发明申请
- 专利标题: HIGH PURITY CERAMIC ABRADABLE COATINGS
- 专利标题(中): 高纯度陶瓷不可磨损涂料
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申请号: US11520041申请日: 2006-09-13
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公开(公告)号: US20100311562A1公开(公告)日: 2010-12-09
- 发明人: Liangde Xie , Mitchell Dorfman , Richard Schmid , Jacobus C. Doesburg , Matthew Gold
- 申请人: Liangde Xie , Mitchell Dorfman , Richard Schmid , Jacobus C. Doesburg , Matthew Gold
- 专利权人: Sulzer Metco (US), Inc.
- 当前专利权人: Sulzer Metco (US), Inc.
- 主分类号: C04B35/48
- IPC分类号: C04B35/48 ; B05D3/02
摘要:
The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.
公开/授权文献
- US07955707B2 High purity ceramic abradable coatings 公开/授权日:2011-06-07
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