Microstructure and Properties of Detonation-Sprayed Thermal Barrier Coatings Based on ZrO2

V.Oliker,
 
S.A.Abdurashitova,
   
A.A.Bondarenko
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2013, #01/02
http://www.materials.kiev.ua/article/915

Abstract

The formation of detonation-sprayed thermal barrier coatings based on ZrO2 is studied. The influence of spraying modes on the structure and mechanical properties of the coatings is deter-mined. It is established that the microstructure of the coatings and thus their mechanical properties can be improved by controlling the weight of ZrO2–7%Y2O3 powder sprayed per shot. A quan-titative performance evaluation of the mechanical properties of thermal barrier coatings by indentation method has shown good results.


DETONATION SPRAYING, FRACTURE TOUGHNESS, MICROSTRUCTURE, THERMAL BARRIER COATINGS