低合金钢空心阴极放电离子渗氮研究  

Surface modification of low-alloy steel by plasma nitriding with hollow cathode discharge

作　　者：李杨[1] 王亮[2] 赵相金[1] 卢杨[1] 杨龙飞[1] 

机构地区：[1]烟台大学环境与材料工程学院,山东烟台264005 [2]大连海事大学交通运输装备与海洋工程学院,辽宁大连116026

出　　处：《大连海事大学学报》2014年第3期125-127,共3页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(51179017;51301149)

摘　　要：针对传统直流离子渗氮中存在的问题,采用空心阴极放电渗氮化对低合金钢进行表面改性处理.结果表明:含氮气体经过空心阴极放电电离可提供高浓度的氮离子、氮原子等活性物质,在低合金钢表面形成高硬度的氮化层,同时,避免了传统辉光放电氮化技术中存在的边缘效应等问题.To overcome the common problems associated with the conventional DC plasma nitriding , this paper presented the technology of plasma nitriding with hollow cathode dis-charge.The nitriding of low alloy steel was carried out at cathode potential in a space enclosed by an active screen which consisted of two cylinders with different diameter .Re-sults indicate that the plasma formed on the bilayer active screen, which contains a mixture of ions , electrons and other active nitriding species .The low alloy steel is effectively nitri-ded in the plasma atmosphere enclosed by bilayer active screen.Meanwhile the edge effect associated with convention-al plasma nitriding can be completely avoided .

关 键 词：低合金钢 离子渗氮 空心阴极放电 

分 类 号：TG156.8[金属学及工艺—热处理]