JP2008163430A - 高耐食性部材およびその製造方法 - Google Patents
高耐食性部材およびその製造方法 Download PDFInfo
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Abstract
【解決手段】ステンレス鋼製の基材と、基材の表面の少なくとも一部に被覆された中間層と、中間層の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える高耐食性部材は、少なくとも基材の表面の温度が450℃以下の低温で、中間層および非晶質炭素膜が形成されてなる。
表層部が窒化処理されたステンレス鋼製の基材と、基材の表層部の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える高耐食性部材は、少なくとも基材の表面の温度が450℃以下の低温で、窒化処理および非晶質炭素膜の形成が行われてなる。
上記の高耐食性部材は、製造工程において、ステンレス鋼製の基材の表面が、高温(>450℃)に曝されない。そのため、基材の耐食性は、元のステンレス鋼の耐食性と同等に保たれる。
【選択図】なし
Description
前記中間層および前記非晶質炭素膜は、前記基材の表面の温度が450℃以下の低温で形成されることを特徴とする。
前記窒化処理および前記非晶質炭素膜の形成は、前記基材の表面の温度が450℃以下の低温で行われることを特徴とする。
前記中間層の表面の少なくとも一部に、前記基材の表面の温度を450℃以下にして非晶質炭素膜を成膜する非晶質炭素膜成膜工程と、
からなることを特徴とする。
窒化処理された前記表層部の表面の少なくとも一部に、前記基材の表面の温度を450℃以下にして非晶質炭素膜を成膜する非晶質炭素膜成膜工程と、
からなることを特徴とする。
本発明の高耐食性部材は、ステンレス鋼製の基材と、基材の表面の少なくとも一部に被覆された中間層と、中間層の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える(図1)。あるいは、本発明の高耐食性部材は、表層部が窒化処理されたステンレス鋼製の基材と、表層部の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える(図2)。
本発明の高耐食性部材の製造方法は、以上説明した本発明の高耐食性部材の製造方法である。
本実施例では、以下の手順で、基材の外周面にチタン膜(中間層)およびDLC膜を形成して、図4に示すポンプ軸10を作製した。
チタン膜が所望の膜厚に形成されたら、直流電力の供給を停止させた。その後、チャンバー内にテトラメチルシラン(TMS)ガスを導入した。導入されたTMSガスは、電力を供給されたプラズマ源で生成されたプラズマにより分解され解離して、70分の成膜により、基材の外周面にSiを含むDLC膜(DLC−Si膜:膜厚3000nm)が成膜された。<工程II>
なお、イオンボンバード処理の処理温度は300℃、工程Iおよび工程IIでの基材の表面の温度は200℃であった。
本比較例では、以下の手順で、基材を窒化処理した後、DLC膜を形成して、図4に示すポンプ軸10を作製した。
プラズマ窒化処理の終了後、窒素ガスの供給を停止し、チャンバー内にTMSガスおよび水素ガスを供給した。50分の成膜により、基材の外周面には、Siを含むDLC膜(DLC−Si膜:膜厚3000nm)が成膜された。<工程II>
[比較例2]
本比較例では、基材に中間層、DLC膜の形成、窒化処理を行わなかった。すなわち、駆動軸は、未処理の基材である。
実施例および比較例の駆動軸の耐食性を評価するために、腐食試験を行った。腐食試験は、作製したポンプ軸10(駆動軸)と軸受メタル20および30からなるウォータポンプの軸受構造部を80℃の水中に24時間放置し、その後の腐食の有無を目視で観察して行った。
20,30:軸受メタル(軸受)
21,31:ジャーナル軸受部
22 :スラスト軸受部
Claims (17)
- ステンレス鋼製の基材と、該基材の表面の少なくとも一部に被覆された中間層と、該中間層の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える高耐食性部材であって、
前記中間層および前記非晶質炭素膜は、前記基材の表面の温度が450℃以下の低温で形成されることを特徴とする高耐食性部材。 - 表層部が窒化処理されたステンレス鋼製の基材と、該表層部の表面の少なくとも一部に被覆された非晶質炭素膜と、を備える高耐食性部材であって、
前記窒化処理および前記非晶質炭素膜の形成は、前記基材の表面の温度が450℃以下の低温で行われることを特徴とする高耐食性部材。 - 水を含む液体の存在下において使用され、前記非晶質炭素膜の表面が相手材と摺接する摺動部品である請求項1または2記載の高耐食性部材。
- 前記液体は、水で希釈されたクーラントである請求項3記載の高耐食性部材。
- 前記摺動部品は、駆動軸および/または軸受である請求項3記載の高耐食性部材。
- 前記駆動軸および前記軸受は、前記液体を輸送するウォータポンプの軸受構造部である請求項5記載の高耐食性部材。
- 前記中間層は、クロム(Cr)膜、チタン(Ti)膜、ケイ素(Si)膜、タングステン(W)膜またはCr、Ti、SiおよびWのうちの少なくとも1種を含む炭化物膜、窒化物膜または炭窒化物膜である請求項1記載の高耐食性部材。
- ステンレス鋼製の基材の表面の少なくとも一部に、該基材の表面の温度を450℃以下にして中間層を形成する中間層形成工程と、
前記中間層の表面の少なくとも一部に、前記基材の表面の温度を450℃以下にして非晶質炭素膜を成膜する非晶質炭素膜成膜工程と、
からなることを特徴とする高耐食性部材の製造方法。 - ステンレス鋼製の基材の表層部を該基材の表面の温度を450℃以下にして窒化処理する低温窒化処理工程と、
窒化処理された前記表層部の表面の少なくとも一部に、前記基材の表面の温度を450℃以下にして非晶質炭素膜を成膜する非晶質炭素膜成膜工程と、
からなることを特徴とする高耐食性部材の製造方法。 - 前記中間層形成工程は、物理蒸着法により前記中間層を形成する工程である請求項8記載の高耐食性部材の製造方法。
- 前記低温窒化処理工程は、イオン注入によるイオン窒化法またはアンモニア水を用いた液体窒化法により窒化処理を行う工程である請求項9記載の高耐食性部材の製造方法。
- 前記非晶質炭素膜成膜工程は、物理蒸着法により前記非晶質炭素膜を成膜する工程である請求項8または9記載の高耐食性部材の製造方法。
