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以高碳铬铁、钼铁、中碳锰铁、钒铁、石墨及还原铁粉等为预制合金粉末,采用氩弧熔覆技术,在基体表面制备涂层。借助光学显微镜、显微硬度计以及磨粒磨损试验机等实验仪器对耐磨涂层的组织和耐磨性能进行研究分析。结果表明:涂层与基体的结合强度大,为冶金结合,且无气孔和裂纹等缺陷出现。生成的碳化物M__3弥散分布在涂层中,有效提高了涂层的硬度与耐磨性,其相对耐磨性是基体的13倍左右。
High-carbon ferrochromium, ferromolybdenum, carbon ferromanganese, vanadium iron, graphite and reduced iron powder as prefabricated alloy powder, argon arc cladding technology, the preparation of the coating on the substrate surface. By means of optical microscope, microhardness tester and abrasive wear tester, the microstructure and wear resistance of the wear-resistant coating were studied and analyzed. The results show that the bonding strength between the coating and the substrate is large, metallurgical bonding occurs, and defects such as no pores and cracks appear. The resulting carbides M__3 dispersedly distributed in the coating, effectively improve the hardness and wear resistance of the coating, the relative wear resistance is about 13 times the matrix.