公开(公告)号：US20160017749A1

公开(公告)日：2016-01-21

申请号：US14772883

申请日：2014-03-04

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Krishan Lal LUTHRA ,  Don M. LIPKIN ,  Julin WAN

IPC: F01D25/00 ,  C04B35/565

Abstract: High-temperature machine components, more particularly, articles capable of operating in high-temperature environments, including for example turbines of gas engines, may be formed of a high temperature ceramic matrix composite that includes a ceramic substrate including silicon; an environmental harrier coating system including a silicon containing bond coat; and a diffusion barrier layer of a carbide or a nitride between the substrate of the article and the silicon bond coat of the environmental barrier coating system. The diffusion harrier layer selectively prevents or reduces the diffusion of boron and impurities from the substrate to the bond coat of the environmental barrier coating system.

Abstract translation: 高温机器部件，更具体地，能够在高温环境中操作的制品，包括例如燃气发动机的涡轮机，可以由包括包括硅的陶瓷基板的高温陶瓷基体复合材料形成; 包括含硅粘结涂层的环境覆盖系统; 以及物品的基板与环境保护涂覆系统的硅键合层之间的碳化物或氮化物的扩散阻挡层。 扩散阻挡层选择性地防止或减少硼和杂质从衬底到环境屏障涂层系统的粘结层的扩散。