニッケルを主成分とする第１金属部材２、金属ろう材４ｂ、アルミニウムを主成分とする第２金属部材３が形成されている。なお、セラミックス焼結体からなる基体１より、金属ろう材４ａ，ニッケルを主成分とする第１金属部材２，金属ろう材４ｂ、アルミニウムを主成分とする第２金属部材３の順番に融点が低く、また、熱膨張係数が基体１、第１金属部材２、第２金属部材３の順番に大きくなる。具体的には、セラミック焼結体からなる基体１の熱膨張係数は３〜11ｐｐｍ、ニッケルを主成分とする第１金属部材２の熱膨張係数は12〜14ｐｐｍ、アルミニウムを主成分とする第２金属部材３の熱膨張係数は19〜24ｐｐｍである。   A flow path member 10 of the present embodiment shown in FIG. 1 includes a metal brazing material 4a and nickel on a base 1 made of a ceramic sintered body having a flow path 1a for flowing a fluid in order from the base 1 side. The first metal member 2 containing as a main component, the metal brazing material 4b, and the second metal member 3 containing aluminum as a main component are formed. It should be noted that the melting point in the order of the metal brazing material 4a, the first metal member 2 containing nickel as a main component 2, the metal brazing material 4b, and the second metal member 3 containing aluminum as a main component from the base 1 made of a ceramic sintered body. In addition, the coefficient of thermal expansion increases in the order of the base 1, the first metal member 2, and the second metal member 3. Specifically, the thermal expansion coefficient of the base 1 made of a ceramic sintered body is 3 to 11 ppm, the thermal expansion coefficient of the first metal member 2 containing nickel as the main component is 12 to 14 ppm, and the second containing aluminum as the main component. The thermal expansion coefficient of the metal member 3 is 19 to 24 ppm.

そして、本実施形態の流路部材10は、内部に流体が流れる流路を有するセラミックス焼結体からなる基体１と、基体上に設けられたニッケルを主成分とする第１金属部材２と、第１金属部材２上に設けられたアルミニウムを主成分とする第２金属部材３とを有し、基体１と第１金属部材２と、第１金属部材２と第２金属部材３とのそれぞれが金属ろう材にて接合されていることが重要である。   The flow path member 10 of the present embodiment includes a base 1 made of a ceramic sintered body having a flow path through which a fluid flows, a first metal member 2 mainly composed of nickel provided on the base, A second metal member 3 mainly composed of aluminum provided on the first metal member 2, each of the base 1, the first metal member 2, the first metal member 2, and the second metal member 3; It is important that these are joined with a metal brazing material.

本実施形態の流路部材10は、基体１上に設ける金属部材の構成を、金属ろう材４ａ、ニッケルを主成分とする第１金属部材２、金属ろう材４ｂ、アルミニウムを主成分とする第２金属部材３の順とすることで、これらの部材を一括で熱処理して形成することができる。それにより、各部材を別々に設ける必要がないことから、製造コストを低減することができ、安価な流路部材10とすることができる。   The flow path member 10 of the present embodiment has the same structure of the metal member provided on the base 1 as the metal brazing material 4a, the first metal member 2 mainly composed of nickel, the metal brazing material 4b, and the first composed mainly of aluminum. By arranging the two metal members 3 in this order, these members can be formed by heat treatment in a lump. Thereby, since it is not necessary to provide each member separately, the manufacturing cost can be reduced, and the inexpensive flow path member 10 can be obtained.

なお、図１に示す流路部材の一例を示す断面図では、流路部材10の左側に流体を流路部材10内に供給するための供給口１ｂと、流路部材10の右側に流体を流路部材10から排出するための排出口１ｃとが設けられている。このような構成とすれば、流体を基体１の流路１ａに流すことによって、基体１の熱交換効率を向上することができる。   In the cross-sectional view showing an example of the flow path member shown in FIG. 1, the supply port 1 b for supplying fluid into the flow path member 10 on the left side of the flow path member 10 and the fluid on the right side of the flow path member 10. A discharge port 1c for discharging from the flow path member 10 is provided. With such a configuration, the heat exchange efficiency of the substrate 1 can be improved by flowing the fluid through the flow path 1 a of the substrate 1.

