发明授权
- 专利标题： Low conductivity and sintering-resistant thermal barrier coatings
- 专利标题（中）： 低导电性和耐烧结热障涂层
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申请号： US10928496申请日： 2004-08-27
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公开(公告)号： US07001859B2公开(公告)日： 2006-02-21
- 发明人: Dongming Zhu , Robert A. Miller
- 申请人： Dongming Zhu , Robert A. Miller
- 申请人地址： US OH Cleveland US DC Washington
- 专利权人： Ohio Aerospace Institute,The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- 当前专利权人： Ohio Aerospace Institute,The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- 当前专利权人地址： US OH Cleveland US DC Washington
- 代理机构： Pearne & Gordon LLP
- 主分类号： C04B35/48
- IPC分类号： C04B35/48
摘要：
A thermal barrier coating composition is provided. The composition has a base oxide, a primary stabilizer, and at least two additional cationic oxide dopants. Preferably, a pair of group A and group B defect cluster-promoting oxides is used in conjunction with the base and primary stabilizer oxides. The new thermal barrier coating is found to have significantly lower thermal conductivity and better sintering resistance. In preferred embodiments, the base oxide is selected from zirconia and hafnia. The group A and group B cluster-promoting oxide dopants preferably are selected such that the group A dopant has a smaller cationic radius than the primary stabilizer oxide, and so that the primary stabilizer oxide has a small cationic radius than that of the group B dopant.
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