Composition Variation of Borax Salt during the Process of Vanadizing by Thermal Diffusion

被引：4
|
作者：
Wang Hongfu [1 ]
Wang Huachang [2 ]
Kou Bingtou [1 ]
Chang Zheng [2 ]
Wang Junyuan [1 ]
机构：
[1] N Univ China, Sch Mech Engn & Automat, Taiyuan 030051, Peoples R China
[2] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2012年 / 27卷 / 02期
基金：
中国国家自然科学基金;
关键词：
thermal diffusion; borax salt bath; vanadizing; FeSiRe23; CARBIDE COATING GROWTH; STEEL SUBSTRATE; BATH;
D O I：
10.1007/s11595-012-0472-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Vanadium pentoxide, borax, boron carbide and sodium fluoride were used to grow vanadium carbide coating on surface of Cr12 steel at 950 degrees C by TD process. The coating of vanadium carbide (VC) extended the serve-life period of Cr12 steel as punching die. Kinetics of vanadium carbide coating growth was brought forward and verified by comparison of the mathematical model with the experimental results. The thickness of coating was illustrated by SEM. The chemical constituent of coating and remnants were tested by X-ray diffraction (XRD) and X-ray energy dispersive spectroscopy (EDS). To increase the thickness, rare earth silicon powder (FeSiRe23) was added to the borax salt bath. The analysis of XRD revealed that FeSiRe23 increased the depth of vanadium car-bide coating as reducing agent and catalysis.
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页码：394 / 397
页数：4
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