また、供給口１ｂから供給された流体は、流路１ａを流れて排出口１ｃから排出されるが、流路１ａ内に障壁や突起体などを設けることによって意図的に乱流を発生させることにより、熱交換効率をさらに向上させることができる。   In addition, the fluid supplied from the supply port 1b flows through the flow path 1a and is discharged from the discharge port 1c, but intentionally generates turbulence by providing a barrier, a protrusion, or the like in the flow path 1a. Thus, the heat exchange efficiency can be further improved.

なお、障壁や突起体の材質は、基体１と同じ材質であることが好ましい。このような構成とすれば、基体１と障壁や突起体との接合性が高く、高い圧力の流体を流すことができるので、熱交換効率を向上することができる。   In addition, it is preferable that the material of the barrier or the protrusion is the same material as that of the substrate 1. With such a configuration, the bonding property between the base body 1 and the barrier or the protrusion is high, and a fluid with a high pressure can be flowed, so that the heat exchange efficiency can be improved.

以下に、本実施形態の流路部材10を構成する各部材について順に説明する。   Below, each member which comprises the flow-path member 10 of this embodiment is demonstrated in order.

セラミックス焼結体からなる基体１は、アルミナ，ジルコニア，ムライト，炭化ケイ素，窒化珪素および窒化アルミニウムやこれらの複合材料からなることが好ましく、特にアルミナを主成分とすることが好ましい。アルミナを主成分とすれば、原料が安価であり、
また、大気雰囲気で焼成できることから製造コストも安価にすることが可能である。なお、主成分とは、構成する成分のうち80質量％以上の割合で占める成分のことをいい、以下同意である。 The substrate 1 made of a ceramic sintered body is preferably made of alumina, zirconia, mullite, silicon carbide, silicon nitride, aluminum nitride, or a composite material thereof, and particularly preferably contains alumina as a main component. If alumina is the main component, the raw material is inexpensive,
In addition, since it can be fired in an air atmosphere, the manufacturing cost can be reduced. In addition, a main component means the component which occupies in the ratio of 80 mass% or more among the components to comprise, and is following consent.

ここで、セラミックス焼結体からなる基体１は、アルミナを主成分とする場合には、マグネシア，シリカ，カルシアおよびジルコニアなどを含んでも構わない。マグネシア，シリカおよびカルシアなどの焼結助剤成分を含むことによって、低温での焼成を可能とし、より安価に製造することができる。また、ジルコニアを含むことによって、基体１の機械的強度を向上することができるとともに、基体１の熱膨張係数を大きくすることができ、第１金属部材２および第２金属部材３の熱膨張係数により近づけることができる。それにより、冷却および発熱を繰り返す環境における熱的信頼性を向上することができる。   Here, the base 1 made of a ceramic sintered body may contain magnesia, silica, calcia, zirconia, and the like when alumina is the main component. By including a sintering aid component such as magnesia, silica and calcia, firing at a low temperature is possible, and production can be performed at a lower cost. Further, by including zirconia, the mechanical strength of the base body 1 can be improved, the thermal expansion coefficient of the base body 1 can be increased, and the thermal expansion coefficients of the first metal member 2 and the second metal member 3 can be increased. Can be closer. Thereby, thermal reliability in an environment where cooling and heat generation are repeated can be improved.

続いて、第１金属部材２はニッケルを主成分としてなればよく、一方、第２金属部材３はアルミニウムを主成分としてなればよい、なおそれぞれにおいては、シリカや酸化硼素などのガラス成分を含んでも構わない。このようなガラス成分を含むことによって、金属ペースト印刷法で第１金属部材２や第２金属部材３を形成する際には、金属ろう材との密着強度を上げることができる。   Subsequently, the first metal member 2 only needs to have nickel as a main component, while the second metal member 3 only needs to have aluminum as a main component, each including a glass component such as silica or boron oxide. It doesn't matter. By including such a glass component, when forming the 1st metal member 2 and the 2nd metal member 3 by a metal paste printing method, the adhesive strength with a metal brazing material can be raised.

