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Cr12钢中性盐浴渗铬组织与性能研究
引用本文:李爱农,程丰伟,王秋领,王华昌.Cr12钢中性盐浴渗铬组织与性能研究[J].模具工业,2011,37(4):57-60.
作者姓名:李爱农  程丰伟  王秋领  王华昌
作者单位:武汉理工大学材料科学与工程学院,湖北武汉,430070
基金项目:国家自然科学基金资助项目(50675165)
摘    要:通过金相、扫描电子显微镜及其能谱仪分析研究了Cr12经中性盐浴TD渗铬后渗层的显微组织及元素线分布,并进行了硬度、磨损和抗氧化性能测试。试验结果表明:形成的铬的碳化物覆层连续、均匀、致密,与基体结合力强,有很高的硬度,表现出优异的耐磨及抗高温氧化性能,覆层与Cr12钢(900℃油冷+低温回火)基体之间的硬度过渡较为平缓,有利于在工模具中的实际应用。

关 键 词:Cr12钢  中性盐浴渗铬  碳化物覆层  组织性能

Microstructure and properties of Cr12 steel after neutral salt-bath chromizing
LI Ai-nong,CHENG Feng-wei,WANG Qiu-ling,WANG Hua-chang.Microstructure and properties of Cr12 steel after neutral salt-bath chromizing[J].Die & Mould Industry,2011,37(4):57-60.
Authors:LI Ai-nong  CHENG Feng-wei  WANG Qiu-ling  WANG Hua-chang
Affiliation:LI Ai-nong,CHENG Feng-wei,WANG Qiu-ling,WANG Hua-chang(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan,Hubei 430070,China)
Abstract:The microstructure and element linear distribution of Cr12 steel after neutral salt-bath chromizing were investigated by means of optical microscope,SEM and EDS;and the microhardness,wear resistance and oxidation resistance were tested.The results show that the chromic carbide coating is smooth,dense,uniform and well-bonded with Cr12 steel substrate,demonstrating high microhardness,excellent resistance to wear and high temperature oxidation.The microhardness gradient is gentle to some extent between the coa...
Keywords:Cr12 steel  neutral salt-bath chromizing  carbide coating  microstructure and properties  
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