公开(公告)号：US20040151840A1

公开(公告)日：2004-08-05

申请号：US10248635

申请日：2003-02-03

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Hongyu Wang ,  Yuk-Chiu Lau ,  Irene Spitsberg ,  Arnold T. Henry

IPC: B05D001/08

CPC classification number: C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  C23C4/02 ,  C23C4/11 ,  C04B41/4527 ,  C04B41/5037 ,  C04B41/5024 ,  C04B35/565 ,  C04B35/584

Abstract: A process of depositing a coating system suitable for use as an environmental barrier coating on various substrate materials, particularly those containing silicon and intended for high temperature applications such as the hostile thermal environment of a gas turbine engine. The process comprises depositing a first coating layer containing mullite, and preferably a second coating layer of an alkaline earth aluminosilicate, such as barium-strontium-aluminosilicate (BSAS), by thermal spraying while maintaining the substrate at a temperature of 800null C. or less, preferably 500null C. or less, by which a substantially crack-free coating system is produced with desirable mechanical integrity.

Abstract translation: 一种沉积涂覆系统的方法，该涂覆系统适合用作各种基材上的环境屏障涂层，特别是含有硅并用于高温应用的那些涂层系统，例如燃气涡轮发动机的恶劣的热环境。 该方法包括通过热喷涂沉积包含莫来石的第一涂层，优选地是碱土金属硅铝酸盐的第二涂层，例如钡 - 锶 - 硅酸铝（BSAS），同时将基底保持在800℃的温度，或 较少，优选500℃或更低，由此产生具有期望的机械完整性的基本上无裂纹的涂层体系。