Saint-Gobain has completed testing of a new generation of environmental barrier coatings using rare earth silicates and is evaluating its results. Ceramic matrix composites (CMC) can quickly increase the operating temperature of the engine and reduce weight, thereby reducing fuel consumption and emissions. However, CMC materials are susceptible to steam corrosion, and protective coatings must be used to mitigate damage to the materials.
Saint-Gobain has a long history of thermal spraying powders. After years of research and development, the company has discovered the spray coating from the first generation to the current rare earth monosilicate and double silicate coating process. In addition, the latest specially designed melting process can also provide a very uniform powder coating.