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首次给出了Mo+C和W+C双离子注入H13钢合成优化表面层机理的研究结果,包括表面薄碳膜和弥散硬化层的形成。电镜中观察到这些离子注入时晶粒细化和密集位错的出现,同时在晶界间析出相以MoC为主,在晶界内析出相则以Fe2MoC和MoC为主;这将使晶界强化和位错强化效果增强。X射线衍射分析表明,注入层中出现了弥散的FE2C,Fe5C2,FeMo,Fe3M02,MoC,MoCx,Mo2C,Fe2w,Fe7W6,WC和W2C相。由于这些弥散相的存在使注入层硬度和抗磨损效果均有明显的提高。首次用俄歇分析观察到表面有一层碳膜存在,这将引起表面的自润滑效果。
For the first time, the research results on the synthesis and optimization of the surface layer of H13 steel with Mo + C and W + C double ion implantation are presented, including the formation of surface thin carbon film and diffusion hardening layer. Electron microscopy showed the grain refinement and dense dislocation during the ion implantation. At the same time, the precipitated phase was dominated by MoC in the grain boundaries, while the precipitated phases were dominated by Fe2MoC and MoC in the grain boundaries. Enhancement and enhanced dislocation enhancement. X-ray diffraction analysis showed that dispersed FE2C, Fe5C2, FeMo, Fe3M02, MoC, MoCx, Mo2C, Fe2w, Fe7W6, WC and W2C phases appeared in the implanted layer. Due to the presence of these dispersed phases, the hardness and wear resistance of the implanted layer are significantly improved. For the first time, Auger analysis revealed the presence of a carbon film on the surface, which caused the self-lubricating effect of the surface.