JP2008196040A - 耐熱部材 - Google Patents
耐熱部材 Download PDFInfo
- Publication number
- JP2008196040A JP2008196040A JP2007035670A JP2007035670A JP2008196040A JP 2008196040 A JP2008196040 A JP 2008196040A JP 2007035670 A JP2007035670 A JP 2007035670A JP 2007035670 A JP2007035670 A JP 2007035670A JP 2008196040 A JP2008196040 A JP 2008196040A
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- JP
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- Prior art keywords
- layer
- heat
- resistant member
- hafnium oxide
- oxide layer
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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Abstract
【解決手段】金属またはセラミックス部材から成る基材1と、この基材1の表面に被覆される遮熱コーティング層4とから成り、上記遮熱コーティング層4が、結合層として機能する金属層2と、この金属層2の上面に被覆された少なくとも1層のセラミックス層3とから構成される耐熱部材において、上記セラミックス層3のうちの少なくとも1層が酸化ハフニウムを主成分とするセラミックス層から成るとともに、このセラミックス層は酸化ハフニウムを85%以上含有することを特徴とする耐熱部材である。
【選択図】 図2
Description
図2に概略構成を示すように、質量%で16Cr−8.5Co−1.75Mo−2.6W−1.75Ta−0.9Nb−3.4Al−3.4Ti−残部Niなる組成を有するNi基超合金基材1の表面に32Ni−21Cr−6Al−0.5Y−残部Coなる組成を有するNiCoCrAlY合金から成る金属層2を減圧プラズマ溶射法により約150μmの厚さでコーティングした。さらに、金属層2の表面に電子ビーム蒸着法(EB−PVD)を使用して厚さが約300μmの酸化ハフニウム層3をセラミックス層としてコーティングし遮熱コーティング層4を形成することにより実施例1〜3および比較例1〜2に係る耐熱部材をそれぞれ調製した。その際、安定化材としての酸化イットリウム粉末と酸化ハフニウム粉末との配合比を変えて原料粉末中の酸化ハフニウムの含有量が98%(実施例1)、90%(実施例2)、85%(実施例3)、80%(比較例1)と変えてセラミックス層の蒸着を実施した。
次に本発明に係る耐熱部材の他の実施形態について、添付図2、図5および表1を用いて説明する。実施例1〜3と同様に、図2に示すNi基超合金基材1の表面にNiCoCrAlY合金を減圧プラズマ溶射法により溶射し厚さが約150μmの金属層2を形成した。次に、金属層2の表面にプラズマ溶射法を使用し、酸化ハフニウムを98%(残部Y2O3)含有し厚さが300μmである酸化ハフニウム層3をコーティングして遮熱コーティング層4を形成することにより実施例4,5用の耐熱素材を調製した。
次に本発明に係る耐熱部材のセラミックス層を種々のコーティング法により形成した場合の影響について、図2および表2を参照して説明する。
次に本発明に係る耐熱部材の他の実施形態について、添付図6(a)〜(d)、図7および表3を参照して具体的に説明する。実施例1〜3と同様に、Ni基超合金基材1の表面にNiCoCrAlY合金から成る金属層2を減圧プラズマ溶射法によって厚さが約150μmとなるようにコーティングした。
次に本発明に係る耐熱部材のその他の実施形態について、添付する図8(a)、(b)および表4を参照して説明する。図8(a)に示すように、実施例1にて使用したNi基超合金基材1の表面に減圧プラズマ溶射法にてNiCoCrAlY合金から成る金属層2を約150μmの厚さにコーティングした。その表面に厚さ1〜3μmの酸化アルミニウム層5と、酸化ハフニウムを95%(残部Y2O3)含有し、厚さが300μmである酸化ハフニウム層3とをコーティングすることにより遮熱コーティング層4fを基材1に一体に形成した実施例15に係る耐熱部材を調製した。
Claims (10)
- 金属またはセラミックス部材から成る基材と、この基材の表面に被覆される遮熱コーティング層とから成り、上記遮熱コーティング層が、結合層として機能する金属層と、この金属層の上面に被覆された少なくとも1層のセラミックス層とから構成される耐熱部材において、上記セラミックス層のうちの少なくとも1層が酸化ハフニウムを主成分とするセラミックス層から成るとともに、このセラミックス層は酸化ハフニウムを85%以上含有することを特徴とする耐熱部材。
- 前記酸化ハフニウムを主成分とするセラミックス層が、基材の板厚方向に沿って形成した複数の酸化ハフニウム結晶粒毎に分割されたセグメント構造、または酸化ハフニウムを主成分とするセラミックス層の厚さ方向に進展する亀裂によってランダムに分割されたセグメント構造を有することを特徴とする請求項1記載の耐熱部材。
- 前記酸化ハフニウムを主成分とするセラミックス層は、イットリウムを含む希土類元素の少なくとも1種の酸化物を0%以上15%未満含有することを特徴とする請求項1または2記載の耐熱部材。
