JP6931008B2 - ハフニウムを含まないニッケル系単結晶超合金部品を腐食及び酸化から保護する方法 - Google Patents
ハフニウムを含まないニッケル系単結晶超合金部品を腐食及び酸化から保護する方法 Download PDFInfo
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Description
しかし、これはこの超合金の溶解をより困難にする。
− ハフニウムを含まないニッケル系単結晶超合金部品の製造工程、
− 部品の上に、ハフニウムを含む第1の層、次いで少なくとも10原子%のアルミニウムを含む合金のアンダーコート及びハフニウムを含む第2の層を同時に又は交互に堆積させて、混合層を形成し、最後にハフニウムを含む第3の層を堆積させる工程、
− ハフニウムを含む第1の層を拡散させて、ハフニウムを含まないニッケル系単結晶超合金部品の上部に第1の相互拡散領域を形成し、ハフニウムを含む第3の層を拡散させて、混合層の表面に第2の相互拡散領域を形成する工程、
− 拡散処理の後に、第2の相互拡散領域の酸化処理を行い、第2の相互拡散領域の表面上にハフニウムをドープしたアルミナの層を得る工程。
− この方法は、拡散処理を行う前に、様々な層及びアンダーコートを堆積させる第1の堆積工程を有し、
− この方法が、少なくとも以下の工程:
・ ハフニウムを含まないニッケル系単結晶超合金部品を製造する工程、
・ 部品上に、ハフニウムを含む第1の層を堆積させる工程、
・ ハフニウムを含むこの第1の層を拡散させて、ハフニウムを含まないニッケル系単結晶超合金部品の表面に第1の相互拡散領域を形成する工程、
・ 第1の相互拡散領域上に、少なくとも10原子%のアルミニウムを含む合金のアンダーコートと、ハフニウムを含む第2の層とを同時に又は交互に堆積させて、混合層を形成する工程、
・ 混合層上に、ハフニウムを含む第3の層を堆積させる工程、
・ ハフニウムを含むこの第3の層を拡散させて、混合層の表面に第2の相互拡散領域を形成する工程、
・ 第2の相互拡散領域の酸化処理を行って、第2の相互拡散領域の表面にハフニウムをドープしたアルミナの層を得る工程
を含み、
− この方法は、ハフニウムをドープしたアルミナの層上に遮熱コーティングを堆積させる工程を含み、
− 堆積工程の少なくとも1つは、物理気相成長(PVD)によって、好ましくは陰極スパッタリングによって実施され、
− 堆積は、100℃〜900℃の間に含まれる温度で、0.1Pa〜1Paの間に含まれる圧力下で、2〜15W/cm2の間に含まれる電力密度で、−150V〜―500Vの間に含まれる負の分極で、−200V〜500Vの間のイオン衝撃下で10〜30分間の陰極スパッタリングによって実施され、
− 拡散処理は、真空下又はアルゴンと5体積%のヘリウムの混合物の存在下での熱処理によって実施され、この熱処理は、800℃〜1200℃の間に含まれる温度に達するまで昇温する工程、この温度を1時間〜4時間維持する工程、及び室温に達するまで温度を下げて冷却する工程を含み、
− 第2の相互拡散領域(41)の酸化処理は、酸素又はアルゴンの分圧下での熱処理によって実施され、この熱処理は、900℃〜1200℃の間に含まれる温度に達するまで昇温する工程、
この温度を1時間未満維持する工程及び室温に達するまで冷却する工程を含む。
これらの図面に関して、
− 図1〜8は、本発明に従った方法の第1の実施形態の様々な工程を表す図である。
− 図9〜15は、本発明に従った方法の第2の実施形態の様々な工程を表す図である。
それらは文字A〜Fによって識別される。
− 堆積中の加熱:100℃〜900℃、
− 圧力:0.1Pa〜1Pa、
− 電力密度:2〜15W/cm2、
− 分極:−500V〜−150V。
− 昇温:好ましくは80℃〜100℃/分、
− 酸化段階:900℃〜1200℃の間に含まれる温度で0.5時間〜1時間、
− 冷却、降温:好ましくは80℃〜100℃/分。
Claims (15)
- 腐食及び酸化から、ハフニウムを含まないニッケル系単結晶超合金部品(1)を保護する方法であって、該方法は、少なくとも以下の工程:
− ハフニウムを含まないニッケル系単結晶超合金部品(1)の製造工程、
− 部品(1)の上に、ハフニウムを含む第1の層(2)、次いで少なくとも10原子%のアルミニウムを含む合金のアンダーコート及びハフニウムを含む第2の層を同時に又は交互に部品上に堆積させて、混合層(3)を形成し、最後にハフニウムを含む第3の層(4)を堆積させる工程、
− ハフニウムを含む第1の層(2)を拡散させて、ハフニウムを含まないニッケル系単結晶超合金部品(1)の上部に第1の相互拡散領域(21)を形成し、ハフニウムを含む第3の層(4)を拡散させて、混合層(3)の表面に第2の相互拡散領域(41)を形成する工程、
− 拡散処理の後に、第2の相互拡散領域(41)の酸化処理を行い、第2の相互拡散領域(41)の表面にハフニウムをドープしたアルミナの層(42)を得る工程
を含むことを特徴とする該方法。 - 該方法が、拡散処理を実施する前に、様々な層及びアンダーコートを堆積させる第1の堆積工程を有することを特徴とする、請求項1に記載の方法。
- 該方法が、少なくとも以下の工程:
− ハフニウムを含まないニッケル系単結晶超合金部品(1)を製造する工程、
− 部品(1)の上に、ハフニウムを含む第1の層(2)を堆積させる工程、
− ハフニウムを含む第1の層を拡散させて、ハフニウムを含まないニッケル系単結晶超合金部品(1)の表面に第1の相互拡散領域(21)を形成する工程、
− 第1の相互拡散領域(21)の上に、少なくとも10原子%のアルミニウムを含む合金のアンダーコートと、ハフニウムを含む第2の層とを同時に又は交互に堆積させて、混合層(3)を形成する工程、
− 混合層(3)の上に、ハフニウムを含む第3の層(4)を堆積させる工程、
− ハフニウムを含む第3の層(4)を拡散させて、混合層(3)の表面に第2の相互拡散領域(41)を形成する工程、
− 第2の相互拡散領域(41)の酸化処理を行って、第2の相互拡散領域(41)の表面にハフニウムをドープしたアルミナの層(42)を得る工程
を含むことを特徴とする、請求項1に記載の方法。 - 該方法が、ハフニウムをドープしたアルミナ(3)の層上に熱障壁層(5)を堆積させる工程を含むことを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 堆積工程の少なくとも1つが、物理気相成長(PVD)によって実施されることを特徴とする、請求項1から4のいずれか一項に記載の方法。
