JPS6338565A - Method for reinforcing ceramic film - Google Patents
Method for reinforcing ceramic filmInfo
- Publication number
- JPS6338565A JPS6338565A JP18198886A JP18198886A JPS6338565A JP S6338565 A JPS6338565 A JP S6338565A JP 18198886 A JP18198886 A JP 18198886A JP 18198886 A JP18198886 A JP 18198886A JP S6338565 A JPS6338565 A JP S6338565A
- Authority
- JP
- Japan
- Prior art keywords
- film
- ceramic
- ceramic coating
- cracks
- cooled
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 4
- 230000003014 reinforcing effect Effects 0.000 title 1
- 238000005524 ceramic coating Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000007751 thermal spraying Methods 0.000 abstract description 3
- 238000004299 exfoliation Methods 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000007750 plasma spraying Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- XEYLAWVXYZUVDD-UHFFFAOYSA-N 2-hydroxy-5-(2-methylprop-2-enoylamino)benzoic acid Chemical compound CC(=C)C(=O)NC1=CC=C(O)C(C(O)=O)=C1 XEYLAWVXYZUVDD-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はセラミックス被膜の強化方法、特に熱疲労特
性の改善に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for strengthening ceramic coatings, particularly to improving thermal fatigue properties.
金属材例えば鋼板表面にプラズマ溶射によシジルコニア
被膜（Ｚｒ Ｏ！−２０％ＹｔＯｓ）等のセラミックス
被膜を形成したセラミックス被覆材は、均一な結晶構造
で鋼板−表面に被膜が形成されるため鋼板表面を高機能
化すると′共に、セラミックスの熱伝導率が小さいこと
から断熱材としての利用が図られている。Ceramic coating materials, in which a ceramic coating such as a sizirconia coating (ZrO!-20% YtOs) is formed on the surface of a metal material, such as a steel plate, by plasma spraying have a uniform crystal structure and the coating is formed on the surface of the steel plate. In addition to improving the functionality of the surface, ceramics are being used as heat insulating materials because of their low thermal conductivity.
上記セラミックス被覆材を断熱材として使用した場合、
均一な結晶構造で形成されたセラミックス被膜は加熱・
冷却の繰返しによる膨張・収縮によシ鋼板表面からセラ
ミックス被膜全体が剥離してしまう゛という問題点があ
った。When the above ceramic coating material is used as a heat insulating material,
Ceramic coatings formed with a uniform crystal structure can be heated and
There was a problem in that the entire ceramic coating peeled off from the surface of the steel sheet due to expansion and contraction due to repeated cooling.
この発明はかかる問題点を解決するためになされたもの
であシ、セラミックス被膜の熱疲労特性の改善を図った
セラミックス被膜の強化方法を提案することを目的とす
るものである。The present invention was made to solve these problems, and it is an object of the present invention to propose a method for strengthening a ceramic coating that improves the thermal fatigue characteristics of the ceramic coating.
この発明においては、金属材表面に溶射して形成したセ
ラミックス被膜表面にレーザ光を照射した後、セラミッ
クス被覆材を冷却してセラミックス被膜表面を分割する
一クラックを形成することを特徴とする。This invention is characterized in that after irradiating the surface of a ceramic coating formed by thermal spraying on the surface of a metal material with a laser beam, the ceramic coating material is cooled to form a crack that divides the surface of the ceramic coating.
この発明においては、セラミックス被膜表面を分割する
クラックが熱ｓ掌に対する緩衝となるため、金属材表面
からのセラミックス被膜の剥離を防止する。In this invention, the cracks that divide the surface of the ceramic coating act as a buffer against heat waves, thereby preventing the ceramic coating from peeling off from the surface of the metal material.
第１図は、この発明の一実施例を示す説明図であり、回
圧おいて１はセラミックス被膜板であフ、セラミックス
被膜板１は鋼板２と、鋼板２０表面に７’５ズマ溶１に
ょシ形成したセラミックス被膜３とからなる。４はセラ
ミックス被膜３の表面に照射するレーザ光、５はセラミ
ックス被膜３の表面と平行に移動可能な集光系に設けら
れた集光レンズであシ、集光レンズ５の焦点位置はセラ
ミックス被膜３の表面よシずらして調整しである。FIG. 1 is an explanatory diagram showing an embodiment of the present invention. In terms of rotation pressure, 1 is a ceramic coated plate, and the ceramic coated plate 1 is connected to a steel plate 2, and a 7'5 It consists of a ceramic coating 3 formed on the surface. 4 is a laser beam irradiated onto the surface of the ceramic coating 3; 5 is a condensing lens provided in a condensing system that can move parallel to the surface of the ceramic coating 3; the focal position of the condensing lens 5 is set on the ceramic coating 3; Adjust by shifting it from the surface of 3.