また、第１金属部材２および第２金属部材３の厚みはそれぞれ50μｍ以上700μｍ以下
であることが好ましい。この厚みの範囲であれば、セラミックス焼結体からなる基体１と各金属部材との接合強度を維持しながら、基体１上に各金属部材を形成した後に一括で熱処理した場合でも、各金属部材が熱処理の際に生じる膨張および収縮の影響が小さくできる。それにより、基体１に対して反りの発生を抑制できるとともに、セラミックス焼結体からなる基体１と第１金属部材２および第２金属部材３との熱膨張係数の違いによって生じる応力を緩和することができる。 Moreover, it is preferable that the thickness of the 1st metal member 2 and the 2nd metal member 3 is 50 micrometers or more and 700 micrometers or less, respectively. Within this thickness range, even when the metal members are formed on the substrate 1 and heat-treated in a lump while maintaining the bonding strength between the substrate 1 made of a ceramic sintered body and each metal member, each metal member However, the influence of expansion and contraction generated during heat treatment can be reduced. Thereby, generation | occurrence | production of curvature with respect to the base | substrate 1 can be suppressed, and the stress which arises by the difference in the thermal expansion coefficient of the base | substrate 1 which consists of ceramic sintered bodies, and the 1st metal member 2 and the 2nd metal member 3 is relieve | moderated. Can do.

金属ろう材としてはアルミニウム，銀および銅などを主成分として含むものを用いることができる。金属ろう材からなる層４ａ，４ｂの厚みは10μｍ以上200μｍ以下であるこ
とが好ましい。この厚みの範囲であれば、金属ろう材からなる層４ａ，４ｂにおける熱抵抗を小さくしながら、基体１と第１金属部材２と、第１金属部材２と第２金属部材３とのそれぞれの接合性を高めることができるので、冷却および発熱を繰り返す環境における熱的信頼性を向上することができる。 As the metal brazing material, a material containing aluminum, silver, copper or the like as a main component can be used. The thickness of the layers 4a and 4b made of the metal brazing material is preferably 10 μm or more and 200 μm or less. Within this thickness range, each of the base 1, the first metal member 2, the first metal member 2, and the second metal member 3 is reduced while reducing the thermal resistance in the layers 4 a and 4 b made of the metal brazing material. Since the bondability can be improved, the thermal reliability in an environment where cooling and heat generation are repeated can be improved.

また、本実施形態の流路部材10は、第１金属部材２の厚みが、第２金属部材３の厚みよりも厚いことが好ましい。このように、第１金属部材２の厚みが、第２金属部材３の厚みよりも厚いことにより、高温および低温の温度変化が繰り返し作用することによって、セラミックス焼結体からなる基体１と第２金属部材３との熱膨張係数の違いによって生じる応力を緩和でき、基体１の破損を抑制できる。   In the flow path member 10 of the present embodiment, the thickness of the first metal member 2 is preferably thicker than the thickness of the second metal member 3. As described above, when the thickness of the first metal member 2 is thicker than the thickness of the second metal member 3, the temperature change between the high temperature and the low temperature acts repeatedly, and the base 1 made of the ceramic sintered body and the second The stress caused by the difference in thermal expansion coefficient with the metal member 3 can be relieved, and damage to the substrate 1 can be suppressed.

特に、第２金属部材３の厚みに対する第１金属部材２の厚みが、1.3倍以上1.7倍以下であることが好ましい。この厚みの範囲であれば、基体であるセラミックス焼結体からなる基体１と第２金属部材３との熱膨張係数の違いによって生じる応力についても、第１金属部材２を有することによって緩和できるうえに、基体１の反りの発生および基体１と各金属部材との剥がれの発生を抑えることができる。   In particular, the thickness of the first metal member 2 with respect to the thickness of the second metal member 3 is preferably 1.3 times or more and 1.7 times or less. Within this thickness range, the stress caused by the difference in thermal expansion coefficient between the base 1 made of a ceramic sintered body as the base and the second metal member 3 can be alleviated by having the first metal member 2. In addition, the occurrence of warpage of the substrate 1 and the occurrence of peeling between the substrate 1 and each metal member can be suppressed.

