JP2002302732A - Ultrafine grained cubic bn sintered compact - Google Patents
Ultrafine grained cubic bn sintered compactInfo
- Publication number
- JP2002302732A JP2002302732A JP2001109393A JP2001109393A JP2002302732A JP 2002302732 A JP2002302732 A JP 2002302732A JP 2001109393 A JP2001109393 A JP 2001109393A JP 2001109393 A JP2001109393 A JP 2001109393A JP 2002302732 A JP2002302732 A JP 2002302732A
- Authority
- JP
- Japan
- Prior art keywords
- cbn
- sintered body
- ultrafine
- hard member
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Cutting Tools, Boring Holders, And Turrets (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、極めて微粒であり
かつ一定の結合相の厚さを有するｃＢＮ基焼結体および
さらに超硬合金との一体焼結体ならびにそれらと基材と
の接合体に関するものである。本発明は切削工具、耐摩
耗工具、回転工具、摺動部材、熱伝導部材などで特に優
れた特性を示すものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cBN-based sintered body having a very fine grain size and a fixed binder phase thickness, a sintered body integrally formed with a cemented carbide, and a bonded body thereof with a base material. It is about. The present invention exhibits particularly excellent characteristics in cutting tools, wear-resistant tools, rotary tools, sliding members, heat conducting members, and the like.
【０００２】[0002]
【従来の技術】近年、エンジンのバブルシート材、ギヤ
部品などに焼結金属が使われることが主流となりつつあ
る。この焼結金属の加工には一般的に超硬合金が用いら
れるが、工具摩耗の進行が極めて早いことからｃBN基焼
結体も使用されているが、従来のｃBN基焼結体では超硬
合金に比べて大きな工具寿命の改善は得られていなかっ
た。2. Description of the Related Art In recent years, the use of sintered metal for bubble sheet materials and gear parts of engines has become mainstream. Cemented carbide is generally used for processing this sintered metal, but cBN-based sintered bodies are also used because tool wear progresses very quickly. No significant improvement in tool life was obtained compared to the alloy.
【０００３】そのため、ｃBN基焼結体の耐摩耗性を種々
改良する発明が提案されている。特開２０００−１９０
１０８号公報では、ｃBNを20容量％以上含有する多結晶
硬質焼結体の切れ刃が曲面であって、その曲率半径が0.
1〜5μmの多結晶硬質焼結体切削工具であって、その焼
結体中のｃBN粒子の粒径が0.01〜5μmに制限することが
開示されている。特開２０００−４４３５０号公報で
は、45〜70体積％ｃBNと結合相からなる焼結体におい
て、結合相が二次元的に連続しており、cBN粒子の平均
粒度が2〜6μm以下であり、結合相厚みの平均値が1.5μ
m以下で、その標準偏差が0.9以下であるcBN焼結体が開
示されている。特開２０００−４４３４７号公報では、
45〜70体積％ｃBNと結合相からなる焼結体において、結
合相が二次元的に連続しており、cBN粒子の平均粒度が
0.01〜2μm以下であり、結合相厚みの平均値が1.0μm以
下で、その標準偏差が0.7以下であるcBN焼結体が開示さ
れている。[0003] Therefore, inventions have been proposed for variously improving the wear resistance of cBN-based sintered bodies. JP-A-2000-190
In Japanese Patent Publication No. 108, the cutting edge of a polycrystalline hard sintered body containing 20% by volume or more of cBN is a curved surface, and the radius of curvature is 0.
