电接触强化对火焰喷涂Ni60-WC涂层及40Cr基材组织及性能的影响
发布时间：2018-12-26 14:39
【摘要】：在40Cr基材上利用氧-乙炔火焰喷涂镍基碳化钨(Ni60-WC)复合涂层后,对涂层进行电接触强化。通过金相显微镜观察电接触强化前后涂层截面的显微组织形貌,利用维氏显微硬度仪分析涂层截面的显微硬度分布,并通过SEM面扫描分析涂层与基材的钨元素分布。结果表明,电接触强化工艺能够显著提高涂层质量及硬度,并使涂层与基材间形成良好的冶金结合。
[Abstract]:Ni-based tungsten carbide (Ni60-WC) composite coating was sprayed on 40Cr substrate by oxygen-acetylene flame spraying, and the coating was strengthened by electrical contact. The microstructure of the coating section before and after electrocontact hardening was observed by metallographic microscope. The microhardness distribution of the coating section was analyzed by Vickers microhardness instrument, and the tungsten distribution between the coating and the substrate was analyzed by SEM scanning. The results show that the process of electric contact strengthening can improve the quality and hardness of the coating and form a good metallurgical bond between the coating and the substrate.
【作者单位】： 东华大学机械工程学院纺织装备教育部工程研究中心;
【基金】：上海市重点学科建设项目(B602)
【分类号】：TG174.4
[Abstract]:Ni-based tungsten carbide (Ni60-WC) composite coating was sprayed on 40Cr substrate by oxygen-acetylene flame spraying, and the coating was strengthened by electrical contact. The microstructure of the coating section before and after electrocontact hardening was observed by metallographic microscope. The microhardness distribution of the coating section was analyzed by Vickers microhardness instrument, and the tungsten distribution between the coating and the substrate was analyzed by SEM scanning. The results show that the process of electric contact strengthening can improve the quality and hardness of the coating and form a good metallurgical bond between the coating and the substrate.
【作者单位】： 东华大学机械工程学院纺织装备教育部工程研究中心;
【基金】：上海市重点学科建设项目(B602)
【分类号】：TG174.4
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