- 前記高耐食性部材は、水を含む液体の存在下において使用され、前記非晶質炭素膜の表面が相手材と摺接する摺動部品である請求項8または9記載の高耐食性部材の製造方法。
- 前記液体は、水で希釈されたクーラントである請求項13記載の高耐食性部材の製造方法。
- 前記摺動部品は、駆動軸および/または軸受である請求項13記載の高耐食性部材の製造方法。
- 前記駆動軸および前記軸受は、前記液体を輸送するウォータポンプの軸受構造部である請求項15記載の高耐食性部材の製造方法。
- 前記中間層は、クロム(Cr)膜、チタン(Ti)膜、ケイ素(Si)膜、タングステン(W)膜またはCr、Ti、SiおよびWのうちの少なくとも1種を含む炭化物膜、窒化物膜または炭窒化物膜である請求項8記載の高耐食性部材の製造方法。
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| US11708859B2 (en) | 2021-12-15 | 2023-07-25 | Schaeffler Technologies AG & Co. KG | Bearing element having polymeric coating and method of application of polymeric coating to bearing element for electrical insulation |
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| JP2010031327A (ja) * | 2008-07-30 | 2010-02-12 | Toyota Central R&D Labs Inc | 硬質非晶質炭素被覆部材およびその製造方法 |
| WO2010035516A1 (ja) * | 2008-09-26 | 2010-04-01 | 日本碍子株式会社 | 成膜装置 |
| JP2010077942A (ja) * | 2008-09-29 | 2010-04-08 | Toyota Central R&D Labs Inc | 流体ポンプ |
| JP2010156026A (ja) * | 2008-12-29 | 2010-07-15 | Sumitomo Electric Ind Ltd | 硬質炭素膜およびその形成方法 |
| JP5682560B2 (ja) * | 2009-07-15 | 2015-03-11 | 日立金属株式会社 | 皮膜密着性に優れた表面被覆摺動部品およびその製造方法 |
| WO2011007770A1 (ja) * | 2009-07-15 | 2011-01-20 | 日立ツール株式会社 | 皮膜密着性に優れた表面被覆摺動部品およびその製造方法 |
| CN102471845A (zh) * | 2009-07-15 | 2012-05-23 | 日立工具股份有限公司 | 具有出色的涂层附着性的表面涂覆滑动部件及其制造方法 |
| JP2011026660A (ja) * | 2009-07-24 | 2011-02-10 | Jtekt Corp | 摺動部材およびその製造方法 |
| WO2012118036A1 (ja) * | 2011-02-28 | 2012-09-07 | 日本ピストンリング株式会社 | ピストンリング |
| JPWO2012118036A1 (ja) * | 2011-02-28 | 2014-07-07 | 日本ピストンリング株式会社 | ピストンリング |
| US9506138B2 (en) | 2011-02-28 | 2016-11-29 | Nippon Piston Ring Co., Ltd. | Piston ring |
| JP2014211190A (ja) * | 2013-04-18 | 2014-11-13 | 日本アイ・ティ・エフ株式会社 | ボールジョイントとその製造方法 |
| WO2014171199A1 (ja) * | 2013-04-18 | 2014-10-23 | 日本アイ・ティ・エフ株式会社 | ボールジョイントとその製造方法 |
| US9765810B2 (en) | 2013-04-18 | 2017-09-19 | Honda Motor Co., Ltd. | Ball joint and method for manufacturing same |
| JP2017044308A (ja) * | 2015-08-28 | 2017-03-02 | 株式会社クボタ | 摺動部材およびポンプ |
| KR20210019538A (ko) * | 2018-06-18 | 2021-02-22 | 이드러메까니끄 에 프러뜨망 | 크로뮴, 탄소 및 규소를 포함하는 언더코트 상의 비-수소화 무정형 탄소 코팅으로 코팅된 부품 |
| KR20210019553A (ko) * | 2018-06-18 | 2021-02-22 | 이드러메까니끄 에 프러뜨망 | 크로뮴, 탄소 및 규소를 포함하는 언더코트 상의 수소화 무정형 탄소 코팅으로 코팅된 부품 |
| KR102520524B1 (ko) * | 2018-06-18 | 2023-04-12 | 이드러메까니끄 에 프러뜨망 | 크로뮴, 탄소 및 규소를 포함하는 언더코트 상의 비-수소화 무정형 탄소 코팅으로 코팅된 부품 |
| US11732343B2 (en) | 2018-06-18 | 2023-08-22 | Hydromecanique Et Frottement | Part coated with a non-hydrogenated amorphous carbon coating on an undercoat comprising chromium, carbon and silicon |
| KR102737482B1 (ko) | 2018-06-18 | 2024-12-04 | 이드러메까니끄 에 프러뜨망 | 크로뮴, 탄소 및 규소를 포함하는 언더코트 상의 수소화 무정형 탄소 코팅으로 코팅된 부품 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101578389A (zh) | 2009-11-11 |
| US20100314005A1 (en) | 2010-12-16 |
| WO2008081650A1 (ja) | 2008-07-10 |
| EP2103711A4 (en) | 2011-07-20 |
| EP2103711A1 (en) | 2009-09-23 |
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