激光熔覆TiC/金刚石粉末在低碳钢表面改性中的应用研究
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摘要
在低碳钢基底表面激光熔覆TiC/金刚石粉末,并利用扫描电镜、能量仪、硬度仪和磨损试验机对TiC/金刚石粉末覆层进行显微组织和力学性能分析。结果表明:TiC/金刚石粉末覆层可与低碳钢基底形成良好的冶金结合,均匀的分散于碳钢表面。在TiC粉末中添加1.5%的金刚石粉末能较好的提升熔覆层的硬度与抗磨能力,且在磨损的过程中,由于金刚石粉末能够自动的填补磨损表面中的微小缝隙而不会形成磨粒而刮损表面,从而提高覆层的耐摩擦性。
TiC/diamond powder was laser cladded on low carbon steel substrate surface. The microstructure and mechanical properties of TiC/diamond powder coating were analyzed by SEM, EDS, hardness tester and wear tester. The results show that TiC/diamond powder coatings can form a good metallurgical bonding with the low carbon steel substrate,which is uniformly dispersed on the surface of carbon steel. By adding 1.5% diamond powder into TiC powder, the hardness and abrasion resistance of the cladding layer improve. In the process of wear, because the diamond powder can automatically fill the small gap of wear surface without the formation of abrasive scratch surface, the antifriction performance of the coating improves.
TiC/diamond powder was laser cladded on low carbon steel substrate surface. The microstructure and mechanical properties of TiC/diamond powder coating were analyzed by SEM, EDS, hardness tester and wear tester. The results show that TiC/diamond powder coatings can form a good metallurgical bonding with the low carbon steel substrate,which is uniformly dispersed on the surface of carbon steel. By adding 1.5% diamond powder into TiC powder, the hardness and abrasion resistance of the cladding layer improve. In the process of wear, because the diamond powder can automatically fill the small gap of wear surface without the formation of abrasive scratch surface, the antifriction performance of the coating improves.
引文
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