发明名称 |
Architectures for high temperature TBCs with ultra low thermal conductivity and abradability and method of making |
摘要 |
A method for fabricating thermal barrier coatings. The thermal barrier coatings are produced with a fine grain size by reverse co-precipitation of fine powders. The powders are then sprayed by a solution plasma spray that partially melts the fine powders while producing a fine grain size with dense vertical cracking. The coatings comprise at least one of 45% -65% Yb 2 O 3 the balance Zr, Yb/Y/Hf/Ta the balance Zr and 2.3-7.8% La, 1.4-5.1% Y and the balance Zr and are characterized by a thermal conductivity that is about 25-50% lower than that of thermal barrier coatings comprising YSZ. The thermal barrier coatings also are characterized by at least one of excellent erosion resistance, fracture toughness and abrasion resistance. |
申请公布号 |
EP2799588(A3) |
申请公布日期 |
2015.04.29 |
申请号 |
EP20140163745 |
申请日期 |
2014.04.07 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
PARAKALA, PADMAJA;PABLA, SURINDER S.;MARGOLIES, JOSHUA LEE;RUUD, JAMES ANTHONY;ANAND, KRISHNAMURTHY;SCHAEFFER, JON CONRAD |
分类号 |
C23C4/12;C04B35/486;C23C28/00;C23C28/04;F01D5/28 |
主分类号 |
C23C4/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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