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为了进一步提高低合金钢表面硬度、改善其耐磨性能,利用等离子体渗氮和物理气象沉积TiN硬质膜技术在SCM415低合金钢表面形成渗镀复合处理强化层.表面HV可达到2000,并且有良好的硬度梯度.利用金相、X射线衍射以及原子力显微镜研究复合处理层的微观组织和相结构,结果表明:TiN硬质膜与离子渗氮形成的化合物之间有非常好的界面结合,在干摩擦条件下磨损性能较低合金钢渗碳淬火、离子渗氮样品有显著改善.
In order to further improve the surface hardness of low-alloy steel and improve its wear resistance, a plasma enhanced composite layer was formed on the surface of SCM415 low-alloy steel by plasma nitriding and physical weather deposition TiN hard film technology.The surface HV can reach 2000, and Which has a good hardness gradient.The microstructure and phase structure of the composite treatment layer were studied by metallography, X-ray diffraction and atomic force microscopy.The results show that there is a very good interfacial bonding between the TiN hard film and the compound formed by ion nitriding, Under dry friction condition, the wear performance of alloy steel is lower than carburizing and quenching, and the samples of ion nitriding have a significant improvement.