Oxidation behavior and microstructural evolution of ZrB₂-35MoSi₂-10Al composite coating

Abstract

In the present work, detonation spraying was used for preparing new ZrB₂-35MoSi₂-10Al coatings on the surface of C/C composites without a sublayer. As a stabilizer of high-temperature modification of zirconia, and to increase the wettability of the surface of C/C composites, 5 wt.% Y2O3 and 10 wt.% Al were added to the initial powder mixture, respectively. The results indicated that a new ZrB₂-35MoSi₂-10Al composite coating could be used on the surface of C/C composites as a protective layer from oxidation at elevated temperatures