Advances in ultra-high-temperature ceramic coatings with enhanced oxidation resistance for carbon-based composites

   Recently, Professor Xuanru Ren published a review paper titled "Advances in ultra-high-temperature ceramic coatings with enhanced oxidation resistance for carbon-based composites" in the journal 《Extreme Materials》. Professor Ren is the first author and corresponding author of the paper.

   Carbon-based composites are widely used in aerospace engines, thermal protection systems for hypersonic vehicles, and ultra-high-temperature structural components due to their lightweight, high strength, excellent mechanical properties, and thermal stability. However, the inherent high-temperature oxidation susceptibility of these materials significantly limits their service life, necessitating the development of efficient oxidation-resistant barriers to enhance long-term operational stability. In recent years, ultra-high-temperature ceramic (UHTC) coatings have garnered significant attention for their exceptional oxidation resistance. Nonetheless, practical applications still face challenges such as crack propagation, poor dynamic stability of the oxidation glass layer, oxidation pore defects, and interfacial damage. The article systematically reviews recent advances in UHTC coatings for carbon-based composites, with a focus on the influence of hierarchical structural design on oxidation resistance. It provides an in-depth analysis of the role of advanced manufacturing processes in optimizing microstructural stability and interfacial bonding strength. Furthermore, the high-temperature oxidation protection mechanisms of UHTC coatings are elaborated from perspectives such as the regulation of the oxidation glass layer composition, stabilization of self-generated glass phases, and coating densification. The paper also reviews performance characterization methods for coatings under various service conditions. Finally, addressing existing technical bottlenecks and unresolved challenges in the field of oxidation-resistant coatings for carbon-based composites, the review proposes future research directions and technological prospects based on the current state of research.

   《Extreme Materials》 is an international peer-reviewed journal focusing on materials research in extreme environments. The journal is dedicated to publishing cutting-edge studies on the design, processing, structure-property relationships, and performance prediction of materials under harsh conditions such as extreme temperatures, pressures, dynamic environments, corrosion, and radiation. As a key international platform for exchange in the field of materials science, 《Extreme Materials》actively features innovative research from scholars worldwide, continuously advancing the science of materials for extreme conditions. The publication of this paper also reflects the academic community's recognition of the research team's achievements and affirms China's research capabilities in the field of extreme materials.