It discloses a cutting tool for a polycrystalline hard sintered body having a size of 1 to 5 μm, wherein the particle size of cBN particles in the sintered body is limited to 0.01 to 5 μm. In JP-A-2000-44350, in a sintered body composed of 45 to 70% by volume of cBN and a binder phase, the binder phase is two-dimensionally continuous, and the average particle size of the cBN particles is 2 to 6 μm or less, 1.5μ average binder phase thickness
A cBN sintered body having a standard deviation of 0.9 or less and a standard deviation of 0.9 or less is disclosed. In JP-A-2000-44347,
In a sintered body consisting of 45 to 70% by volume cBN and a binder phase, the binder phase is two-dimensionally continuous and the average particle size of the cBN particles is
A cBN sintered body having a thickness of 0.01 to 2 μm or less, an average binder phase thickness of 1.0 μm or less, and a standard deviation of 0.7 or less is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】焼結金属の加工におい
てcBN基焼結体であっても耐摩耗性が劣る原因は、焼結
体中の結合相が選択的にすきとられることによってcBN
粒子が脱落して摩耗が進行するものであった。そのた
め、特開２０００−１９０１０８号公報で開示されてい
るように、単にcBN粒子の粒径を0.1〜5μmとしても、焼
結金属等の切削加工においては結合相が厚ければ選択的
に摩耗が進行する問題があった。特開２０００−４４３
５０号公報、特開２０００−４４３４７号公報では平均
粒度を一定に制御し、かつ、結合相厚みの平均値を１μ
m以下とすることが開示されているが、焼結金属加工の
ようなすきとり摩耗が進行する切削条件下では、結合相
の選択的な摩耗が進行する問題があった。以上のよう
に、焼結金属等を加工するような過酷な切削条件下でも
すぐれた耐摩耗性、高い加工精度が実現させる切削工具
が求められていた。The reason why the wear resistance is poor even in the case of a cBN-based sintered body in the processing of a sintered metal is that cBN is selectively removed by the binder phase in the sintered body.
The particles dropped off and the wear proceeded. Therefore, as disclosed in Japanese Patent Application Laid-Open No. 2000-190108, even when the particle size of cBN particles is simply set to 0.1 to 5 μm, in the cutting of sintered metal or the like, if the bonding phase is thick, abrasion is selectively caused. There was a problem to progress. JP 2000-443
No. 50, JP-A-2000-44347, the average particle size is controlled to be constant, and the average value of the binder phase thickness is 1 μm.
Although it is disclosed that the thickness is not more than m, there is a problem that the selective abrasion of the binder phase progresses under cutting conditions in which crevice wear advances, such as in sintered metal processing. As described above, there has been a demand for a cutting tool that achieves excellent wear resistance and high processing accuracy even under severe cutting conditions such as processing a sintered metal or the like.
【０００５】[0005]
【課題を解決するための手段】そこで本発明者らは、結
合相のすきとり摩耗を低減させる種々の研究の結果、本
発明が得られたものである。本発明はｃBNを４０〜７０
wt%含有し、残部の結合相が周期律表の４ａ、５ａ、６
ａ族元素、Al、それらの炭化物、窒化物、硼化物および
それら相互固溶体、混合体の少なくとも１種からなる焼
結体において、cBNの粒径が0.01μm以上0.40μm以下で
あって、かつ、結合相厚みの平均値が0.10μm以上0.70
μm以下の超微粒ｃBN基焼結体である。The inventors of the present invention have obtained the present invention as a result of various studies to reduce the abrasion of the binder phase. In the present invention, the cBN is 40 to 70.
wt%, and the remaining binder phase is 4a, 5a, 6 in the periodic table.
Group a element, Al, their carbides, nitrides, borides and their mutual solid solution, in a sintered body consisting of at least one of a mixture, the particle size of cBN is 0.01μm or more and 0.40μm or less, and, The average value of the binder phase thickness is 0.10 μm or more and 0.70
It is an ultrafine cBN-based sintered body of μm or less.
【０００６】cBNの粒径は、0.01μmより細かくては焼結
体中に欠陥が残留しやすくなり、また、0.4μmより大き
くてはcBN粒子のヘキ開による摩耗量が増大するため、
0.01μm以上0.4μm以下と定めた。さらに、結合相厚み
の平均値は、0.10μmより小さくては工具の強度低下を
招き、0.70μmより大きくては所望のすきとり摩耗に対
する耐摩耗性が得られないため、0.10μm以上0.70μm以
下と定めた。When the particle size of cBN is smaller than 0.01 μm, defects tend to remain in the sintered body, and when the particle size is larger than 0.4 μm, the amount of wear of cBN particles due to cleaving increases.
It was defined as 0.01 μm or more and 0.4 μm or less. Furthermore, if the average value of the binder phase thickness is smaller than 0.10 μm, the strength of the tool is reduced, and if it is larger than 0.70 μm, the desired wear resistance to crevice wear cannot be obtained, so 0.10 μm or more and 0.70 μm or less. It was decided.
