赖玉军,许云华,叶芳霞,王崇

• 1:西安建筑科技大学机电工程学院
• 2:西安理工大学材料科学与工程学院

摘要(Abstract)：

采用铸渗—热处理法将纯铬板与TH300进行原位反应制备了(Fe,Cr)7C3/Fe表面复合材料。应用XRD、SEM和显微硬度计对不同保温时间所得的表面复合材料进行物相、显微组织和显微硬度进行了分析。结果表明:随着保温时间的增加,显微组织逐渐由网状的(Fe,Cr)3C型碳化物逐渐转变为颗粒状和板条状的(Fe,Cr)7C3型碳化物。当1185℃保温2 h后在铬板与基体结合处生成了整块状致密(Fe,Cr)7C3陶瓷层,其体积分数达90%以上,当1185℃保温4 h后整块状致密(Fe,Cr)7C3陶瓷层消失。(Fe,Cr)7C3/Fe表面复合材料的显微硬度值为1478 HV0.1,约是灰铸铁基体微硬度的5倍。

关键词(KeyWords)： 表面复合材料;原位生成;显微组织;显微硬度

Abstract:

Keywords:

基金项目(Foundation): 国家科技计划项目对俄科技合作专项(2014DFR50630);; 国家高技术研究发展计划(863计划)项目(2013AA031803);; 国家自然科学基金(51374169);; 陕西省科学技术研究发展计划项目工业攻关计划(2014K08-13)

作者(Author): 赖玉军,许云华,叶芳霞,王崇

DOI: 10.13289/j.issn.1009-6264.2015.10.004

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