首页>
外国专利>
Article having a thermal barrier coating based on a phase-stable solid solution of two ceramics and apparatus and method for making the article
Article having a thermal barrier coating based on a phase-stable solid solution of two ceramics and apparatus and method for making the article
展开▼
机译：具有基于两种陶瓷的相稳定固溶体的热障涂层的制品以及制造该制品的装置和方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
An article (10) having an improved thermal barrier coating (18) is disclosed. The article includes a superalloy substrate (12), and an adherent alumina layer (16) generated on the substrate surface. The article also includes a layer (18) of ceramic material forming a columnar grain, thermal barrier coating on the alumina layer (16). The coating (18) is composed of a generally homogeneous mixture of two materials, such as yttria and ceria and preferably at least about 5w/o yttria, balance ceria. The article (10) may also include an intermediate ceramic bond coat (17), such as a layer of yttria strengthened zirconia, to enhance the adherence of the thermal barrier coating. An associated apparatus and method for making the article are also disclosed. The TBC (thermal barrier coating) is applied by means of a EB-PVD process. The crucible is adapted to contain the ceramics separately from one another. The scan frequency of the electron beam is adapted in relation to the difference in vapour pressure between both materials and to the attainable composition. IMAGE
展开▼