【０００７】具体的に工具にするには、該超微粒ｃBN基
焼結体または、さらにこの超微粒ｃＢＮ基焼結体が超硬
合金と一体である硬質部材をＡｇ、Ｃｕ、Ｎｉ、Ｍｎ、
Ｐｂ、Ｐｄ、Ｃｄ、Ａｕ、Ｚｎ、Ｓｎ、Ｌｉ、Ｐ、Ｓ
ｉ、Ｃｒ、Ｂ、Ｆｅ、Ｃｏ、Ｖ、Ｔａ、Ｍｏ、Ａｌ、Ｂ
ｅ、Ｇｅのいずれか1種以上からなる金属、さらに必要
によってはＴｉ、Ｚｒ、Ｈｆの一種以上の金属を0.2〜7
0体積％含有した金属によって、超硬合金、ハイス、
鋼、セラミックス、サーメットの少なくとも1種の基材
に接合することにより得られる。またさらに、周期率表
の4a、5a、6a族元素、Alの酸化物、炭化物、窒化物、硼
化物ならびに、それら相互固溶体／混合体の1種以上の
単層または2層以上の硬質膜を被覆した被覆超微粒ｃＢ
Ｎ基焼結体または被覆硬質部材とすることによって適用
切削領域が拡大されるため好ましい。[0007] Specifically, to make a tool, the ultrafine cBN-based sintered body or a hard member in which the ultrafine cBN-based sintered body is integrated with a cemented carbide is made of Ag, Cu, Ni, Mn,
Pb, Pd, Cd, Au, Zn, Sn, Li, P, S
i, Cr, B, Fe, Co, V, Ta, Mo, Al, B
e, a metal composed of at least one of Ge, and, if necessary, a metal composed of at least one of Ti, Zr, and Hf.
Cemented carbide, high-speed steel,
It is obtained by joining to at least one kind of base material of steel, ceramics and cermet. Furthermore, one or more hard layers of one or more of oxides, carbides, nitrides, borides, and their mutual solid solutions / mixtures of Group 4a, 5a, and 6a elements of the periodic table, and Al Coated ultrafine cB
The use of an N-based sintered body or a coated hard member is preferable because the applicable cutting area is enlarged.
【０００８】[0008]
【発明の実施の形態】次に、具体的な実施の形態につい
て説明する。cBN基焼結体は、cBN粒子と結合相が周期律
表の４ａ、５ａ、６ａ族元素、Al、それらの炭化物、窒
化物、硼化物およびそれら相互固溶体、混合体の少なく
とも１種を超高圧かつ高温下で焼結するものであり、具
体的な結合相としては、TiN、TiAl、TiAlN、Al2O3、TiB
2、TiBN、Al-TiN混合体などが挙げられる。焼結体に供
するこれらの原料粉末は0.01〜0.2μmの粉体を用い、超
硬合金製ボールミル中でさらに混合する。Next, specific embodiments will be described. In the cBN-based sintered body, the cBN particles and the binder phase are at least one of the elements of groups 4a, 5a, and 6a of the periodic table, Al, their carbides, nitrides, borides, and their mutual solid solutions, and mixtures thereof, at an ultra-high pressure. And sintering at a high temperature. Specific bonding phases include TiN, TiAl, TiAlN, Al 2 O 3 , TiB
2 , TiBN, Al-TiN mixture and the like. These raw material powders to be used for the sintered body are further mixed in a cemented carbide ball mill using powder of 0.01 to 0.2 μm.
【０００９】得られた粉末は円盤状に加圧成形し、超高
圧プレス装置内に装入して、超高圧下、高温下で一定時
間保持して超微粒cBN基焼結体を得る。印可する圧力
は、一般的なホットプレス焼結での圧力では足りず、cB
N粒子の逆変態を防止するためには3〜９GPaの圧力が必
要である。また、焼結温度は焼結する組成によって調整
するものであるが、1300〜1700℃で行なう。ここで、cB
N粒子の粒径は極めて超高圧下で行なうため粒成長を伴
なわず、ほぼ原料粉末と同等の粒径が保持される。超微
粒cBN基焼結体は他の基材と接合して使用する場合が多
く、予め超硬合金とも一体焼結した硬質部材とすること
によって、接合が容易になると共に信頼性が向上する。The obtained powder is press-formed into a disk shape, charged into an ultra-high pressure press, and kept at an ultra-high pressure and a high temperature for a certain period of time to obtain an ultrafine cBN-based sintered body. The pressure to be applied is not enough for general hot press sintering, and cB
A pressure of 3 to 9 GPa is required to prevent reverse transformation of N particles. Although the sintering temperature is adjusted depending on the composition to be sintered, the sintering is performed at 1300 to 1700 ° C. Where cB
Since the particle size of the N particles is extremely high, the particle size does not accompany the particle growth, and the particle size is substantially the same as that of the raw material powder. In many cases, the ultrafine cBN-based sintered body is used by being joined to another base material. By using a hard member which is integrally sintered with a cemented carbide in advance, the joining is facilitated and the reliability is improved.
