文献类型：期刊文献

英文题名：Effects of annealing temperature on the microstructure, mechanical and tribological properties of TiAlSiCN coatings

作者：Huang, Biao[1,2];Chen, Li[3];Zhou, Qiong[1];Zhang, Er-geng[1];Li, Chuan-yu[1];Wang, Ya-qi[1];Liang, Dan-Dan[1];Chen, Qiang[1];An, Qi[2]

机构：[1]Shanghai Inst Technol, Shanghai Engn Res Ctr Phys Vapor Deposit PVD Super, Shanghai 201418, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

年份：2024

卷号：50

期号：11

起止页码：20612

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20241215788192);WOS:【SCI-EXPANDED(收录号:WOS:001292319500001)】；

基金：This work is supported by Program of Shanghai Technology Research Leader (Grant Nos. 22XD1434500) .

语种：英文

外文关键词：Annealing temperature; TiAlSiCN coatings; Microstructure; Mechanical properties; Tribological properties

摘要：The effects of annealing temperature on the microstructure, mechanical properties, and tribological properties of TiAlSiCN coatings with C contents of 9.24 at.% and 19.45 at.% are systematically investigated. The results show that all coatings maintain cubic structures with strongly preferential orientation of (200) planes, and the microstructure transforms from amorphous embedded in (Ti, Al)(C, N) nanocrystalline to amorphous encapsulated nanocrystalline with increasing C content. Elevating annealing temperature to 800 degrees C leads to a continuous decline in hardness, whereas the elastic strain resistance H/E increases first and then decreases. Release of H2 2 formed by the breaking of the C-H bonds at 400 degrees C induces a local stress transformation from compressive to tensile. The toughness and hardness decreases dramatically at 600 degrees C by conversion of sp3 3 to sp2. 2 . The wear mechanisms of the coating against Si3N4 3 N 4 counterballs are adhesive and oxidative wear. The coefficient of friction (COF) and wear rate initially decrease followed by an increase. The coatings with a-C structure exhibit lower COF and the wear process is smoother, but showing higher wear rate. Thus, the annealed TiAlSiCN coatings with preferred C content could improve the mechanical and tribological properties.