上記の４成によりセラミックス被膜３を強化するには、
まず鋼板２表面にプラズマ溶゛射にょシ均一な結晶１造
のセラミックス破膜３を形成する。To strengthen the ceramic coating 3 by the above four components,
First, a broken ceramic film 3 made of uniform crystals is formed on the surface of a steel plate 2 by plasma spraying.
次に集光レンズ５を有する集光系をセラミックス破膜３
の表面と平行に移動しながら、シールドガス中でセラミ
ックス被膜３０表面金面にレーザ光４を照射し、その後
セラミックス被覆板１を冷却する。Next, the condensing system having the condensing lens 5 is connected to the ceramic broken membrane 3.
The laser beam 4 is irradiated onto the gold surface of the ceramic coating 30 in a shielding gas while moving parallel to the surface of the ceramic coating plate 1, and then the ceramic coating plate 1 is cooled.
上記のように表面をレーザ光４で照射したセラミックス
被膜３はレーザ光４の高エネルギ密度によシ表面が短時
間で高温となシ、かつセラミックスの熱伝導率が小さい
ことから、被膜厚さ方向に大きな温度勾配を生じる。し
たがって、この状態でセラミックス被覆板１を冷却する
と、冷却時にセラミックス被膜３０表面に引張応力が作
用し、セラミックス被膜３の表面に第２図に示すように
多数のクラック６を生じ、セラミックス被膜３０表面を
分割する。The ceramic coating 3 whose surface is irradiated with the laser beam 4 as described above becomes hot in a short period of time due to the high energy density of the laser beam 4, and since the thermal conductivity of ceramics is low, the coating thickness is This produces a large temperature gradient in the direction. Therefore, when the ceramic coated plate 1 is cooled in this state, tensile stress acts on the surface of the ceramic coat 30 during cooling, and a large number of cracks 6 are generated on the surface of the ceramic coat 3 as shown in FIG. Divide.
このセラミックス被膜３に形成されたクラック６が熱衝
撃に対する緩衝となって、セラミックス被膜板１の加熱
・冷却を繰シ返しても、鋼板２がらセラミックス被膜３
の剥離を防止し、耐熱疲労特性の改善を図ることができ
る。The cracks 6 formed in the ceramic coating 3 serve as a buffer against thermal shock, and even if the ceramic coating plate 1 is repeatedly heated and cooled, the ceramic coating 3 remains intact even when the steel plate 2 is heated.
It is possible to prevent peeling and improve thermal fatigue resistance.
以下、この実施例を具体例に基づいて説明する。This embodiment will be described below based on a specific example.
まず、ステンレス鋼板（５ＵＳ３０４）の表面に常圧プ
ラズマ溶射によシ膜厚２５０μｍのＴｉＮ被膜を形成す
る。First, a TiN film with a thickness of 250 μm is formed on the surface of a stainless steel plate (5US304) by atmospheric plasma spraying.
プラズマ溶射は出力４０ ｋｗで、鋼板とトーチ間の距
離を１００ｍとし、プラズマガスとしてアルゴンガスと
窒素ガスを用いＴｉＮ被膜を形成した。Plasma spraying had an output of 40 kW, a distance between the steel plate and the torch was 100 m, and a TiN film was formed using argon gas and nitrogen gas as plasma gas.
次に窒素雰囲気ガスのもとで、焦点距離３８［１ｍ。Next, under a nitrogen atmosphere gas, the focal length was 38 [1 m].
焦点位置がＴｉＮ被膜表面よシ８０謹先になるように調
整した集光系によシ、出力５００ＷのＣＯ，レーザ（λ
＝１０．６μｒＩＬ）を照射速度２５ ｃｍ／−７−で
ＴｉＮ被膜表面に照射し、空冷したのちＴｉＮ被膜の熱
衝撃試験を行なった。A CO laser with an output of 500 W (λ
= 10.6 μrIL) was irradiated onto the surface of the TiN film at an irradiation rate of 25 cm/-7-, and after cooling in air, the TiN film was subjected to a thermal shock test.