- 堆積工程の少なくとも1つが、陰極スパッタリングによって実施されることを特徴とする、請求項5に記載の方法。
- 堆積が、100℃〜900℃の間に含まれる温度で、0.1Pa〜1Paの間に含まれる圧力下で、2〜15W/cm2の間に含まれ電力密度で、−500V〜―150Vの間に含まれる負の分極で、−200V〜500Vの間のイオン衝撃下で10〜30分間の陰極スパッタリングによって実施されることを特徴とする、請求項6に記載の方法。
- 拡散処理が、真空下又はアルゴンと5体積%のヘリウムとの混合物の存在下での熱処理によって実施され、この熱処理は、800℃〜1200℃の間に含まれる温度に達するまで昇温する工程、この温度を1時間〜4時間維持する工程、及び室温に達するまで温度を下げて冷却する工程を含むことを特徴とする、請求項1から7のいずれか一項に記載の方法。
- 第2の相互拡散領域(41)の酸化処理が、酸素又はアルゴンの分圧下での熱処理によって実施され、この熱処理は、900℃〜1200℃の間に含まれる温度に達するまで昇温する工程、この温度を1時間未満維持する工程及び室温に達するまで冷却する工程を含むことを特徴とする、請求項1から8のいずれか一項に記載の方法。
- ハフニウムを含む前記第1の層(2)が、50nm〜800nmの間に含まれる厚さを有することを特徴とする、請求項1から9のいずれか一項に記載の方法。
- ハフニウムを含む前記第1の層(2)が、50nm〜300nmの間に含まれる厚さを有することを特徴とする、請求項10に記載の方法。
- 少なくとも10原子%のアルミニウムを含む合金のアンダーコートが、NiAlCrSi、NiAlCrSiPt、NiCoAlCrSiPt、NiAl、NiPtAl又はMCrAlYから選択され、式中、Mは、コバルト、ニッケル又はコバルト−ニッケルに等しいことを特徴とする、請求項1から11のいずれか一項に記載の方法。
- 少なくとも10原子%のアルミニウムを含む合金のアンダーコートが、5μm〜30μmの間に含まれる厚さを有することを特徴とする、請求項1から12のいずれか一項に記載の方法。
- ハフニウムを含む第2の層が、20nm〜700nmの間に含まれる厚さを有することを特徴とする、請求項1から13のいずれか一項に記載の方法。
- ハフニウムを含む第3の層(4)が、10nm〜100nmの間に含まれる厚さを有することを特徴とする、請求項1から14のいずれか一項に記載の方法。
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FR1655338A FR3052464B1 (fr) | 2016-06-10 | 2016-06-10 | Procede de protection contre la corrosion et l'oxydation d'une piece en superalliage monocristallin a base de nickel exempt d'hafnium |
FR1655338 | 2016-06-10 | ||
PCT/FR2017/051473 WO2017212193A1 (fr) | 2016-06-10 | 2017-06-09 | Procédé de protection contre la corrosion et l'oxydation d'une pièce en superalliage monocristallin à base de nickel exempt d'hafnium |
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EP (1) | EP3469112B1 (ja) |
JP (1) | JP6931008B2 (ja) |
CN (1) | CN109312445B (ja) |
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FR3096690B1 (fr) * | 2019-05-27 | 2021-07-23 | Safran | Procédé de protection contre la corrosion |
DE102021109967A1 (de) | 2021-04-20 | 2022-10-20 | Leonhard Kurz Stiftung & Co. Kg | Verfahren zum Herstellen eines Mehrschichtkörpers, Mehrschichtkörper, Verwendung eines Mehrschichtkörpers, Verwendung einer ersten Schicht aus einem ersten Metall und einer zweiten Schicht aus einem zweiten Metall in einem Mehrschichtkörper sowie Verwendung einer Wärmebeaufschlagungsvorrichtung |
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US3951642A (en) * | 1974-11-07 | 1976-04-20 | General Electric Company | Metallic coating powder containing Al and Hf |
RU2053310C1 (ru) * | 1991-01-14 | 1996-01-27 | Всероссийский научно-исследовательский институт авиационных материалов | Способ защиты деталей сложной формы из никелевых сплавов |
US5482789A (en) * | 1994-01-03 | 1996-01-09 | General Electric Company | Nickel base superalloy and article |
JPH07247803A (ja) * | 1994-03-14 | 1995-09-26 | Toshiba Corp | タービンブレードの製造方法 |
