|About this Abstract
||Materials Science & Technology 2019
||Surface Protection for Enhanced Materials Performance: Science, Technology, and Application
||Manufacture of Environmental Barrier Coatings by Thermal Spray Techniques
||Robert Vassen, Emine Bakan, Seongwong Kim, Daniel Mack, Olivier Guillon
|On-Site Speaker (Planned)
Environmental barrier coatings (EBCs) are essential to protect ceramic matrix composites against water vapor recession in typical gas turbine environments. The most often used thermal spray techniques for the deposition of EBCs is atmospheric plasma spraying (APS). This technique with its major problems as limited crystallinity, crack formation or loss of constituents will be addressed. In addition, also results on more advanced thermal spray processes as high velocity oxygen fuel (HVOF), suspension plasma spraying (SPS) or very low pressure plasma spraying (VLPPS) will be described. Especially the last method appears suitable to deposit crystalline, dense coatings for example made of YB2Si2O7. Finally, also results of the performance of the different coating systems with respect to thermal cycling, water vapor recession and partially CMAS attack will be presented.
||Definite: At-meeting proceedings