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首页> 外文期刊>Journal of Materials Engineering and Performance >Synthesis of High-Temperature Self-lubricating Wear Resistant Composite Coating on Ti6Al4V Alloy by Laser Deposition
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Synthesis of High-Temperature Self-lubricating Wear Resistant Composite Coating on Ti6Al4V Alloy by Laser Deposition

机译：Ti6Al4V合金激光沉积高温自润滑耐磨复合涂层的研究。

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摘要

Laser deposition was adopted to prepare novel Ni-based solid solution (gamma-NiCrAlTi)/TiC/alpha-Ti/CaF2 high-temperature self-lubricating wear resistant composite coating on Ti6Al4V alloy. Microstructure, micro-hardness, wear behavior, and counter-body effect of the coating were investigated systematically. It can be seen that the coating mainly consists of gamma-NiCrAlTi, TiC, alpha-Ti, and small fine CaF2 particles. Average micro-hardness of the coating is 1023 HV0.3, which is about three-factor higher than that of Ti6Al4V substrate (380 HV0.3). The friction coefficient and wear rate of the coating decrease at all test temperatures to different extents with respect to the substrate. The improvement in wear resistance is believed to be the combined effects of the gamma-NiCrAlTi solid solution, the dominating anti-wear capabilities of the reinforced TiC carbides, and the self-lubricating property of CaF2.
机译：采用激光沉积法在Ti6Al4V合金上制备了新型的Ni基固溶体（γ-NiCrAlTi）/ TiC /α-Ti/ CaF2高温自润滑耐磨复合涂层。系统地研究了涂层的微观结构，显微硬度，磨损行为和对位效应。可以看出，涂层主要由γ-NiCrAlTi，TiC，α-Ti和小的细CaF2颗粒组成。涂层的平均显微硬度为1023 HV0.3，比Ti6Al4V基材（380 HV0.3）高约三倍。涂层的摩擦系数和磨损率在所有测试温度下相对于基材都有不同程度的降低。耐磨性的提高被认为是γ-NiCrAlTi固溶体，增强的TiC碳化物的主要抗磨能力以及CaF2的自润滑性能的综合作用。

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