基于电沉积镍的低碳钢表面合金化扩散研究  

Study on Surface Alloying Diffusion of Low Carbon Steel Based on Electrodeposited Nickel

作　　者：赵帅[1] 孙建春[1] 周文[1] 兰伟[1] ZHAO Shuai;SUN Jianchun;ZHOU Wen;LAN Wei(School of Metallurgy and Materials Engineering, Chongqing University Science and Technology, Chongqing 401331, China)

机构地区：[1]重庆科技学院冶金与材料工程学院

出　　处：《热加工工艺》2018年第10期137-139,143,共4页Hot Working Technology

基　　金：重庆科技学院校内科研基金(CK2015Z18);重庆科技学院研究生科技创新(YKJCX2015040)

摘　　要：在低碳钢表面采用电镀镍技术,通过控制热处理温度的变化,制备了一系列铁镍合金扩散层。利用X射线衍射和扫描电镜观察扩散层界面互扩散区的微观形貌、组成和扩散行为。结合误差函数法研究扩散区内元素的互扩散系数。结果表明：铁镍合金的互扩散系数随着扩散温度的升高而增大。在650℃时,扩散层厚度为18.59μm,Ni在Fe中扩散系数为9.36×10^-16m^2/s。A series of diffusion layers of Fe-Ni alloy were prepared by controlling the change of heat treatment temperature on the surface of low carbon steel by electroplating nickel technique. The morphology, composition and diffusion behavior of the interdiffusion region in the diffusion layers were observed by X-ray diffraction and scanning electron microscopy. The interdiffusion coefficients of the elements in the diffusion region were studied by error function method. The results show that the interdiffusion coefficient of Fe/Ni alloy increases with the diffusion temperature increasing. The diffusion layer thickness is 18.59 μm and the diffusivity of nickel in iron is 9.36×10^-16m^2/s at 650℃.

关 键 词：热处理 界面 扩散层 扩散系数 

分 类 号：TG174.44[金属学及工艺—金属表面处理]