JP2015518522A - 高められたコーティング特性を有するSiを用いたアーク堆積Al−Cr−Oコーティング - Google Patents
高められたコーティング特性を有するSiを用いたアーク堆積Al−Cr−Oコーティング Download PDFInfo
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Abstract
Description
結晶Al−Cr−Oコーティングは、その優れた特性から、非常に有望なものである。これは、主にコランダム構造を有する、またはコランダム構造を含む固溶体の結晶(Al,Cr)2O3コーティングを作るのに特に望ましい。なぜなら、この種の結晶構造に関連する良好な化学的特性、機械的特性、およびトライボロジー特性を有しているためである。反応性陰極アーク蒸発によって酸素を含む環境において蒸発するAl−Cr合金ターゲットから(Al,Cr)2O3層を作る堆積法が、Rammらによって米国特許出願公開第US20070000772号A1において提案されている。
しかしながら、Rammらは、Surface & Coatings Technology 205 (2010) 1356-1361「反応性陰極アーク蒸発によって堆積されたAl−Cr−Oコーティングの合成におけるターゲット表面と層の核生成との相関(Correlation between target surface and layer nucleation in the synthesis of Al-Cr-O coatings deposited by reactive cathodic arc evaporation)」において、純酸素雰囲気におけるAlを含む複合ターゲットの作用には、酸化物を含有する材料が蒸発処理時にターゲット表面で成長するという問題が起こり得ることを報告している。酸素雰囲気に露出したターゲット表面において観察されるこの酸化物材料は、一般に「酸化物島」という。Rammらは、観察される「酸化物島」の成長は、蒸発時にターゲット表面で行われる溶解・急冷処理時にもたらされる余分なアルミニウムの酸化が原因であるとしている。
本発明の目的は、上述のような問題のないAl−Cr−Oコーティングを工業的に合成するためのアーク蒸発PVD法を提供することにある。
上記の問題を解決するために、発明者は、酸化物島の成長への影響を研究することを意図するとともに、ターゲット表面におけるこの酸化物島の成長を防止する、または酸化物島の成長に影響を与える目的で、付加的な要素を含むAl−Cr含有複合ターゲットを使用することを決めた。
中酸素流:約250から500sccm
高酸素流:約800から1000sccm(コーティングチャンバにおいて≧2.3Paまで)
ターゲットをたとえば5原子%のSiでドープすることにより、Al70Cr30ターゲットと比較したAl/Cr比率が2.3から2.8に変化し、ドープされていないターゲットのAl(74)Cr(26)ターゲット組成と同程度となる。事前の調査(Rammらによる2007年の調査)に基づけば、合成された三成分酸化物の金属組成において金属ターゲット組成を再現できると期待され得る。しかし、これは当てはまらない。合成されたコーティングにおけるAl/Cr比率は、両方のターゲット組成については高いAl比率に移行している。表1において、合成されたAl−Cr−OコーティングについてのAl/Cr比率の組成が示される。
この記載は、本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を用いてPVD酸化物コーティングを作る方法を開示しており、方法は、
a)PVDコーティングチャンバを提供するステップと、
b)少なくとも1つのコーティングされる表面を有する基板をこのようなPVDコーティングチャンバに導入するステップと、
c)反応性PVDコーティングを行うステップとを少なくとも備え、処理ガスは、本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を基板表面に堆積させるための少なくとも1つのターゲットから作られる金属イオンと反応する反応性ガスを含み、ステップc)の反応性PVDコーティング処理を行うために使用される1つ以上のターゲットは、原子百分率でAl1−x−yCrxSiy、0.05<y<0.10、0.20≦x≦0.25の式によって与えられる要素組成を有し、反応性ガスは酸素であり、本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を有するコーティングが作られ、酸素が考慮されない場合は、少なくとも1つの層においてシリコン濃度が1つ以上のターゲットのシリコン濃度よりも小さくなる。
一実施形態によれば、処理ガスは本質的に酸素のみを含む。x=0.05およびy=0.25を選ぶことが可能であり、好ましい。
コーティング系は、
−酸化バリヤ、および/または
−化学バリヤ、および/または
−たとえば200℃を超える高温トライボロジー用途のための層への施工、および/または
−燃料電池、および/または
−200℃を超える高温で行われるトライボロジー用途のための固体潤滑剤のために使用することができる。
Claims (14)
- 本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を用いてPVD酸化物コーティングを作る用法であって、方法は、
a)PVDコーティングチャンバを提供するステップと、
