超高温陶瓷材料的氧化烧蚀行为研究

Ultra-high temperature ceramics have excellent physical and chemical stability at high temperatures and exhibit a good dimensional stability at high temperature above 1800 ℃ in an oxidizing environment, which are very promising non-ablative thermal protective structural materials and can be used in hypersonic vehicle, atmospheric re-entry vehicles and rocket-propulsion system. This paper has provided systematic study on the static oxidation and dynamic oxidation and ablation behavior of ultra-high temperature ceramics, and has revealed the main controlling factors of oxidation resistance and oxidation mechanism for ultra-high temperature ceramics, which provides a theoretical foundation for the optimization and application for ultra-high temperature ceramics in the future.