Investigation of the microstructure of diffusion coatings of carbon steel obtained by simultaneous diffusion saturation with boron, chromium and titanium

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Guriev, A.M.^1^2 ; Ivanov, S.G.^3 ; Guriev, M.A.^2^3 ; Chernykh, E.V.^2 ; Mei, S.Q.^1^4

Wuhan Textile University, FangZhi Road 1, Wuhan

430073, China^1

I.I. Polzunov Altai State Technical University, Lenin Pr. 46, Barnaul

656038, Russia^2

LLC Hardening Technologies, Barnaul

656063, Russia^3

Hubei Key Laboratory of Digital Textile Equipment, Wuhan

430073, China^4

关键词: Boride layers;    Boron diffusions;    Diffusion process;    Diffusion saturation;    High durability;    Saturation parameters;    Steel 1045;    Three component;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012077/pdf
DOI  :  10.1088/1757-899X/479/1/012077

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The mechanism of boron diffusion under conditions of simultaneous saturation of steels with boron, chromium and titanium are poorly represented in the literature. It is noted that exactly three-component saturation with boron, chromium and titanium allows to obtain diffusion coatings with unique properties. The microhardness of such coatings can achieve 5000 HV, which corresponds to the microhardness of boron carbide B4C. In addition, such coatings, depending on the saturation parameters and the saturable material, can also show high durability values. The microstructure of the diffusion coatings on carbon steels Grade C and steel 1045 has been studied. It has been shown that during the simultaneous diffusion of boron, chromium and titanium under the boride layer additional perlite volumes are formed. The perlite that existed in the steel before the diffusion processes, as a result of diffusion, is fragmented.