ここで、本実施形態の流路部材10は、金属ろう材４ａ，４ｂがアルミニウムを含むことが好ましい。このように第２金属部材３と同じ成分であるアルミニウムを含むことで、第２金属部材３と第１金属部材２との接合性を高めることができる。それにより、熱的信頼性を向上することができる。また、セラミックス焼結体からなる基体１が金属ろう材４ａに含まれるアルミニウムと反応することにより化合物を形成し、基体１と第１金属部材２
との接合性を高めることができる。特に、基体１がアルミナを主成分とするセラミック焼結体であれば、基体１に含まれるアルミナと金属ろう材４ａに含まれるアルミニウムとが反応することにより、基体１と第１金属部材２との接合性を高めることができる。 Here, as for the flow path member 10 of this embodiment, it is preferable that the metal brazing materials 4a and 4b contain aluminum. As described above, by including aluminum which is the same component as the second metal member 3, the bondability between the second metal member 3 and the first metal member 2 can be enhanced. Thereby, thermal reliability can be improved. Further, the base 1 made of a ceramic sintered body reacts with aluminum contained in the metal brazing material 4a to form a compound, and the base 1 and the first metal member 2 are formed.
Bondability can be improved. In particular, if the base body 1 is a ceramic sintered body containing alumina as a main component, the base body 1 and the first metal member 2 are reacted with each other by reacting alumina contained in the base body 1 with aluminum contained in the metal brazing material 4a. It is possible to improve the bondability.

なお、第１金属部材２と第２金属部材３との間に存在する金属ろう材層４ｂは、セラミックス焼結体からなる基体１と第１金属部材２との間に存在する金属ろう材層４ａよりもアルミニウムを多く含んでいることが好ましい。このような構成とすれば、各層の熱膨張係数を、基体１から第２金属部材３に向けて徐々に変化させることができる。それにより、金属部材２で受けた熱による影響を緩和でき、流路部材10の反りの発生を抑えることができるとともに、基体１および各層の接合性を高めることができる。   The metal brazing material layer 4b existing between the first metal member 2 and the second metal member 3 is a metal brazing material layer existing between the base 1 made of a ceramic sintered body and the first metal member 2. It is preferable that more aluminum is contained than 4a. With such a configuration, the thermal expansion coefficient of each layer can be gradually changed from the base 1 toward the second metal member 3. Thereby, the influence of the heat received by the metal member 2 can be alleviated, the occurrence of warpage of the flow path member 10 can be suppressed, and the bondability between the substrate 1 and each layer can be improved.

また、本実施形態の流路部材10は、金属ろう材４ａ，４ｂはニッケルを含むことが好ましい。このように金属ろう材が、第１金属部材２と同じ成分であるニッケルを含むことから第１金属部材２と基体１と、第１金属部材２と第２金属部材３とのそれぞれが接合性を高めることができるので、熱的信頼性をさらに向上することができる。   In the flow path member 10 of the present embodiment, the metal brazing materials 4a and 4b preferably contain nickel. Thus, since the metal brazing material contains nickel which is the same component as the first metal member 2, the first metal member 2, the base 1, the first metal member 2, and the second metal member 3 are joined. Therefore, thermal reliability can be further improved.

なお、基体１，第１金属部材２，第２金属部材３および金属ろう材層４ａ，４ｂの材質は、流路部材から所定の大きさの試料を切り出し、走査型電子顕微鏡（ＳＥＭ）または透過型電子顕微鏡（ＴＥＭ）によるエネルギー分散型Ｘ線（ＥＤＳ）分析を行なうことによって、材質の特定および含有量も確認することができる。また、ＩＣＰ発光分光分析法または蛍光Ｘ線分析法によっても材質の特定および含有量を確認することができる。   The base 1, the first metal member 2, the second metal member 3, and the metal brazing material layers 4 a and 4 b are cut out of a sample of a predetermined size from the flow path member and scanned by a scanning electron microscope (SEM) or transmission. By performing energy dispersive X-ray (EDS) analysis using a scanning electron microscope (TEM), it is possible to confirm the specificity and content of the material. Further, the identification and content of the material can also be confirmed by ICP emission spectroscopy or fluorescent X-ray analysis.