熱衝撃試験は約１４００℃のガスを音速でＴｉＮ被膜表
面に３０秒間吹き付け、その後１分間室温にて放置する
ことｅ％ｌｌ返し行ない、ステンレス鋼板からＴｉＮ被
膜が剥離する状態を調べた。なお、ステンレス鋼板にＴ
ｉＮ被膜を形成したままの状態でも調べ、この実施例の
場合と比較した。In the thermal shock test, gas at about 1400° C. was sprayed at the speed of sound onto the surface of the TiN coating for 30 seconds, and then left at room temperature for 1 minute, followed by repeated cycles to examine the state in which the TiN coating peeled off from the stainless steel plate. In addition, T is attached to the stainless steel plate.
The state in which the iN film was formed was also investigated and compared with the case of this example.
この結果、ステンレス鋼板にＴｉＮ被膜を形成したまま
の状態では５５回でステンレス鋼板からＴｉＮ被膜の剥
離が生じたが、上記具体例の場合は約４５００回でＴｉ
Ｎ被膜の剥離が生じ、ＴｉＮ被膜の耐熱疲労特性の大巾
な改善が図られた。As a result, when the TiN coating was still formed on the stainless steel plate, the TiN coating peeled off from the stainless steel plate after 55 cycles, but in the case of the above specific example, the TiN coating peeled off after about 4500 cycles.
The N coating was peeled off, and the thermal fatigue resistance of the TiN coating was significantly improved.
この発明は以上説明したように、金属材に被覆したセラ
ミックス被膜表面形成したクラックにより、セラミック
ス被膜の熱衝撃による膨張・収縮を吸収するようにした
から、セラミックス被膜の耐熱疲労特性を大巾に改善す
ることができる効果を有する。As explained above, in this invention, the cracks formed on the surface of the ceramic coating coated on a metal material absorb the expansion and contraction of the ceramic coating due to thermal shock, thereby greatly improving the thermal fatigue resistance properties of the ceramic coating. It has the effect of being able to.
また、セラミックス被膜の耐熱疲労特性の向上から、任
意の形状のセラミックス被覆材例えば管材を断熱材とし
て使用することができる効果も有する。Furthermore, due to the improved thermal fatigue resistance of the ceramic coating, a ceramic coating material of any shape, such as a tube material, can be used as a heat insulating material.
第１図は、この発明の実施例を示す説明図、第２図は上
記実施例によシ形成したセラミックス被覆材の説明図で
ある。
１・・・セラミックス被覆材、２・・・鋼板、３・・・
セラミックス被膜、４・・・レーザ光、６・・・クラッ
ク。
代理人 弁理士 佐 ５ 正 年
ｉ −ｔ “”７ ミミ７７ス４４ し；；シ（。
２；釧 板
３： ｔ７ぐツクス着焚ｙ４典
４： レーデ光
６二 ７．７・ン ７FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a ceramic coating material formed according to the above embodiment. 1... Ceramic coating material, 2... Steel plate, 3...
Ceramic coating, 4...Laser light, 6...Crack. Agent Patent Attorney Sa 5 Masa ni -t “”7 Mimi77s44 し;;shi(. 2; Sen board 3: t7gutsukusuki y4den 4: Rede Hikari 62 7.7・n 7
Claims (1)
ミックス被膜を形成したセラミックス被覆材において、 上記セラミックス被膜表面にレーザ光を照射した後、上
記セラミックス被覆材を冷却しセラミックス被膜表面を
分割するクラックを形成することを特徴とするセラミッ
クス被膜の強化方法。[Claims] In a ceramic coating material in which a ceramic coating is formed by thermally spraying ceramics on the surface of a substrate made of a metal material, the ceramic coating surface is irradiated with a laser beam, and then the ceramic coating material is cooled to form a ceramic coating surface. A method for strengthening a ceramic film, characterized by forming splitting cracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18198886A JPS6338565A (en) | 1986-08-04 | 1986-08-04 | Method for reinforcing ceramic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18198886A JPS6338565A (en) | 1986-08-04 | 1986-08-04 | Method for reinforcing ceramic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6338565A true JPS6338565A (en) | 1988-02-19 |
Family
ID=16110360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18198886A Pending JPS6338565A (en) | 1986-08-04 | 1986-08-04 | Method for reinforcing ceramic film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338565A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387379A (en) * | 1989-08-30 | 1991-04-12 | Hitachi Ltd | Ground device provided with environment isolating heat-resistant wall |
| JPH03153875A (en) * | 1989-11-09 | 1991-07-01 | Nippon Steel Corp | Surface coated cemented carbide cutting tool having excellent wear resistance and chipping resistance |
