论文部分内容阅读
利用离子渗氮技术在LZ50钢表面进行渗氮处理。对渗氮层及其基体材料(LZ50钢)在干态不同角位移幅值下进行转动微动磨损试验,并采用扫描电子显微镜(SEM)、电子能谱仪(EDX)和轮廓仪对磨痕形貌进行了分析。结果表明:渗氮层虽没有改变LZ50钢的转动微动运行区域特性,但显著降低了基体的摩擦系数,并提高了基体的耐磨性。在部分滑移区,渗氮层损伤轻微,仅呈现零星点状压痕;滑移区,渗氮层的损伤主要表现为剥层和磨粒磨损。
Nitriding treatment on LZ50 steel by ion nitriding technology. The fretting wear test of nitrided layer and its base material (LZ50 steel) under different angular displacement of dry state was carried out. The wear marks on the wear scar were analyzed by scanning electron microscope (SEM), electron spectroscopy (EDX) and profile analyzer The morphology was analyzed. The results show that although the nitriding layer does not change the rotational fretting zone characteristics of LZ50 steel, but significantly reduces the friction coefficient of the matrix, and improve the wear resistance of the matrix. In the partial slip zone, the nitrided layer is slightly damaged, showing only spot-like indentations. The damage in the sliding zone and the nitrided layer is mainly manifested as delamination and abrasive wear.