b)少なくとも1つのコーティングされる表面を有する基板をこのようなPVDコーティングチャンバに導入するステップと、
c)反応性PVDコーティングを行うステップとを少なくとも備え、処理ガスは、本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を基板表面に堆積させるための少なくとも1つのターゲットから作られる金属イオンと反応する反応性ガスを含み、ステップc)の反応性PVDコーティング処理を行うために使用される1つ以上のターゲットは、原子百分率でAl1−x−yCrxSiy、0.05<y<0.10、0.20≦x≦0.25の式によって与えられる要素組成を有し、反応性ガスは酸素であり、本質的にAl、Cr、Si、およびOから構成される少なくとも1つの層を有するコーティングが作られ、酸素が考慮されない場合は、少なくとも1つの層においてシリコン濃度が1つ以上のターゲットのシリコン濃度よりも小さくなる、方法。 - 前記PVDコーティング処理はアーク蒸発処理である、請求項1に記載の方法。
- 処理ガスは本質的に酸素のみを含む、請求項2に記載の方法。
- x=0.05およびy=0.25である、請求項1から3のうち少なくとも1項に記載の方法。
- 酸素が考慮されない場合は、前記少なくとも1つの層において、シリコン濃度は前記1つ以上のターゲットのシリコン濃度の半分以下となる、請求項1から3のうち少なくとも1項に記載の方法。
- 請求項1から5のうち少なくとも1項に記載の方法によって作られるコーティング系。
- 請求項6に記載のコーティング系でコーティングされる基板。
- 耐食性を向上させるために使用される請求項6に記載のコーティング系。
- 酸化バリヤとして使用される請求項6に記載のコーティング系。
- 化学バリヤとして使用される請求項6に記載のコーティング系。
- 高温トライボロジー用途のための層への施工として使用される請求項6に記載のコーティング系。
- 燃料電池を作るために使用される請求項6に記載のコーティング系。
- 200℃を超える温度で行なわれるトライボロジー用途のための固体潤滑剤として使用される請求項6に記載のコーティング系。
- 請求項8から13のうち少なくとも1項に記載のコーティング系でコーティングされた基板。
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PCT/EP2013/001188 WO2013159893A1 (en) | 2012-04-22 | 2013-04-22 | Arc-deposited al-cr-o coatings having enhanced coating properties |
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US8652589B2 (en) * | 2008-01-25 | 2014-02-18 | Oerlikon Trading Ag, Truebbach | Permeation barrier layer |
MX2016005564A (es) * | 2013-11-03 | 2016-12-09 | Oerlikon Surface Solutions Ag Pfäffikon | Capa de carrera contra oxidacion. |
DE102016125042A1 (de) * | 2015-12-28 | 2017-06-29 | Oerlikon Surface Solutions Ag, Pfäffikon | Infrarotspiegel mit einer thermisch stabilen Schicht |
KR102630008B1 (ko) * | 2017-09-15 | 2024-01-29 | 오를리콘 서피스 솔루션스 아크티엔게젤샤프트, 페피콘 | 열적 안정성이 높은 Al-Cr-O 계 코팅 및 그 제조 방법 |
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BR112014026231A2 (pt) | 2017-06-27 |
CN104350172B (zh) | 2016-10-12 |
RU2014146776A (ru) | 2016-06-10 |
RU2632348C2 (ru) | 2017-10-04 |
KR102219393B1 (ko) | 2021-02-24 |
KR20140147127A (ko) | 2014-12-29 |
AR090735A1 (es) | 2014-12-03 |
US9677169B2 (en) | 2017-06-13 |
CA2871067A1 (en) | 2013-10-31 |
JP6200488B2 (ja) | 2017-09-20 |
US20150111795A1 (en) | 2015-04-23 |
WO2013159870A1 (en) | 2013-10-31 |
CN104350172A (zh) | 2015-02-11 |
EP2841618B1 (en) | 2018-08-08 |
WO2013159893A1 (en) | 2013-10-31 |
EP2841618A1 (en) | 2015-03-04 |
CA2871067C (en) | 2020-07-21 |
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