奥氏体不锈钢表面双辉等离子渗锆的动力学  

Kinetics of Double-glow Plasma Zr Surface Alloying on Austenite Stainless Steel

作　　者：蔡航伟[1] 高原[1] 马志康[1] 王成磊[1] 

机构地区：[1]桂林电子科技大学材料科学与工程学院,桂林541004

出　　处：《机械工程材料》2015年第1期102-106,共5页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51264007);国家自然科学基金青年基金资助项目(51201043);广西自然科学基金重点资助项目(2010GXNSFD013008);广西科学研究与技术开发科技攻关计划项目(桂科攻12118020-2-2-1);广西信息材料重点实验室项目(桂科能1210908-10-Z)

摘　　要：利用双辉等离子渗金属技术在0Cr18Ni9Ti奥氏体不锈钢表面制备了一层均匀、致密、呈良好冶金结合的渗锆合金层,并对1 060℃下的渗锆动力学进行了研究。结果表明：随着距锆合金层表面距离的增加,锆元素的含量呈梯度递减,扩散系数逐渐减小,而扩散激活能逐步增大;在1 060℃采用双辉等离子技术渗锆时,渗锆合金层表层的空位密度为2.945×（10^12~10^13）cm^-2,与相同温度下采用常规渗金属工艺相比,提高了1~2个数量级。A continuous and compact Zr-alloyed layer with good metallurgical bonding was prepared on0Cr18Ni9 Ti austenite stainless steel substrate surface by double-glow plasma surface alloying technology,and the kinetics of double-glow plasma Zr surface alloying at 1 060 ℃ was studied.The results show that,increasing the distance from the Zr-alloyed layer surface,the Zr element content exhibited a graded decrease trend and the diffusion coefficient decreased gradually,while diffusion activation energy increased gradually.Vacancy density of the Zralloyed layer surface was approximately 2.945×（10^12-10^13）cm^-2,which increased 1to 2orders of magnitude comparing with that by conventional surface alloying technology at same temperature.

关 键 词：双辉等离子渗金属技术 渗锆合金层 离子轰击 动力学 空位密度 

分 类 号：TG156.8[金属学及工艺—热处理]