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采用等离子喷涂的方法,利用石墨和炭黑两种碳源成功制备出纳米晶Ti CN涂层。对两种喂料进行差热分析,对涂层的相组成、组织结构、晶粒度及磨损性能进行了分析。结果表明,采用炭黑和石墨分别可以制备出主相为Ti C0.2N0.8和Ti C0.7N0.3的致密涂层,主相的平均晶粒度为71.68 nm(Ti C0.2N0.8)、59.44 nm(Ti C0.7N0.3);两种涂层都具有较高的硬度和优异的耐磨性,并且随涂层中C含量的增加而提高,Ti C0.7N0.3的耐磨性能相对更好。
Using plasma spraying method, the nanocrystalline Ti CN coating was successfully prepared by using two carbon sources, graphite and carbon black. Differential thermal analysis of the two feedstocks was carried out to analyze the phase composition, microstructure, grain size and wear properties of the coatings. The results show that the dense coating with main phases of Ti C0.2N0.8 and Ti C0.7N0.3 can be prepared by using carbon black and graphite respectively. The average grain size of the main phase is 71.68 nm (Ti C0.2N0.8 ), 59.44 nm (Ti C0.7N0.3). Both coatings have high hardness and excellent wear resistance, and increase with the increase of C content in the coating. The resistance of Ti C0.7N0.3 Grinding performance is relatively better.