发明公开
- 专利标题： Dysprosia stabilized zirconia abradable
- 专利标题（中）： Abreibbares氧化镝稳定性Zirkonoxid
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申请号： EP07109541.8申请日： 2007-06-04
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公开(公告)号： EP1865150A1公开(公告)日： 2007-12-12
- 发明人: Sporer, Dieter R., Dr. , Taeck, Ulrike , Dorfman, Mitchell R., c/o Sulzer Metco (US) Inc. , Nicoll, Andrew R. , Giannozzi, Massimo, c/o GE Oil & Gas Nuovo Pignone S.p.A. , Giovannetti, Iacopo, c/o University of Florence
- 申请人： Sulzer Metco (US) Inc.
- 申请人地址： 1101 Prospect Avenue Westbury, NY 11590 US
- 专利权人： Sulzer Metco (US) Inc.
- 当前专利权人： Sulzer Metco (US) Inc.
- 当前专利权人地址： 1101 Prospect Avenue Westbury, NY 11590 US
- 代理机构： Sulzer Management AG
- 优先权： US811799P 20060608
- 主分类号： F01D5/18
- IPC分类号： F01D5/18 ; C04B35/48 ; C04B35/488 ; C04B35/486 ; C23D5/00 ; C23C4/10 ; C04B38/06 ; F01D5/14
摘要：
Ceramic abradable materials, in particular thermally sprayablc ceramic abradable powder materials, and abradable seals formed by thermally spraying the materials include dysprosia (Dy 2 O 3 ) and zirconia (ZrO 2 ). Coatings are porous whereby the porosity, in part, is induced by plastic or fugitive phases. Abradable seal coatings comprising dysprosia and zirconia exhibit improved thermal shock and sintering resistance and can be worn into tolerance by untreated, bare turbine blades, at least in certain regimes of relative blade speed and coating porosity. Ceramic abradable seal coatings comprising dysprosia and zirconia can be used up to 1200 °C.
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