【００１０】また接合は、目的に応じてＮｉろう、Ａｇ
ろう、Ａｕろう、黄銅ろう、銅ろうの少なくとも１種を
用いて接合することによって所望の特性を発揮させ、特
に切削工具、耐摩耗部材に適するものである。ここで、
超硬と一体になっている硬質部材では、上述の接合で良
好な接合体が得られるが、超微粒cBN基焼結体は上述の
ろう材によって接合が極めて困難であるため、ろう材の
必須の構成要素として活性金属であるＴｉ、Ｚｒ、Ｈｆ
の1種以上を0.2〜70体積％含有させることによって、強
固な接合体が得られるものである。[0010] In addition, according to the purpose, Ni brazing, Ag
By joining using at least one of brazing, Au brazing, brass brazing and copper brazing, desired properties are exhibited, and it is particularly suitable for cutting tools and wear-resistant members. here,
With a hard member that is integral with the cemented carbide, a good joined body can be obtained by the above-mentioned joining, but since the ultrafine cBN based sintered body is extremely difficult to join with the above-mentioned brazing material, the essential Active metals Ti, Zr, Hf
By containing at least one of the above by 0.2 to 70% by volume, a strong bonded body can be obtained.
【００１１】ここで、活性金属量は0.2体積％以下では
所望の接合強度が得られず、70体積%より多くてはろう
材自体が脆弱になってしまうため、0.2〜70体積％と定
めた。接合強度からは２体積％以上６０体積％以下が好
ましく、30体積％以上60体積％以下がより好ましい。接
合する基材は、本発明の技術分野の用途に適するという
結果から、超硬合金、ハイス、鋼、セラミックス、サー
メットの少なくとも1種と定めた。切削工具としては、
超硬合金が適しており、耐摩耗部材としてはハイス、鋼
が適しており、高精度の摺動部材にはセラミックス、サ
ーメットが適している。Here, if the amount of active metal is less than 0.2% by volume, the desired bonding strength cannot be obtained, and if it is more than 70% by volume, the brazing material itself becomes brittle. . From the viewpoint of bonding strength, the volume is preferably from 2% by volume to 60% by volume, and more preferably from 30% by volume to 60% by volume. The base material to be bonded was determined to be at least one of cemented carbide, high-speed steel, steel, ceramics, and cermet from the result that the base material to be bonded is suitable for use in the technical field of the present invention. As a cutting tool,
Cemented carbide is suitable, high-speed steel and steel are suitable as wear-resistant members, and ceramics and cermets are suitable for high-precision sliding members.
【００１２】さらに、超微粒ｃＢＮ基焼結体、硬質部材
に周期率表の4a、5a、6a族元素、Al、の酸化物、炭化
物、窒化物、硼化物ならびに、それら相互固溶体／混合
体の1種以上の単層または2層以上の硬質膜を被覆するこ
とによって、耐摩耗性、耐凝着性がさらに向上するもの
である。具体的には、化学蒸着法、物理蒸着法等によ
る、ＴｉＮ、ＴｉＣ、ＡｌＣＮ、ＴｉＡｌＮ、ＮｂＣ、
ＺｒＳｉＢＮ、ＴａＮ、ＴｉＢ2、Ａｌ2Ｏ3およびこれ
らの積層などの硬質膜が挙げられる。Further, the ultrafine cBN-based sintered body and the hard member may include oxides, carbides, nitrides, borides of the elements of groups 4a, 5a and 6a of the periodic table, Al, and mixtures of these solid solutions / mixtures. Abrasion resistance and adhesion resistance are further improved by coating at least one kind of single layer or at least two layers of hard films. Specifically, TiN, TiC, AlCN, TiAlN, NbC,
Hard films such as ZrSiBN, TaN, TiB 2 , Al 2 O 3, and laminations thereof are included.
