Invited Speaker

Assoc. Prof. Jia Sun

Northwestern Polytechnical University

E-mail: j.sun@nwpu.edu.cn

Title: High entropy ceramic coating on C/C composite: From AI design to HT performance

Profile:

Assoc Prof. Dr. Jia Sun, is a PhD supervisor in Northwestern Polytechnical University (NPU). He is the Aoxiang Rising Star Scholar in NPU, the Youth Lift Program Researcher of Shaanxi Provincial Science and Technology Association, the core member of the G F Innovation Team for High-Temperature and Oxidation-Resistant Composite, and the core member of the Shaanxi Provincial Science and Technology Innovation Team for High-Performance Long-Life Ceramic Coatings. He also serves as the Office Director of the Shaanxi Provincial Key Laboratory for Fiber-Reinforced Lightweight Composite. He mainly engaged in research on the high-temperature oxidation resistance/environmental barrier coating on C/C composite materials, polymer-derived ceramic matrix composites, and ultra-high temperature thermal barrier coatings. He has published 90+ scientific research papers as the first author/corresponding author in journals, such as Mat Sci Eng R: Report, Adv Func Mater, Corros Sci, ACS Appl Mater Interfaces, and Compos Part B-Eng, and has been granted 20+ national invention patents. He now serves as the (young) editorial board member in journals of J Adv Ceram, Adv Powder Mater, J Inorg Mater et al. He has given several Keynote and Invited Talks in renowned international conference. He hosted several fundings from the National Natural Science Foundation of China (NSFC), Key R&D projects of China, Key R&D projects of Shaanxi Province, and the CSC Sino-German Postdoctoral Program. He has received the First Prize (R1) of Excellent Achievement Award for Science and Technology Research in Higher Education Institutions of Shaanxi Province.

Abstract:

Carbon/Carbon (C/C) composites have demonstrated extensive application prospects in aerospace thermal structural components due to their low density, excellent thermal stability, and high-temperature mechanical properties. However, these materials are prone to oxidation reactions in oxidative environments above 400°C, which can lead to a significant decline in mechanical properties, thus severely limiting their practical applications. To address this challenge, ultra-high temperature ceramic materials, with their extremely high melting points and good oxidation resistance, are widely used as surface coatings for C/C composites to enhance their protection against high-temperature oxidation. This presentation focuses on three aspects: i) Machine learning driving the composition selection and high temperature performance of ultra-high temperature ceramic coating; ii) AI design of high-entropy carbides and the prediction of single-phase formation, and iii) Ablation behavior investigation on rare-earth-containing high-entropy carbide coatings. This report will show our research group's recent progress on coating composition selection, preparation, and their ultra-high temperature performance under data-driven artificial intelligence models, and also provide an outlook on future work.