Vanadium Carbide Coating Growth on Die Steel Substrate in Borax Salt Bath

武汉理工大学学报-材料科学版(英文版), 2010, 25(4): 600-603. doi: 10.1007/s11595-010-0052-9

^1, , ^2, , ^3,

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

基金项目: the National Natural Science Foundation of China(50675165) the National Key Technology R&D Program(2006BAF02A29)

Vanadium Carbide Coating Growth on Die Steel Substrate in Borax Salt Bath

WANG Hongfu ^1, , WANG Huachang ^2, , PAN Chenggang ^3,

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

Keywords： vanadium carbide coating

Vanadium pentoxide,borax,boron carbide and sodium fluoride were used to grow vanadium carbide coating on die steel(Cr12,Cr12MoV) surface at 950 ℃ by TD process,which extended the life period of Cr12 and Cr12MoV 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 XRD.To increase the thickness,rare earths (FeSiRe23) were added to the borax salt bath.The electronic probe microanalysis (EPMA) revealed that the addition of rare earths could decrease carbon concentration in the coating and increase the depth of vanadium carbide coating.

参考文献

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Vanadium Carbide Coating Growth on Die Steel Substrate in Borax Salt Bath

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