摘要
为探讨钢在双辉离子渗金属过程中碳迁移的基本规律,在不同工艺条件下进行了离子渗金属试验研究．结果表明:渗入碳化物形成元素时,在渗层前沿形成脱碳层;双辉离子渗金属中的强脱碳现象是表面溅射和渗入碳化物形成元素共同作用的结果;脱碳层深度随阴极电压的增加、加热温度的提高和保温时间的延长而加深;脱碳层具有等轴晶和柱状晶2种显微组织形态．
The research of plasma surface alloying on carbon steels are processed under different technique conditions, for approaching the principle of carbon migration in steel by the double-glow discharge plasma surface alloying process. The results indicate that when carbon atoms diffuse in the surface, decarbonized layer forms in the frontier of the alloying layer; the strong decarbonization phenomenon in the double-glow discharge plasma surface alloying technology is the co-result of the surface sputtering effect and the diffusion of the carbon atoms. The decarbonized layer, which has two kinds of microstructure, namely, equal-axes crystal and icicle crystal, will be deeper with the increase of cathode voltage, the temperature, and the retaining time.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2005年第6期622-625,共4页
Journal of Beijing University of Technology
基金
北京市教育委员会科技发展计划资助项目(99CG-24)
关键词
离子渗金属
渗层
碳迁移
plasma surface alloying
alloying layer
carbon migration