なお、上述において、本実施形態の流路部材10を構成する金属ろう材４ａ，４ｂの両方が、ニッケルを含む場合とアルミニウムを含む場合とを説明してきたが、金属ろう材４ａがニッケルを含む構成、金属ろう材４ｂがアルミニウムを含む構成の組み合わせて用いてもよい。   In the above description, the case where both of the metal brazing materials 4a and 4b constituting the flow path member 10 of the present embodiment contain nickel and the case of containing aluminum have been described. However, the metal brazing material 4a contains nickel. You may use combining the structure and the structure in which the metal brazing material 4b contains aluminum.

図２は、本実施形態の流路部材の他の一例を一部抜粋して示す断面図であり、（ａ）は第１金属部材が他の部材より内側に配置されている、（ｂ）は第２金属部材が他の部材より内側に配置されている、（ｃ）基体１に対して、第１金属部材および第２金属部材が内側に配置されている。   FIG. 2 is a cross-sectional view showing a part of another example of the flow path member of the present embodiment, in which (a) shows the first metal member disposed inside the other members, (b) The second metal member is disposed inside the other members. (C) The first metal member and the second metal member are disposed inside the base 1.

本実施形態の流路部材20ａ〜20ｃは、流路部材20ａ〜20ｃの厚み方向における断面視において、第１金属部材２、第２金属部材３および基体１のうち少なくとも１つが、他の部材よりも内側に配置されていることが好ましい。   In the flow path members 20a to 20c of the present embodiment, at least one of the first metal member 2, the second metal member 3, and the base body 1 is more than the other members in a cross-sectional view in the thickness direction of the flow path members 20a to 20c. Is also preferably arranged inside.

図２（ａ）は、基体１および第２金属部材３に対して、第１金属部材２が内側に配置されている断面図である。このような構成とすれば、流路部材20ａに対し樹脂やガラスをモールド処理することによって形成される保護層（図示せず）との接触面積を増やすことができるので、接合性を高めることができ、外部からの衝撃に対し信頼性を向上することができる。また、樹脂やガラスが食い込む様な形態になるので、さらに高い接合性を得ることができるので、外部からの衝撃に対しさらに信頼性を向上することができる。   FIG. 2A is a cross-sectional view in which the first metal member 2 is disposed inside the base 1 and the second metal member 3. With such a configuration, the contact area with the protective layer (not shown) formed by molding resin or glass on the flow path member 20a can be increased. It is possible to improve reliability against external impacts. Moreover, since it becomes a form which a resin and glass bite in, since further high bondability can be acquired, reliability can be improved further with respect to the impact from the outside.

また、図２（ｂ）は、基体１および第１金属部材２対して、第２金属部材３が内側に配置されている断面図である。このような構成とすれば、流路部材20ｂに対し樹脂やガラスをモールド処理することによって形成される保護層との接触面積を増やすことができるので、接合性を高めることができ、外部からの衝撃に対する信頼性を向上することができる。   FIG. 2B is a cross-sectional view in which the second metal member 3 is disposed inside the base 1 and the first metal member 2. With such a configuration, the contact area with the protective layer formed by molding resin or glass on the flow path member 20b can be increased. Reliability against impact can be improved.

また、図２（ｃ）は、基体１に対して、第１金属部材２および第２金属部材３が内側に
配置されている断面図である。この様な構成とすれば、流路部材20ｃに対し樹脂やガラスをモールド処理することによって形成される保護層との接触面積を増やすことができるので、接合性を高めることができ、外部からの衝撃に対する信頼性を向上することができる。 FIG. 2C is a cross-sectional view in which the first metal member 2 and the second metal member 3 are disposed on the inner side with respect to the base 1. With such a configuration, the contact area with the protective layer formed by molding resin or glass on the flow path member 20c can be increased. Reliability against impact can be improved.

さらに、（以下図示せず）基体１の表面に凹部を設け、図２（ａ）および（ｃ）の形態の各金属部材が構成され、第１金属部材２が、基体１の凹部内に載置される構成であっても上記と同じ効果を有することができる。   Furthermore, a recess is provided on the surface of the base 1 (not shown below) to form each metal member in the form of FIGS. 2A and 2C, and the first metal member 2 is placed in the recess of the base 1. Even if it is the structure put, it can have the same effect as the above.