CA2165641C (en) * | 1994-12-24 | 2007-02-06 | David Stafford Rickerby | A method of applying a thermal barrier coating to a superalloy article and a thermal barrier coating |
US5989733A (en) * | 1996-07-23 | 1999-11-23 | Howmet Research Corporation | Active element modified platinum aluminide diffusion coating and CVD coating method |
EP0846788A1 (en) * | 1996-12-06 | 1998-06-10 | Siemens Aktiengesellschaft | An article having a superalloy substrate and an enrichment layer placed thereon, and methods of its manufacturing |
US6514629B1 (en) * | 1998-12-15 | 2003-02-04 | General Electric Company | Article with hafnium-silicon-modified platinum-aluminum bond or environmental coating |
US6296447B1 (en) * | 1999-08-11 | 2001-10-02 | General Electric Company | Gas turbine component having location-dependent protective coatings thereon |
US6585864B1 (en) * | 2000-06-08 | 2003-07-01 | Surface Engineered Products Corporation | Coating system for high temperature stainless steel |
FR2814473B1 (fr) * | 2000-09-25 | 2003-06-27 | Snecma Moteurs | Procede de realisation d'un revetement de protection formant barriere thermique avec sous-couche de liaison sur un substrat en superalliage et piece obtenue |
US6933062B2 (en) * | 2001-08-16 | 2005-08-23 | General Electric Company | Article having an improved platinum-aluminum-hafnium protective coating |
EP1803142A1 (en) * | 2004-09-24 | 2007-07-04 | Zond, Inc. | Apparatus for generating high-current electrical discharges |
US7413778B2 (en) * | 2005-12-05 | 2008-08-19 | General Electric Company | Bond coat with low deposited aluminum level and method therefore |
EP2239351B1 (en) * | 2009-04-09 | 2013-03-13 | Siemens Aktiengesellschaft | Introduction of at least one of the elements of hafnium, lanthanum and yttrium into a superalloy component |
FR2974581B1 (fr) * | 2011-04-29 | 2013-05-31 | Snecma | Piece comportant un revetement sur un substrat metallique en superalliage, le revetement comprenant une sous-couche metallique |
RU2452793C1 (ru) * | 2011-06-22 | 2012-06-10 | Российская Федерация в лице Министерства промышленности и торговли Российской Федерации (Минпромторг России) | Способ защиты деталей газовых турбин из никелевых сплавов |
CN102991021A (zh) * | 2012-12-14 | 2013-03-27 | 南京航空航天大学 | 一种超高温防氧化复合梯度涂层及其制备方法 |
FR3052463B1 (fr) * | 2016-06-10 | 2020-05-08 | Safran | Procede de fabrication d'une piece en superalliage a base de nickel contenant de l'hafnium |
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RU2019100057A3 (ja) | 2020-07-13 |
CN109312445A (zh) | 2019-02-05 |
WO2017212193A1 (fr) | 2017-12-14 |
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JP2019524983A (ja) | 2019-09-05 |
BR112018075435B1 (pt) | 2022-06-14 |
CA3026710A1 (fr) | 2017-12-14 |
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