含铬碳钢梯度材料扩散行为的研究  

Study on Diffusion Behavior of Cr-containing Carbon Steel Graded Materials

作　　者：张宏博 张士宪 李慧蓉[1] 马涛 李欣 李孟星 李运刚 ZHANG Hongbo;ZHANG Shixian;LI Huirong;MA Tao;LI Xin;LI Mengxing;LI Yungang(School of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063009,China;Hebei College of Industry and Technology,Shij iazhuang 050091,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063009 [2]河北工业职业技术学院,河北石家庄050091

出　　处：《热加工工艺》2018年第22期124-127,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51474088);河北省自然科学基金项目(E2017209239);华北理工大学研究生创新项目(2018S02)

摘　　要：采用水溶液电沉积法在碳钢表面电镀铬并在高温下进行扩散退火处理,计算了铬在碳钢中的扩散系数,研究了铬在碳钢中的扩散行为。结果表明,铬在碳钢中的扩散系数范围为O.86~10^17~8.34×10^17m^2/s:扩散系数随退火温度升高而升高,碳钢中铬含量高的位置的扩散系统数降低。铬在碳钢中扩散激活能与铬含量无关,本实验条件下扩散激活能范围在73~89kJ/mol之间。The electroplating of chromium on carbon steel surface by aqueous solution electrodeposition method and diffusion annealing treatment at high temperature were carried out.The diffusion coefficient of chromium in carbon steel was calculated and the diffusion behavior of chromium in carbon steel was studied.The results show that the diffusion coefficient of chromium in carbon steel is 0.86~10^17-8.34×l0^17m^2/s.The diffusion coefficient increases with the increase of the annealing temperature and decreases with the increase of chromium content in carbon steel.The diffusion activation energy of chromium in carbon steel has nothing to do with the chromium content.Under this experimental condition,the diffusion activation energy is 73-89kJ/mol.

关 键 词：铬 碳钢 扩散系数 扩散激活能 

分 类 号：TG331[金属学及工艺—金属压力加工] TG161