1D Micro/Nanomaterial Toughened Ceramic Coatings for Carbon/Carbon Composites

Carbon/carbon (C/C) composites, due to their unique structural characteristics and excellent properties, are one of the most promising materials for high-temperature application in aerospace propulsion systems. However, this composite material is susceptible to high-temperature oxidation in oxygen-containing environment. Coating with Si-based ceramics or ultra-high temperature ceramic (UHTC) materials is proven to be an efficient method for improving the resistances of the C/C composites against oxidation and ablation. Unfortunately, there still remain some challenges in the coating technology, such as the mismatch of C/C substrates and ceramic coatings, as well as the intrinsic brittleness of coating ceramics. To solve these problems, numerous studies were conducted on reinforcing the ceramic coatings with 1D micro/nanomaterials, which exhibit varied structural advantages, such as small size in nanometer scale, large aspect ratio and high structural stability. The research status of 1D micro/nanomaterials reinforced ceramic coatings for C/C composites are discussed in this review.