Carburization and wear behavior of self-lubricating Ti(C,N)-based cermets with various secondary carbides
Carburization and wear behavior of self-lubricating Ti(C,N)-based cermets with various secondary carbides
复制标题
不同二次碳化物自润滑Ti(C,N)基金属陶瓷的渗碳与磨损行为
DOI：
10.1016/j.ceramint.2021.06.075
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发表时间：
2021-06
影响因子：
5.2
通讯作者：
Hao Du
中科院分区：
文献类型：
--
作者：
Zongyuan Wang;Weicai Wan;Jie Wang;Kunyang Fan;Yuhe Li;Ji Xiong;Hao Du
采用真空烧结和固体渗碳相结合的方法制备了Ti（C，N）基自润滑金属陶瓷，研究了不同碳化物对金属陶瓷渗碳和磨损性能的影响。研究结果表明，固体渗碳导致在所有Ti（C，N）基基体中的石墨的强烈析出。难熔碳化物显著影响金属陶瓷中石墨的形态特征。金属陶瓷基体中的活性碳原子以两种方式消耗：重排，然后以石墨形式沉淀;与金属原子结合，然后以碳化物或碳氮化物形式沉淀。随着溶解在粘结相中的难熔碳化物的量增加，更多的碳原子通过与金属原子键合而被消耗，并且更少的石墨沉淀。碳化物和碳氮化物在陶瓷相中的析出增加了边缘相的厚度。渗碳后，由于石墨的引入和陶瓷颗粒的粗化，金属陶瓷的力学性能明显下降。然而，石墨的存在由于其良好的润滑效果而显著降低了金属陶瓷材料的摩擦系数。结果表明，渗碳处理能有效地改善金属陶瓷的磨损性能。金属陶瓷的磨损性能是由接触表面的力学性能和润滑条件决定的，良好的润滑条件可以部分补偿金属陶瓷在滑动磨损过程中力学性能的下降。
Self-lubricating Ti(C,N)-based cermets were manufactured using vacuum sintering and solid carburizing in this study, and the effects of various carbides on the carburization and wear behavior of the cermets were investigated. The findings demonstrate that solid carburizing resulted in strong graphite precipitation in all the Ti(C,N)-based matrices. Refractory carbides significantly affect the morphological characteristics of graphite in cermets. The activated carbon atoms in the cermet matrix are consumed in two ways: rearrangement followed by precipitation in the form of graphite and combination with metal atoms followed by precipitation in the form of carbides or carbonitrides. As the amount of refractory carbide dissolved in the binder phase increases, more carbon atoms are consumed by bonding with metal atoms, and less graphite is precipitated. The precipitation of carbides and carbonitrides in the ceramic phase increases the rim phase thickness. After carburization, the mechanical properties of the cermets were noticeably degraded owing to the introduction of graphite and the coarsening of ceramic particles. However, the presence of graphite significantly reduced the friction coefficient of the cermet material owing to its good lubrication effect. The decreased mass loss and better wear morphology suggest that the wear deterioration of all the cermets is remarkably mitigated by carburization. The wear properties of cermets are determined by the mechanical properties and the lubrication conditions of the contact surfaces, and good lubrication conditions can partially compensate for the degradation of the mechanical properties of cermets in the sliding wear process.
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DOI：
10.1111/j.1151-2916.2000.tb01415.x
发表时间：
2000-06-01
影响因子：
3.9
作者：
Ahn, SY;Kang, S
通讯作者：
Kang, S
影响因子：
5.2
作者：
Liu, C.;Lin, N.;He, Y. H.
通讯作者：
He, Y. H.
固体渗碳制备自润滑Ti(C,N)基金属陶瓷及其磨损行为
DOI：
10.10164/j.ijnnhm.2017.05.010
发表时间：
2017-09
影响因子：
3.6
作者：
Ye Junliu;Xiong Ji;Guo Zhixing;Yang Tian'en;Zhou Liming;Liu Junbo;Li Shenhou;Li Tijun
通讯作者：
Li Tijun
影响因子：
9.1
作者：
Suresha, S.;Sridhara, B. K.
通讯作者：
Sridhara, B. K.
影响因子：
6.2
作者：
D. Sandoval;J. Roa;O. Ther;E. Tarrés;L. Llanes
通讯作者：
D. Sandoval;J. Roa;O. Ther;E. Tarrés;L. Llanes