TiN复合渗镀层摩擦磨损性能的研究

介绍了一种同时利用等离子尖端放电、空心阴极效应和反应气相沉积技术,在碳钢表面形成具有扩散层和沉积层的TiN复合渗镀层新工艺技术。对TiN复合渗镀层、TiN复合渗镀层+TiN薄膜(PVD法)以及在碳钢基体表面直接沉积TiN薄膜(PVD法)这三种工艺试样的表面形貌、硬度、摩擦磨损进行了对比研究。结果表明TiN复合渗镀层+TiN薄膜,其表面形貌是较为均匀、致密、细小的胞状物组织,平均硬度达到2500HV左右,磨损曲线最平稳、平均摩擦系数最小,耐磨性比较好。复合渗镀层厚度可达十几微米以上,并且成分、硬度、结构均呈梯度分布,与基体是冶金结合,结合力非常好,所以其磨痕最浅。

Study of Friction and Abrasion Properties with TiN Multi-permeation Layer

A new technique of TiN multi-permeation layers composed of diffusion and deposition layers on the surface of carbon steel by using plasma point discharge, hollow cathode effect and reactive vapor deposition at the same time are introduced. On the surface appearance, hardness and friction-abrasion of these samples of TiN multi-permeating, TiN multi-permeating + TiN film (PVD) and directly depositing TiN film (PVD) on the carbon steel are subsequently comparative researched. The results show that the surface appearance of TiN multi-permeation layer + TiN film is very uniform, compact and fine cellular structure and average hardness reached about HV2500 and the abrasion curve is most stable with least mean friction coefficient and better wear resistance. Secondly the thickness of multi-permeation layers is above 10μm, and all the composition, hardness and structure are graded distribution. The multi-permeation layers are metallurgical bonding with samples with better cohesion force and shallowest abrasion crack.