JP5851623B2 - 高温熱バリアコーティング - Google Patents
高温熱バリアコーティング Download PDFInfo
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- JP5851623B2 JP5851623B2 JP2014540411A JP2014540411A JP5851623B2 JP 5851623 B2 JP5851623 B2 JP 5851623B2 JP 2014540411 A JP2014540411 A JP 2014540411A JP 2014540411 A JP2014540411 A JP 2014540411A JP 5851623 B2 JP5851623 B2 JP 5851623B2
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- high temperature
- thermal barrier
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- 239000012720 thermal barrier coating Substances 0.000 title claims description 34
- 239000000203 mixture Substances 0.000 claims description 21
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 238000007751 thermal spraying Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 230000000930 thermomechanical effect Effects 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 18
- 239000010410 layer Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 13
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000010987 cubic zirconia Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 229910002078 fully stabilized zirconia Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
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Description
本発明は、熱機械用の、特にガスタービン用の高温部品の技術に関する。それは、請求項1の前提部に記載される高温熱バリアコーティングに関する。
ガスタービンの技術における進歩は、主に、その部品、特にブレード、翼、熱シールドまたは燃焼器ライナ用の先進的な材料の開発に依存している。他方で、ガスタービン市場における成長を、ガスタービン設備の効率の上昇、および(設備全体の効率を下げることがある)CO2の捕捉(caption)および貯蔵に向けた取り組みにより、京都議定書の目標と合わせることができる。効率の上昇は、タービンブレードおよび燃焼器ライナの冷却の減少によって、または入口温度(firing temperature)の上昇のいずれかによって達成できる。
本発明の課題は、特にガスタービンブレード用の、約1400℃での稼働に20000時間の間耐えることができ且つTBC系の温度範囲1000℃〜1400℃について熱伝導率(TC)k<2W/mKを有する高温熱バリアコーティング(HT−TBC)を提供することである。
(Y1+νTa1-νO4-ν)z(Zr1-xHfxO2)1-z
[式中、xは0.1〜0.5の範囲であり、νは−0.1〜0.2の範囲であり、且つ、zは0.15〜0.25の範囲である]
によって定められることを特徴とする。
本発明は熱バリアコーティング材料および>1400℃までの温度で熱力学的に安定な系を提供することを意図している。前記材料は、高温で安定であり且つ高い靱性値を有する、正方晶系の安定化された材料である。高温安定ジルコニアの大半は立方晶の構造を有し、それは高い靱性を有することが可能ではく、なぜなら、立方晶系においては強弾性が欠如しているからである。
1. 正方晶性を高め、破壊靭性の増加をみちびく、および
2. フォトンの拡散のための散乱中心の密度を高め、熱伝導性の低下をみちびく。
1. (Zr1-xHfx)O2 [x=10%〜25%]中、20mol%のYTaO4
2. (Zr1-xHfx)O2 [x=50%]中、20mol%のYTaO4。
1. 組成物1からは単相の正方晶系、
2. 組成物2からは単相の正方晶系+0.48mol%のm−ZrO2、
3. 単相の正方晶系は1500℃で4時間安定、
4. 正方晶性はHf含有率の上昇に伴い増加。
(Y1+νTa1-νO4-ν)z(Zr1-xHfxO2)1-z
[式中、xは0.1〜0.5の範囲であり、νは−0.1〜0.2の範囲であり、且つzは0.15〜0.25の範囲である]。
1. 長期的に高温に曝された際に立方晶および単斜晶へと分解する現在のイットリア安定化ジルコニアYSZと比較して低減された分解動態; 現在のTBCは1200℃程度の低い温度で数100時間後に既に著しく分解される一方で、提案された組成物は少なくとも1500℃までの温度で非常にわずかな分解を示す。
11 ベース合金
12 ボンディングコート
13 HT−TBC層
14 中間層
A−B X線回折パターン
Claims (8)
- 熱機械の熱的に負荷がかかる部品(10、10’)を保護するための高温熱バリアコーティングであって、前記熱バリアコーティングは安定化されたZrO2組成物からなり、前記組成物は少なくとも15mol%のY1+νTa1-νO4-νで安定化されており、ZrO2は少なくとも10mol%のHfO2で部分的に置換されており、且つ、前記組成物は安定な正方晶系のZrO 2 組成物であり、式
(Y1+νTa1-νO4-ν)z(Zr1-xHfxO2)1-z
[式中、xは0.1〜0.5の範囲であり、νは−0.1〜0.2の範囲であり、且つzは0.15〜0.25の範囲である]
によって定められることを特徴とする、前記高温熱バリアコーティング。 - xが0.15〜0.25の範囲であり、νが0〜0.1の範囲であり、且つzが0.18〜0.23の範囲であることを特徴とする、請求項1に記載の高温熱バリアコーティング。
- 高温熱バリアコーティング(13)が、ベース合金(11)製の部品(10、10’)を被覆することを特徴とする、請求項1または2に記載の高温熱バリアコーティング。
- 部品(10、10’)のベース合金(11)と高温熱バリアコーティング(13)との間にボンディングコート(12)が備えられていることを特徴とする、請求項3に記載の高温熱バリアコーティング。
- ボンディングコート(12)がMCrAlYX [式中、M=Ni、CoまたはFeまたはそれらの混合物、およびX=Si、Ta、B、CaまたはMgまたはそれらの混合物]からなり、且つ、前記ボンディングコート(12)は溶射法によって堆積されることを特徴とする、請求項4に記載の高温熱バリアコーティング。
- ボンディングコート(12)と高温熱バリアコーティング(13)との間に中間層(14)が備えられていることを特徴とする、請求項4または5に記載の高温熱バリアコーティング。
- 中間層(14)が、溶射法によって堆積された7YSZからなることを特徴とする、請求項6に記載の高温熱バリアコーティング。
- 高温熱バリアコーティング(13)が、溶射法によって堆積されることを特徴とする請求項3から7までのいずれか1項に記載の高温熱バリアコーティング。
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JP6216219B2 (ja) * | 2013-11-07 | 2017-10-18 | 一般財団法人ファインセラミックスセンター | 遮熱構造 |
DE102013226594A1 (de) * | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Verfahren zum Herstellen eines Laufrads und eines Läufers |
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CN104831214A (zh) * | 2015-05-09 | 2015-08-12 | 芜湖鼎恒材料技术有限公司 | 一种硬质Fe-HfO2纳米涂层材料及其制备方法 |
JP6941634B2 (ja) * | 2018-03-02 | 2021-09-29 | 一般財団法人ファインセラミックスセンター | 遮熱コーティング |
CN111978087B (zh) * | 2019-05-22 | 2022-04-15 | 北京理工大学 | 一种复合材料及其制备方法和应用 |
CN113773075B (zh) * | 2021-09-22 | 2023-08-18 | 湘潭大学 | 一种抗cmas侵蚀的锆钽系热障涂层材料及其制备方法 |
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US20140242411A1 (en) | 2014-08-28 |
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