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Study on the growth and wear behavior of the TiAlN-based composite coating deposited on TiCN-based cermets with different binder phase
Wear ( IF 5.3 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.wear.2020.203460
Guang Xian , Ji Xiong , Haibo Zhao , Lijun Xian , Hongyuan Fan , Zhixu Li , Hao Du

Abstract The TiAlN-based composite coating was coated on TiCN-based cermets with different binder phase by arc ion plating. The effects of binder phase within cermets substrates on the microstructure, mechanical properties and wear behavior of the composite coating were investigated. The results show that the growth of the composite coating is affected by binder phase in the cermets substrates. With a higher content of Co binder in the cermets, the composite coating grows faster. Ni as a binder phase in the cermets is more favorable for the growth rate of the surface coating. The grain size of the coating on 10%Co-TiCN-based cermets is the finest and the hardness is the highest. The variation of binder phase in the cermets substrates leads to different adhesion strength of the composite coating. The adhesion strength of the composite coating on the 10%Co-TiCN-based cermets is the highest, which is because of the smallest differences in hardness and thermal expansion coefficient for this coating/substrate couple. The wear behavior of composite coating on 10%Co-TiCN-based substrate is dominated by abrasive wear while that on the other cermets with Ni binder or higher content of Co binder is a mixture form of diffusion wear, oxidation wear and abrasive wear.

中文翻译:

不同结合相TiCN基金属陶瓷上沉积TiAlN基复合涂层的生长和磨损行为研究

摘要 采用电弧离子镀在不同结合相的TiCN基金属陶瓷上涂覆TiAlN基复合涂层。研究了金属陶瓷基体中粘结相对复合涂层微观结构、力学性能和磨损行为的影响。结果表明,复合涂层的生长受金属陶瓷基体中粘结相的影响。金属陶瓷中 Co 粘合剂含量越高,复合涂层的生长速度就越快。Ni作为金属陶瓷中的粘结相更有利于表面涂层的生长速度。10%Co-TiCN基金属陶瓷涂层晶粒最细,硬度最高。金属陶瓷基体中粘结相的变化导致复合涂层的附着强度不同。复合涂层在 10% Co-TiCN 基金属陶瓷上的附着强度最高,这是因为该涂层/基材对的硬度和热膨胀系数差异最小。复合涂层在 10%Co-TiCN 基基体上的磨损行为以磨粒磨损为主,而在其他含 Ni 或更高 Co 粘合剂的金属陶瓷上,复合涂层的磨损行为是扩散磨损、氧化磨损和磨粒磨损的混合形式。
更新日期:2020-11-01
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