The microstructure and thermal properties of Yb2SiO5 coating deposited using APS and PS-PVD methods

Abstract

The new ceramic material for Enviromental Barrier Coatings (EBC) on ceramic material was developed. The ytterbium monosilicate was deposited using two methods: atmospheric plasma spray (APS) and plasma spray physical vapour deposition (PS-PVD). Obtained coating was characterized by dense structure and columns typically formed in PS-PVD process were not observed. In comparison with APS-deposited coating, in this method, both elements segregation and formation of ytterbium oxide occurred. The further research for production of columnar coatings will be necessary. Developed coatings migh be used for next generations of ceramic materials used for gas turbine and jet engine blades and vanes as a high temperature and corrosion protection. The first time the ytterbium monosilicate was produced bot by APS and LPPS methods.