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OALib Journal期刊
ISSN: 2333-9721
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碳钢表面燃烧合成网络结构Cr_3C_2-WC陶瓷复合涂层的相组成与性能
Abstract:
利用燃烧合成技术,在普通碳钢表面原位自生Cr3C2-WC网络结构陶瓷复合涂层。通过X射线衍射仪、扫描电子显微镜、能谱仪和显微硬度计等测试手段对涂层中的网络结构陶瓷增强相的组织形貌、物相组成、化学成分及力学性能等进行了表征。结果表明涂层由Cr3C2,WC,FeNi3,σ-FeCr和δ-CrNi等组成,Cr3C2-WC网络结构增强相由过饱和固溶体共晶析出。涂层与基体间的结合为冶金结合;表面涂层厚度约为2.0mm,显微硬度约为7.2GPa。制备的表面复合材料的硬度高于基体,改性效果明显。
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