Diffusion Mechanism of Single Plasma Cr-Ni Surface Alloying on Q195 Steel

被引：0

作者：

Gao Yuan ^{[1
]}

Yuan Lin ^{[1
]}

Chen Xuannan ^{[1
]}

Zhang Wei ^{[1
]}

Li Bing ^{[1
]}

Huang Xuefeng ^{[1
]}

机构：

[1] Guilin Univ Elect Technol, Guilin 541004, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷

关键词：

Cr-Ni surface alloying process; diffusion coefficient; diffusion activation energy; vacancy concentration;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cr-Ni alloying layer was formed on Q195 steel surface using single pulse power supply. The morphology, the surface phase composition and the contents of Cr and Ni were studied. Diffusion coefficient, diffusion activation energy and surface vacancy concentration were calculated by curve of Cr-Ni alloying layer fitted by MATLAB. Results show that as the thickness of Cr-Ni co-diffusion layer increases, diffusion activation energy of alloying elements is increased while diffusion velocity is slowed down and the contents of alloying elements are decreased. Under the same conditions, vacancy concentration in plasma surface alloying process is 2 similar to 3 orders of magnitude higher than that in plain surface alloying process.

引用

页码：272 / 274

页数：3