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.
出处
《机械工程材料》
CAS
CSCD
北大核心
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)
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
double-glow plasma surface alloying technology
Zr-alloyed layer
ion bombardment
kenetics
vacancy density
