168 / 2019-03-24 10:52:21

比表面积对316L奥氏体不锈钢低温辉光等离子渗氮力学性能的影响

全体主题 > 化学表面热处理、三束（激光束、电子束、等离子体）材料表面改性技术

摘 要:奥氏体不锈钢通过低温辉光等离子渗氮，获得含氮膨胀奥氏体渗氮层，即S相渗层，采用光学显微镜(OM)、扫描电镜(SEM)、能谱仪(EDS)、MVC-1000JMT1维氏显微硬度计、CFT-I型材料表面性能综合测试仪等，研究比表面积对316L奥氏体不锈钢低温辉光等离子渗氮力学性能的影响。结果表明：低温辉光等离子渗氮提高了316L奥氏体不锈钢表面硬度，硬度相比基体提高了4~5倍；低温辉光等离子渗氮提高了316L奥氏体不锈钢的摩擦磨损性能；比表面积越大，渗氮层越厚，表面硬度越高，摩擦系数越低，耐磨性越好。
Abstract: Austenitic stainless steel by low temperature glow plasma nitriding, obtain nitrogenous austenitic Nitriding layer, or S phase, using optical microscope (OM), scanning electron microscope (SEM), energy spectrometer (EDS), the MVC-1000-JMTI vickers microhardness tester, CFT-I Material surface performance comprehensive tester, studied the effect of specific surface area of 316L austenitic stainless steel mechanical properties under low temperature glow plasma nitriding. The results showed that the surface hardness of 316L austenitic stainless steel was increased by 4~5 times compared with that of the substrate. Low temperature glow plasma nitriding improves the friction and wear properties of 316L austenitic stainless steel. The larger the specific surface area, the thicker the nitriding layer, the higher the surface hardness, the lower the friction coefficient and the better the wear resistance.