【００１３】[0013]
【実施試験１】原料粉末として所定の粒径のcBN粉末
と、平均粒径0.2μmのTiN−Al金属間化合物を体積比で
6:4となるように秤量し、超硬合金製ボールミルで湿式
混合した。さらに乾燥して得られた粉体を、金型中で円
盤状に加圧成形した。その成形体を超高圧プレス装置に
装入し、5GPa、1500℃の焼結条件で30分保持して各試料
を得た。各試料は研摩して、cBN粒径、結合層厚さ、組
識の均一性の確認、ヌープ硬度測定を行なった。[Experimental Test 1] As raw material powder, a volume ratio of cBN powder having a predetermined particle size and TiN-Al intermetallic compound having an average particle size of 0.2 μm was used.
6: 4 was weighed and wet mixed with a cemented carbide ball mill. The powder obtained by further drying was press-formed into a disk shape in a mold. The compact was charged into an ultra-high pressure press, and kept under sintering conditions of 5 GPa and 1500 ° C. for 30 minutes to obtain each sample. Each sample was polished and checked for cBN particle size, bonding layer thickness, tissue uniformity, and Knoop hardness measurement.
【００１４】[0014]
【表１】 得られた焼結体は超硬合金基材に銀ロウ（45Ag−30Cu−
25Zn）を介して接合し、工具形状に研摩加工して切削試
験により評価した。切削試験結果を表２に示す。[Table 1] The obtained sintered body is made of silver brazing (45Ag-30Cu-
25Zn), ground to a tool shape, and evaluated by a cutting test. Table 2 shows the cutting test results.
【００１５】切削試験条件： 被削材 ：バルブシート用焼結合金 2Cu−0.5Mo−1.2C−
bal Fe （HB９０） 工具形状：トラバース用バイト 切削速度：90m/min 送り ：0.1mm/rev 切り込み：0.15mm 切削液 ：水溶性 被削材を５０００個加工後の逃げ面摩耗量で比較評価を
行なった。Cutting test conditions: Work material: Sintered alloy for valve seat 2Cu-0.5Mo-1.2C-
bal Fe (H B 90) Tool shape: Traverse byte Cutting speed: 90m / min Feed: 0.1 mm / rev cut: 0.15 mm Cutting fluid: comparative evaluation of water-soluble workpiece in flank wear amount after 5000 working Was performed.
【００１６】[0016]
【表２】 切削試験結果 [Table 2] Cutting test results
【００１７】[0017]
【実地試験２】発明品１を基材として、アークイオンプ
レーティング法によって、TiNを1.5μm、TiAlNを1.5μm
被覆し、発明品４、５とした。さらに以下の切削試験に
より評価した。 切削試験条件： 被削材 ：バルブシート用焼結合金 2Cu−0.5Mo−1.4C−
bal Fe （HB９１） 工具形状：トラバース用バイト 切削速度：70m/min 送り ：0.14mm/rev 切り込み：0.15mm 切削液 ：水溶性 被削材を５０００個加工後の逃げ面摩耗量で比較評価を
行なった。[Practical test 2] Using the invention product 1 as a base material, TiN 1.5 μm and TiAlN 1.5 μm by arc ion plating.
It covered and it was set as invention goods 4 and 5. Furthermore, evaluation was made by the following cutting test. Cutting test conditions: Work material: Sintered alloy for valve seat 2Cu-0.5Mo-1.4C-
bal Fe (H B 91) Tool shape: Traverse byte Cutting speed: 70m / min Feed: 0.14 mm / rev cut: 0.15 mm Cutting fluid: comparative evaluation of water-soluble workpiece in flank wear amount after 5000 working Was performed.