なお、第１金属部材２および第２金属部材３は、他の部材よりも50μｍ以上100μｍ以
下内側に配置されていることが好ましい。この範囲であれば、他の部材との接合性を保ちつつ、樹脂やガラスとの接合性を高めることができる。 In addition, it is preferable that the 1st metal member 2 and the 2nd metal member 3 are arrange | positioned inside 50 micrometers or more and 100 micrometers or less rather than another member. If it is this range, bondability with resin and glass can be improved, maintaining bondability with another member.

図３は、本実施形態の電子装置の一例を示す断面図である。   FIG. 3 is a cross-sectional view illustrating an example of the electronic device of the present embodiment.

本実施形態の電子装置30は、第１金属部材２および第２金属部材３が２ヶ所に設けられており、一方の第１金属部材２および配線導体となる第２金属部材３の上に電極パット33を設けさらにその上に発熱体となる電子部品31を載置し、ボンディングワイヤ32よって他方の第１金属部材２および配線導体となる第２金属部材３と接合して、外部電源（図示せず）と通電することによって、電子部品31を作動することができる。したがって、流路部材10に配線導体となる第２金属部材３が形成されているために、部品点数が少ないシンプルな構造で、発熱体である電子部品31を搭載できるとともに、電子部品31と流路部材10の流路を流れる流体間には熱抵抗となる部品点数を最小限にしたため熱交換効率が高く、かつ、コストを抑えられる。   In the electronic device 30 of the present embodiment, the first metal member 2 and the second metal member 3 are provided at two locations, and the electrode is formed on one of the first metal member 2 and the second metal member 3 serving as a wiring conductor. A pad 33 is provided, and an electronic component 31 serving as a heating element is mounted thereon, and is bonded to the other first metal member 2 and the second metal member 3 serving as a wiring conductor by a bonding wire 32, and an external power source (FIG. The electronic component 31 can be operated by energizing with (not shown). Therefore, since the second metal member 3 serving as a wiring conductor is formed in the flow path member 10, the electronic component 31 that is a heating element can be mounted with a simple structure with a small number of components, and Since the number of parts that become thermal resistance is minimized between the fluids flowing through the flow path of the path member 10, the heat exchange efficiency is high and the cost can be suppressed.

そして、この電子装置30は、例えば、電子部品をＬＥＤ（発光ダイオード）、ＩＧＢＴ（絶縁ゲート・バイポーラ・トランジスタ）素子、ＧＴＯ（ゲートターンオフサイリスタ）素子などのパワー半導体とすることによって、ＬＥＤヘッドライトや、また、ＰＣＵ（パワーコントロールユニット）などの半導体モジュールや直流高電圧電源装置およびスイッチング装置など作動時に高熱を発する電子装置30として用いることができる。   The electronic device 30 can be used for LED headlights, for example, by using electronic components as power semiconductors such as LEDs (light emitting diodes), IGBTs (insulated gate / bipolar transistors) elements, GTO (gate turn-off thyristors) elements, etc. Moreover, it can be used as an electronic device 30 that generates high heat during operation, such as a semiconductor module such as a PCU (power control unit), a DC high-voltage power supply device, and a switching device.

以下、本実施形態の流路部材10，20〜20ｃの製造方法の一例について示す。   Hereinafter, an example of a method for manufacturing the flow path members 10 and 20 to 20c of the present embodiment will be described.

まず、基体１の作製にあたって、主成分をアルミナとする場合には、純度が90％以上であり平均粒径が１μｍ程度のアルミナ原料を用意し、これにバインダ、焼結助剤成分、溶媒および分散剤等を所定量添加して混合したスラリーを作製する。そして、このスラリーを、ドクターブレード法によって成形するか、噴霧造粒法（スプレードライ法）により噴霧乾燥して造粒した後、ロールコンパクション法によってシート成形することによって、焼成後の厚みが0.5ｍｍ以上1.5ｍｍ以下となる厚みであるグリーンシート成形体を作製する。   First, when the main component is alumina in the production of the substrate 1, an alumina raw material having a purity of 90% or more and an average particle size of about 1 μm is prepared, and a binder, a sintering aid component, a solvent, and A predetermined amount of a dispersant or the like is added and mixed to prepare a slurry. And after shaping | molding this slurry by the doctor blade method or spray-drying and granulating by the spray granulation method (spray dry method), the thickness after baking is 0.5 mm by forming a sheet | seat by the roll compaction method. A green sheet molded body having a thickness of 1.5 mm or less is prepared.

