文献类型：期刊文献

英文题名：Achieving high anti-sintering performance of plasma-sprayed YSZ thermal barrier coatings through pore structure design

作者：Huang, Jibo[1,2];Chu, Xin[1];Yang, Tin[3];Fang, Huanjie[3];Ye, Dongdong[4];Wang, Weize[3];Zhang, Xiaofeng[1];Sun, Wen[1];Huang, Renzhong[1];Li, Chang-Jiu[2]

机构：[1]Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510650, Guangdong, Peoples R China;[2]Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Bwhavior Mat, Xian 710049, Shaanxi, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[4]Anhui Polytech Univ, Sch Artificial Intelligence, Wuhu 241000, Peoples R China

年份：2022

卷号：435

外文期刊名：SURFACE & COATINGS TECHNOLOGY

收录：;EI(收录号：20220811698241);WOS:【SCI-EXPANDED(收录号:WOS:000779181200001)】；

基金：This research was supported by Guangdong Academy of Sciences Special Fund for Comprehensive Industrial Technology Innovation Center Building (No. 2022GDASZH-2022010107) , Key Area Research and Development Program of Guangdong Province (No. 2020B0101330001) , International Science & Technology Cooperation Program of Guangdong Province (No. 2020A0505100046) , Science and Technology Program of Guangzhou (No. 202007020008) , National Science and Technology Major Project (2019-VII-0007-0147) and the Postdoctoral Research Program on Innovative Practice in Jiangmen (JMBSH2021B02) . The authors would like to thank Liu Jia from Shiyanjia Lab ( www.shiyanjia.com ) for the XRD analysis.

语种：英文

外文关键词：Thermal barrier coating; Plasma spraying; Pore structure design; Sintering

摘要：Sintering is one of the critical factors leading to thermal and mechanical degradation of plasma-sprayed thermal barrier coatings (TBCs) in service under high temperature. The sintering resistance of the coating is expected to be improved through pore structure design. In this study, through a strategically improved powder feeding process, 8YSZ powders with fine-sized and coarse-sized pores were injected from the tail of plasma flame during plasma spraying to design porous coatings containing two differently flattened particles with different pore structures. The microstructural and property evolutions during sintering of the coatings were systematically studied compared with traditionally structured coatings. The effect of pore morphology on its sintering behavior was analyzed by quasi-in-situ observation of microstructure evolution. Results show that the anti-sintering performance of plasma-sprayed coating can be improved by adjusting the pore structure of coating with porous unmelted particles. In particular, the introduction of unmelted particles with coarse-sized pores can ensure that the coating has excellent thermal and mechanical properties for a long time. The results of this study provide guidance for structural design of anti-sintering plasma-sprayed coatings.