- 前記酸化ハフニウムを主成分とするセラミックス層は、物理蒸着法、化学蒸着法およびプラズマ溶射法のいずれか一つの方法、もしくは上記方法の複数の組み合わせによって基材表面に形成されていることを特徴とする請求項1ないし3のいずれかに記載の耐熱部材。
- 前記遮熱コーティング層は、結合層として機能する金属層と、この金属層の上面に被覆した酸化アルミニウム層と、この酸化アルミニウム層の上面に被覆した酸化ハフニウムを主成分とするセラミックス層とから構成されることを特徴とする請求項1ないし4のいずれかに記載の耐熱部材。
- 前記遮熱コーティング層は、結合層として機能する金属層と、この金属層の上面に被覆した酸化アルミニウム層と、この酸化アルミニウム層の上面に被覆した酸化イットリウム層と、さらにこの酸化イットリウム層の上面に被覆した酸化ハフニウムを主成分とするセラミックス層とから構成されることを特徴とする請求項1ないし4のいずれかに記載の耐熱部材。
- 前記遮熱コーティング層は、結合層として機能する金属層と、この金属層の上面に被覆した酸化アルミニウム層と、この酸化アルミニウム層の上面に被覆した酸化ジルコニウム層と、さらにこの酸化ジルコニウム層の上面に被覆した酸化ハフニウムを主成分とするセラミックス層とから構成されることを特徴とする請求項1ないし4のいずれかに記載の耐熱部材。
- 前記遮熱コーティング層は、結合層として機能する金属層と、この金属層の上面に被覆した酸化アルミニウム層と、この酸化アルミニウム層の上面に被覆した酸化イットリウム層と、この酸化イットリウム層の上面に被覆した酸化ジルコニウム層と、さらにこの酸化ジルコニウム層の上面に被覆した酸化ハフニウムを主成分とするセラミックス層とから構成されることを特徴とする請求項1ないし4のいずれかに記載の耐熱部材。
- 前記遮熱コーティング層のうち少なくとも1層を中間層とし、前記酸化アルミニウム層と前記酸化イットリウム層との接合界面、前記酸化イットリウム層と前記酸化ジルコニウム層との接合界面、もしくは前記酸化ジルコニウム層と前記酸化ハフニウムを主成分とするセラミックス層との接合界面の少なくとも1箇所に上記中間層を設けると共に、
上記中間層は接合界面で隣接する2層の組成とほぼ同一の組成をこの中間層の被覆厚さ方向の各端面に有すると共に、その成分組成が厚さ方向に連続的または段階的に変化していることを特徴とする請求項5ないし8のいずれかに記載の耐熱部材。 - 前記結合層として機能する金属層はMCrAlY合金(但し、MはNi、CoおよびFeから選択される少なくとも1種の元素)から成り、この金属層の上面に酸化ハフニウムを主成分とするセラミックス層を設けることを特徴とする請求項1ないし9のいずれかに記載の耐熱部材。
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EP08002661A EP1959100A3 (en) | 2007-02-16 | 2008-02-13 | Heat resistant member |
US12/031,113 US20080199711A1 (en) | 2007-02-16 | 2008-02-14 | Heat resistant member |
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JP2019523825A (ja) * | 2016-06-10 | 2019-08-29 | サフラン | ハフニウムを含有するニッケル系超合金でできた部品の製造方法 |
CN110578143A (zh) * | 2019-09-30 | 2019-12-17 | 中国科学院金属研究所 | 利用大气等离子喷涂制备Al-ZrO2/Y2O3复合涂层材料的方法 |
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RU2545881C2 (ru) * | 2013-06-28 | 2015-04-10 | Фонд поддержки научной, научно-технической и инновационной деятельности "Энергия без границ" (Фонд "Энергия без границ") | Способ нанесения многослойного теплозащитного покрытия |
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DE102018217059A1 (de) * | 2018-10-05 | 2020-04-09 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Multilayer-Keramik für den Einsatz in Gasturbinen |
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WO2014076829A1 (ja) * | 2012-11-19 | 2014-05-22 | 株式会社 日立製作所 | 遮熱コーティング膜を有するガスタービン部材 |
JP2019523825A (ja) * | 2016-06-10 | 2019-08-29 | サフラン | ハフニウムを含有するニッケル系超合金でできた部品の製造方法 |
CN110578143A (zh) * | 2019-09-30 | 2019-12-17 | 中国科学院金属研究所 | 利用大气等离子喷涂制备Al-ZrO2/Y2O3复合涂层材料的方法 |
KR20210044504A (ko) * | 2019-10-15 | 2021-04-23 | 최우용 | 복합소재를 이용한 차세대 기능성 세라믹 패널 |
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