つぎに、作製した複数のグリーンシート成形体を基体の中を流体が流れる流路となるように所望の形状に積層するのが良く、障壁や突起体などを形成するためには、必要に応じて、各グリーンシートの厚みを変更したり、積層するグリーンシートの枚数を適所で変更してもよい。   Next, it is preferable to stack a plurality of produced green sheet molded bodies in a desired shape so as to form a flow path through which the fluid flows in the substrate. In order to form barriers, protrusions, etc., as necessary Thus, the thickness of each green sheet may be changed, or the number of green sheets to be stacked may be changed at an appropriate place.

また、それぞれのグリーンシートの接合面には、グリーンシートを作製するときに用いたものと同様のスラリーを接合剤として塗布し、グリーンシートを積層したあとに、平板状の加圧具を介して約0.5ＭＰａ程度の加圧を加え、そのあとに、約50〜70℃の温度で約10〜15時間乾燥させる。   In addition, a slurry similar to that used for producing the green sheet is applied as a bonding agent to the bonding surface of each green sheet, and after the green sheets are laminated, a flat plate-like pressurizing tool is used. A pressure of about 0.5 MPa is applied, followed by drying at a temperature of about 50 to 70 ° C. for about 10 to 15 hours.

なお、積層する前のグリーンシート成形体に対し、マイクロドリル加工やブラスト処理を行なうことによって、障壁、突起体や凹部などを形成してもよい。また、積層後に切削加工を施すことによって、供給口１ｂおよび排出口１ｃを形成してもよい。   In addition, you may form a barrier, a protrusion, a recessed part, etc. by performing a micro drill process or a blast process with respect to the green sheet molded object before laminating | stacking. Moreover, you may form the supply port 1b and the discharge port 1c by giving a cutting process after lamination | stacking.

そして、グリーンシート成形体を積層し、乾燥および脱脂した後、セラミック原料に応じた雰囲気および焼成温度において、例えば公知のプッシャー方式やローラー方式の連続トンネル炉で焼成することにより、内部に流体を流すための流路１ａを有した基板の形状とした基体１を得ることができる。   Then, after the green sheet molded body is laminated, dried and degreased, in an atmosphere and firing temperature according to the ceramic raw material, for example, by firing in a known pusher type or roller type continuous tunnel furnace, the fluid is allowed to flow inside Therefore, it is possible to obtain the base body 1 having the shape of the substrate having the flow path 1a.

つぎに、アルミニウム，銀および銅などを主成分とする金属ろう材を印刷法で基体１上に塗布した後に乾燥し、ニッケルを主成分とする第１金属部材２をメッキ法または有機金属化合物で構成されたレジネート溶液を用いた塗布法で形成した後に乾燥し、その上に再び金属ろう材を印刷法で塗布し乾燥を行なう。そして、アルミニウムを主成分とする金属板を用意し、金属ろう材と密着させる。つぎに、不活性ガス雰囲気か真空雰囲気において、アルミニウムを主成分とする金属板の融点未満の温度で焼成することによって基体１の上に第１金属部材２および第２金属部材３を金属ろう材４ａ，４ｂにて接合することができる。このように、熱処理を一度に行なうことによって、工数を減らすことができるので、製造コストを抑えることができ、安価な流路部材とすることができる。なお、第１金属部材２の厚みを第２金属部材３の厚みより厚く形成するためには、第２金属部材３の厚みより厚くなるように第１金属部材２を複数回にわけて形成すればよい。   Next, a metal brazing material mainly composed of aluminum, silver, copper or the like is applied onto the substrate 1 by a printing method and then dried, and the first metal member 2 whose main component is nickel is plated using an organometallic compound. After forming by the apply | coating method using the comprised resinate solution, it dries, and a metal brazing material is apply | coated again by the printing method on it, and it dries. And the metal plate which has aluminum as a main component is prepared and it adheres with a metal brazing material. Next, the first metal member 2 and the second metal member 3 are placed on the base 1 by firing in an inert gas atmosphere or a vacuum atmosphere at a temperature lower than the melting point of the metal plate mainly composed of aluminum. It can join by 4a, 4b. As described above, since the number of steps can be reduced by performing the heat treatment at a time, the manufacturing cost can be suppressed and an inexpensive flow path member can be obtained. In order to form the first metal member 2 thicker than the second metal member 3, the first metal member 2 is formed in multiple times so as to be thicker than the second metal member 3. That's fine.

