High-Temperature (to 1600 °С) Oxidation of ZrB₂–MoSi₂ Ceramics in Air

Abstract

Thermal gravimetry and differential thermal analyses are used to study nonisothermal high-temperature oxidation of 56 wt.% ZrB₂–44 wt.% MoSi₂ and 86 wt.% ZrB₂–14 wt.% MoSi₂ ceramics in air up to 1600 °С. Oxide layers that form on samples at different oxidation stages are studied using AES, EDX, and SEM analyses. It has been concluded that the ZrB₂–MoSi₂ ceramics exhibits exceptionally high oxidation resistance.