Oxidation-Resistant Environmental Barrier Coatings for Mo-Based Alloys: A Review

Abstract

Molybdenum-based materials offer high melting temperatures and promising mechanical properties; therefore, they are potential candidates for high-temperature components, such as turbine blades. However, at temperatures above 700 °C, molybdenum suffers from severe pesting phenomenon, leading to decomposition of the component. Therefore, oxidation-resistant environmental barrier coatings are crucial to prevent the material from degradation and to maintain its excellent mechanical properties at high temperatures. This review provides a detailed overview on the different coating concepts for Mo and Mo-based alloys.