| JPH04266087A (en) * | 1991-02-21 | 1992-09-22 | Matsushita Electric Works Ltd | Metal substrate with insulating layer and manufacture thereof |
| JPH05287385A (en) * | 1992-04-07 | 1993-11-02 | Fuji Denshi Kogyo Kk | Method for induction hardening of crank shaft for four-cylindered engine |
| JPH07246483A (en) * | 1994-03-09 | 1995-09-26 | Toshiba Corp | Laser peening method |
| JPH11158599A (en) * | 1997-10-02 | 1999-06-15 | Mtu Motoren & Turbinen Union Muenchen Gmbh | Heat insulating layer and its production |
| WO2002103074A1 (en) * | 2001-06-15 | 2002-12-27 | Mitsubishi Heavy Industries, Ltd. | Thermal barrier coating material and method for production thereof, gas turbine member using the thermal barrier coating material, and gas turbine |
| JP2008536050A (en) * | 2005-04-14 | 2008-09-04 | シーメンス アクチエンゲゼルシヤフト | Steam turbine equipment components, steam turbine equipment, and utilization and manufacturing methods of steam turbine equipment components |
| EP1985723A3 (en) * | 2007-04-25 | 2011-04-27 | United Technologies Corporation | Method for improved ceramic coating |
| EP3071722B1 (en) | 2013-11-19 | 2018-08-29 | Safran Aircraft Engines | Integrated sintering process for microcracking and erosion resistance of thermal barriers |
| CN109609886A (en) * | 2019-01-17 | 2019-04-12 | 北京矿冶科技集团有限公司 | A kind of process improving resisting corrosion of molten zinc coating life |
-
1986
- 1986-08-04 JP JP18198886A patent/JPS6338565A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0387379A (en) * | 1989-08-30 | 1991-04-12 | Hitachi Ltd | Ground device provided with environment isolating heat-resistant wall |
| JPH03153875A (en) * | 1989-11-09 | 1991-07-01 | Nippon Steel Corp | Surface coated cemented carbide cutting tool having excellent wear resistance and chipping resistance |
| JPH076066B2 (en) * | 1989-11-09 | 1995-01-25 | 新日本製鐵株式会社 | Surface coated cemented carbide cutting tool with excellent wear resistance and fracture resistance |
| JPH04266087A (en) * | 1991-02-21 | 1992-09-22 | Matsushita Electric Works Ltd | Metal substrate with insulating layer and manufacture thereof |
| JPH05287385A (en) * | 1992-04-07 | 1993-11-02 | Fuji Denshi Kogyo Kk | Method for induction hardening of crank shaft for four-cylindered engine |
| JPH07246483A (en) * | 1994-03-09 | 1995-09-26 | Toshiba Corp | Laser peening method |
| JPH11158599A (en) * | 1997-10-02 | 1999-06-15 | Mtu Motoren & Turbinen Union Muenchen Gmbh | Heat insulating layer and its production |
| WO2002103074A1 (en) * | 2001-06-15 | 2002-12-27 | Mitsubishi Heavy Industries, Ltd. | Thermal barrier coating material and method for production thereof, gas turbine member using the thermal barrier coating material, and gas turbine |
| US7655326B2 (en) | 2001-06-15 | 2010-02-02 | Mitsubishi Heavy Industries, Ltd. | Thermal barrier coating material and method for production thereof, gas turbine member using the thermal barrier coating material, and gas turbine |
| JP2008536050A (en) * | 2005-04-14 | 2008-09-04 | シーメンス アクチエンゲゼルシヤフト | Steam turbine equipment components, steam turbine equipment, and utilization and manufacturing methods of steam turbine equipment components |
| US8137063B2 (en) | 2005-04-14 | 2012-03-20 | Siemens Aktiengesellschaft | Component of a steam turbine plant, steam turbine plant, application, and production method |
| EP1985723A3 (en) * | 2007-04-25 | 2011-04-27 | United Technologies Corporation | Method for improved ceramic coating |
| EP3071722B1 (en) | 2013-11-19 | 2018-08-29 | Safran Aircraft Engines | Integrated sintering process for microcracking and erosion resistance of thermal barriers |
| CN109609886A (en) * | 2019-01-17 | 2019-04-12 | 北京矿冶科技集团有限公司 | A kind of process improving resisting corrosion of molten zinc coating life |
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