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

武汉理工大学学报-材料科学版(英文版), 2012, 27(2): 394-397. doi: 10.1007/s11595-012-0472-9

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

3.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

4.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

5.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

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

WANG Hongfu ^1, , WANG Huachang ^2, , KOU Bingtou ^3, , CHANG Zheng ^4, , WANG Junyuan ^5,

1.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

3.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

4.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China

5.School of Mechanical Engineering and Automation, North University of China, Taiyuan 030051, China

Keywords： thermal diffusion

Vanadium pentoxide,borax,boron carbide and sodium fluoride were used to grow vanadium carbide coating on surface of Crl2 steel at 950 ℃ by TD process.The coating of vanadium carbide (VC) extended the serve-life period of Crl2 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.

参考文献

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

参考文献