School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang, China
Email: 17506150698@139.com
Manuscript received April 3, 2026; accepted May 24, 2026; published June 15, 2026
Abstract—Aero engines face significant corrosion risks from environmental sediments like volcanic ash, industrial smoke, automobile exhaust, and PM2.5 during high-altitude flights. These deposits, composed of CaO-MgO-Al2O3-SiO2 (CMAS), have a melting point of 1230°C, substantially lower than the operating temperature of aero engines. However, advanced Thermal Barrier Coatings (TBCs) have demonstrated effective resistance against CMAS-induced corrosion. This paper reviews the literature extensively, systematically reviews the composition of CMAS, its corrosion mechanism and protection strategies, focuses on the analysis of the corrosion mechanism of CMAS in different environments, and finds that the atmospheric corrosion mechanism is different from that of the ocean, which provides help for the improvement of TBCs, and provides suggestions and future research directions for the development of advanced aero engines.
Keywords—CMAS corrosion, thermal barrier coatings, Aerospace, aero engines, Protective technology
Cite: Jingyi Wang, "A Comprehensive Analysis of CMAS Characterization, Corrosion Scenarios, and Protective Measures," International Journal of Engineering and Technology, vol. 18, no. 2, pp. 53-56, 2026.
Copyright © 2026 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (
CC BY 4.0).