また、図２（ａ）に示すように、第１金属部材２が他の部材よりも内側に配置されるためには、第１金属部材２よりも幅の広い第２金属部材３を用意し接合するか、ニッケル選択性のある公知のエッチング溶液を使用し、所望の形状になるようにエッチング法で作製すればよい。   Also, as shown in FIG. 2 (a), in order for the first metal member 2 to be disposed inside the other members, a second metal member 3 wider than the first metal member 2 is prepared. What is necessary is just to produce by the etching method so that it may join or a well-known etching solution with nickel selectivity may be used, and it may become a desired shape.

また、図２（ｂ）に示すように、第２金属部材３が他の部材よりも内側に配置されるためには、第１金属部材２よりも幅の狭い第２金属部材３を用意し接合して作製すればよい。
また、図３（ｃ）に示すように、第１金属部材２および第２金属部材３がその他の部材より内側に配置されるためには、基体１の幅よりも狭い第１金属部材２および第２金属部材３を用意し接合して作製すればよい。 Also, as shown in FIG. 2B, in order for the second metal member 3 to be disposed inside the other members, a second metal member 3 having a width smaller than that of the first metal member 2 is prepared. What is necessary is just to produce by joining.
In addition, as shown in FIG. 3C, in order for the first metal member 2 and the second metal member 3 to be arranged inside other members, the first metal member 2 narrower than the width of the base 1 and The second metal member 3 may be prepared and bonded.

１：基体
１ａ：流路，１ｂ：供給口，１ｃ：排出口
２：第１金属部材
３：第２金属部材
４ａ，４ｂ：金属ろう材
10，20ａ〜20ｃ：流路部材
30：電子装置
31：電子部品 1: substrate 1a: flow path, 1b: supply port, 1c: discharge port 2: first metal member
3: Second metal member 4a, 4b: Metal brazing material
10, 20a-20c: Channel member
30: Electronic equipment
31: Electronic components

Claims (5)

内部に流体が流れる流路を有するセラミックス焼結体からなる基体と、
該基体上に設けられたニッケルを主成分とする第１金属部材と、
該第１金属部材上に設けられたアルミニウムを主成分とする第２金属部材とを有し、
前記基体と前記第１金属部材と、前記第１金属部材と前記第２金属部材とのそれぞれが金属ろう材にて接合され、前記第１金属部材の厚みが、前記第２金属部材の厚みよりも厚いことを特徴とする流路部材。 A substrate made of a ceramic sintered body having a flow path through which a fluid flows;
A first metal member mainly composed of nickel provided on the substrate;
A second metal member mainly composed of aluminum provided on the first metal member;
Each of the base, the first metal member, the first metal member, and the second metal member is joined with a metal brazing material , and the thickness of the first metal member is greater than the thickness of the second metal member. A channel member characterized by being thick . 前記金属ろう材がアルミニウムを含むことを特徴とする請求項１に記載の流路部材。 The flow path member according to claim 1, wherein the metal brazing material contains aluminum. 前記金属ろう材がニッケルを含むことを特徴とする請求項１または請求項２に記載の流路部材。   The flow path member according to claim 1, wherein the metal brazing material contains nickel. 前記流路部材の厚み方向における断面視において、前記第１金属部材、前記第２金属部材および前記基体のうち少なくとも１つが、他の部材よりも内側に配置されていることを特徴とする請求項１乃至請求項３のいずれかに記載の流路部材。 The cross-sectional view in the thickness direction of the flow path member is characterized in that at least one of the first metal member, the second metal member, and the base body is disposed inside the other member. The flow path member according to any one of claims 1 to 3 . 請求項１乃至請求項４のいずれかに記載の流路部材の前記第２金属部材上に電子部品が搭載されていることを特徴とする電子装置。 An electronic device, wherein an electronic component is mounted on the second metal member of the flow path member according to any one of claims 1 to 4 .
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