Invention Grant
- Patent Title: High purity ceramic abradable coatings
- Patent Title (中): 高纯陶瓷耐磨涂层
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Application No.: US11520041Application Date: 2006-09-13
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Publication No.: US07955707B2Publication Date: 2011-06-07
- Inventor: Liangde Xie , Mitchell Dorfman , Richard Schmid , Jacobus C. Doesburg , Matthew Gold
- Applicant: Liangde Xie , Mitchell Dorfman , Richard Schmid , Jacobus C. Doesburg , Matthew Gold
- Applicant Address: US NY Westbury
- Assignee: Sulzer Metco (US), Inc.
- Current Assignee: Sulzer Metco (US), Inc.
- Current Assignee Address: US NY Westbury
- Agency: Greenblum and Bernstein, P.L.C.
- Main IPC: B32B18/00
- IPC: B32B18/00 ; B05D1/36

Abstract:
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.
Public/Granted literature
- US20100311562A1 HIGH PURITY CERAMIC ABRADABLE COATINGS Public/Granted day:2010-12-09
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