摘要
用活性屏离子渗氮技术对处于阳极电位的AISI 316L奥氏体不锈钢进行低温渗氮处理,并将渗氮层的组织、形貌、相结构、显微硬度和耐蚀性能与在悬浮电位下处理的试样作对比。结果表明,奥氏体不锈钢在两种电位状态下渗氮处理获得了同样的、具有S相结构的单相硬化层。渗层不仅具有高的硬度,还有良好的耐蚀性能。在活性屏离子渗氮过程中,从活性屏上溅射下来的中性S相粒子起着氮载体的作用。活性屏空间粒子的撞击消除了不锈钢表面钝化膜对氮的阻隔作用。
AISI 316L austenitic stainless steel in anodic（zero） potential was nitirded at low temperature by active screen plasma nitriding,and compared the microstructures,morphologies,phase structures,microhardness and corrosion resistance of the nitrided layers with those of the samples nitrided in floating potential.Experimental results show that AS nitriding in both electric potentials produced the same hardening layer of S phase structure,which exhibits not only high mircorhardness but also good corrosion resistance.The neutral particles sputtering from the active screen play the role of nitrogen mass transfer in the AS plasma nitriding.Particles in the active screen space can remove the passivated film hindering the nitrogen penetration.
出处
《青岛科技大学学报（自然科学版）》
CAS
2007年第5期431-434,共4页
Journal of Qingdao University of Science and Technology:Natural Science Edition
关键词
奥氏体不锈钢
活性屏离子渗氮
阳极电位
悬浮电位
austentic stainless steel
active screen plasma nitriding（ASPN）
anodic potential
floating potential
作者简介
赵程（1952～），男，教授．