【００１８】[0018]
【表３】 切削試験結果２ [Table 3] Cutting test result 2
【００１９】[0019]
【発明の効果】実施例からも明らかなように、本発明品
は極めて苛酷な焼結合金の加工において優れた耐摩耗性
を示した。一方、従来のcBN基焼結体に相当する発明品
は、耐摩耗性が劣ると共に欠損に至ることが明らかとな
った。As is clear from the examples, the products of the present invention exhibited excellent wear resistance in the processing of extremely severe sintered alloys. On the other hand, it was clarified that the invention product corresponding to the conventional cBN-based sintered body had poor wear resistance and resulted in fracture.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 37/02 Ｃ０４Ｂ 41/87 Ｆ 41/87 Ｎ Ｃ２２Ｃ 1/05 Ｆ Ｃ２２Ｃ 1/05 Ｍ Ｂ２３Ｂ 27/14 Ｂ // Ｂ２３Ｂ 27/14 27/18 27/18 27/20 27/20 Ｃ０４Ｂ 35/58 １０３Ｈ Ｆターム(参考） 3C046 FF03 FF11 FF13 FF32 FF35 HH04 4G001 BA24 BA34 BA36 BA37 BA43 BB24 BB34 BB36 BB37 BB43 BC13 BC72 BD18 BE22 BE31 4G026 BA18 BB21 BB24 BB31 BF11 BF16 BF24 BH13 4K018 AD14 AD15 BA03 BA08 BA09 BA11 BA20 BB04 DA11 FA24 JA12 JA14 JA16 JA34 JA38 KA02 KA14 KA15 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) C04B 37/02 C04B 41/87 F41 / 87 NC22C 1/05 F C22C 1/05 MB23B 27/14 B // B23B 27/14 27/18 27/18 27/20 27/20 C04B 35/58 103H F term (reference) 3C046 FF03 FF11 FF13 FF32 FF35 HH04 4G001 BA24 BA34 BA36 BA37 BA43 BB24 BB34 BB36 BB37 BB43 BC13 BC72 BD18 BE22 BE31 4G0 BA18 BB21 BB24 BB31 BF11 BF16 BF24 BH13 4K018 AD14 AD15 BA03 BA08 BA09 BA11 BA20 BB04 DA11 FA24 JA12 JA14 JA16 JA34 JA38 KA02 KA14 KA15
Claims (10)
相が周期律表の４ａ、５ａ、６ａ族元素、Al、それらの
炭化物、窒化物、硼化物およびそれら相互固溶体、混合
体の少なくとも１種からなる焼結体において、cBNの粒
径が0.01μm以上0.40μm以下であって、かつ、結合相厚
みの平均値が0.10μm以上0.70μm以下であることを特徴
とする超微粒ｃBN基焼結体The present invention comprises 40 to 70% by weight of cBN, and the remaining binder phase is composed of elements of groups 4a, 5a and 6a of the periodic table, Al, their carbides, nitrides, borides and their mutual solid solutions and mixtures. In a sintered body comprising at least one kind, an ultrafine cBN having a particle size of cBN of 0.01 μm or more and 0.40 μm or less, and an average value of a binder phase thickness of 0.10 μm or more and 0.70 μm or less. Base sintered body
硬合金と一体であることを特徴とする硬質部材2. A hard member wherein the ultrafine cBN-based sintered body according to claim 1 is integrated with a cemented carbide.
ｂ、Ｐｄ、Ｃｄ、Ａｕ、Ｚｎ、Ｓｎ、Ｌｉ、Ｐ、Ｓｉ、
Ｃｒ、Ｂ、Ｆｅ、Ｃｏ、Ｖ、Ｔａ、Ｍｏ、Ａｌ、Ｂｅ、
Ｇｅのいずれか1種以上からなる金属によって基材に接
合されたことを特徴とする請求項１に記載の超微粒ｃBN
基焼結体3. The hard member is made of Ag, Cu, Ni, Mn, P
b, Pd, Cd, Au, Zn, Sn, Li, P, Si,
Cr, B, Fe, Co, V, Ta, Mo, Al, Be,
The ultrafine cBN according to claim 1, wherein the ultrafine cBN is bonded to the substrate by a metal comprising at least one of Ge.
Base sintered body
ｂ、Ｐｄ、Ｃｄ、Ａｕ、Ｚｎ、Ｓｎ、Ｌｉ、Ｐ、Ｓｉ、
Ｃｒ、Ｂ、Ｆｅ、Ｃｏ、Ｖ、Ｔａ、Ｍｏ、Ａｌ、Ｂｅ、
Ｇｅのいずれか1種以上からなる金属によって基材に接
合されたことを特徴とする請求項２に記載の硬質部材4. The hard member is made of Ag, Cu, Ni, Mn, P
b, Pd, Cd, Au, Zn, Sn, Li, P, Si,
Cr, B, Fe, Co, V, Ta, Mo, Al, Be,
3. The hard member according to claim 2, wherein the hard member is bonded to the base material by a metal comprising at least one of Ge.
