Microstructure and mechanical properties of hot isostatically pressed cermets with TiN coatings

查看全文 作　　者：ZHENG [1,2]Liyun;XIONG [1]Weihao;YAN [1]Xianmei;LI Guo'[1]an

机构地区：[1]State Key Laboratory of Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China;[2]School of Electromechanical Engineering, Hebei University of Engineering, Handan 056038, China

出　　处：《Rare Metals》索引2006年第25卷第6期,共6页

基　　金：This work was financially supported by the National Natural Science Foundation of China (No. 50074017). 摘　　要：To increase the adhesion strength between the coating and the substrate, sintered Ti(C,N)-based cermets were se- lected and deposited with monolayer TiN using a multiarc ion-plating technique; subsequently, hot isostatic pressing (HIP- ing) treatment was performed at 1000°C using nitrogen pressure up to 110 MPa. The mechanical properties of cermets after a coating process and subsequent HIPing treatment have been evaluated with respect to the hardness, the residual stress, and the coating adhesion. The results show that after the HIPing process, there was a higher increase in critical load in the TiN-coated cermets with lower surface roughness compared with those with higher surface roughness. In all cases, the re- sidual stress was found to be compressive. The effects of substrate surface roughness and posttreatment on the adhesion strength of the coatings were thus investigated. It was also found that the HIPing posttreatment process is well suited for in- creasing the adhesion strength between the coating and the substrate. 关键词：微结构机械性加压金属陶瓷 TiN涂料

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Microstructure and mechanical properties of hot isostatically pressed cermets with TiN coatings

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