〜70体積％含有して、残部がＡｇ、Ｃｕ、Ｎｉ、Ｍｎ、
Ｐｂ、Ｐｄ、Ｃｄ、Ａｕ、Ｚｎ、Ｓｎ、Ｌｉ、Ｐ、Ｓ
ｉ、Ｃｒ、Ｂ、Ｆｅ、Ｃｏ、Ｖ、Ｔａ、Ｍｏ、Ａｌ、Ｂ
ｅ、Ｇｅのいずれか1種以上からなる金属によって基材
に接合されたことを特徴とする請求項１に記載の超微粒
ｃBN基焼結体5. The method according to claim 1, wherein at least one metal selected from the group consisting of Ti, Zr, and Hf is 0.2% or less.
~ 70% by volume, the balance being Ag, Cu, Ni, Mn,
Pb, Pd, Cd, Au, Zn, Sn, Li, P, S
i, Cr, B, Fe, Co, V, Ta, Mo, Al, B
2. The ultrafine cBN-based sintered body according to claim 1, wherein the sintered body is bonded to a substrate by a metal comprising at least one of e and Ge.
〜70体積％含有して、残部がＡｇ、Ｃｕ、Ｎｉ、Ｍｎ、
Ｐｂ、Ｐｄ、Ｃｄ、Ａｕ、Ｚｎ、Ｓｎ、Ｌｉ、Ｐ、Ｓ
ｉ、Ｃｒ、Ｂ、Ｆｅ、Ｃｏ、Ｖ、Ｔａ、Ｍｏ、Ａｌ、Ｂ
ｅ、Ｇｅのいずれか1種以上からなる金属によって基材
に接合されたことを特徴とする請求項２に記載の硬質部
材6. The method of claim 1 wherein one or more metals of Ti, Zr, Hf
~ 70% by volume, the balance being Ag, Cu, Ni, Mn,
Pb, Pd, Cd, Au, Zn, Sn, Li, P, S
i, Cr, B, Fe, Co, V, Ta, Mo, Al, B
The hard member according to claim 2, wherein the hard member is bonded to the base material by a metal made of at least one of e and Ge.
ックス、サーメットの少なくとも1種であることを特徴
とする請求項３、５いずれか記載の超微粒ｃＢＮ基焼結
体7. The ultrafine cBN-based sintered body according to claim 3, wherein said base material is at least one of cemented carbide, high speed steel, steel, ceramics and cermet.
ックス、サーメットの少なくとも1種であることを特徴
とする請求項４、６いずれか記載の硬質部材8. The hard member according to claim 4, wherein said base material is at least one of cemented carbide, high speed steel, steel, ceramics, and cermet.
物、炭化物、窒化物、硼化物ならびに、それら相互固溶
体／混合体の1種以上の単層または2層以上の硬質膜を被
覆したことを特徴とする請求項１、３、５、７いずれか
記載の被覆超微粒ｃＢＮ基焼結体9. One or more monolayers or two or more layers of the oxides, carbides, nitrides, borides and their mutual solid solutions / mixtures of the Group 4a, 5a and 6a elements of the periodic table. The coated ultrafine cBN-based sintered body according to any one of claims 1, 3, 5, and 7, wherein the film is coated.
物、炭化物、窒化物、硼化物ならびに、それら相互固溶
体／混合体の1種以上の単層または2層以上の硬質膜を被
覆したことを特徴とする請求項２、４、６、８いずれか
記載の被覆硬質部材10. A hard layer of one or more of one or more of oxides, carbides, nitrides, borides of Al group 4a, 5a and 6a of the periodic table, and their mutual solid solutions / mixtures. The coated hard member according to any one of claims 2, 4, 6, and 8, wherein the coated hard member is coated with a film.
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|---|---|---|---|
| JP2001109393A JP2002302732A (en) | 2001-04-09 | 2001-04-09 | Ultrafine grained cubic bn sintered compact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001109393A JP2002302732A (en) | 2001-04-09 | 2001-04-09 | Ultrafine grained cubic bn sintered compact |
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| Publication Number | Publication Date |
|---|---|
| JP2002302732A true JP2002302732A (en) | 2002-10-18 |
Family
ID=18961342
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001109393A Pending JP2002302732A (en) | 2001-04-09 | 2001-04-09 | Ultrafine grained cubic bn sintered compact |
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