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研究了添加Mn、Mo、Ti合金元素对激光熔覆Fe Ni Cr+60%WC复合熔覆涂层微观组织和磁性能的影响。利用扫描电子显微镜(SEM),能谱仪(EDS),X射线衍射仪(XRD)对熔覆层进行微观组织、成分及物相分析。利用振动样品磁强计(VSM)对熔覆层的磁性能进行测试。研究结果表明激光熔覆WC-Fe Ni Cr复合涂层与基体具有良好冶金结合,表面无裂纹、气孔等缺陷。Mn、Mo、Ti合金元素的加入,使得复合涂层冶金反应及组织形貌更加复杂,Fe、Ni、Cr元素之间存在相互作用并与WC之间存在互熔扩散,并生成了新的无磁相Ti C,Mo C,Fe-Cr(σ相),Cr0.19Fe0.7Ni0.11,而且Mn、Mo、Ti合金元素的加入使复合涂层相对磁导率显著降低,复合涂层磁性能具有较强的稳定性。
The effects of adding Mn, Mo and Ti alloying elements on the microstructure and magnetic properties of laser cladding Fe Ni Cr + 60% WC composite cladding coatings were investigated. The microstructure, composition and phase analysis of the cladding layer were analyzed by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS) and X-ray diffraction (XRD) The magnetic properties of the cladding layer were tested using a vibrating sample magnetometer (VSM). The results show that the laser cladding WC-Fe Ni Cr composite coating has good metallurgical bonding with the substrate, no cracks and pores on the surface. The addition of Mn, Mo and Ti alloying elements makes the metallurgical reaction and microstructure of the composite coating more complex, with the interaction of Fe, Ni and Cr elements and the mutual diffusion with WC and the formation of new The magnetic phase Ti C, Mo C, Fe-Cr (σ phase), Cr0.19Fe0.7Ni0.11, and the addition of Mn, Mo, Ti alloying elements significantly decreased the relative permeability of the composite coating. The magnetic properties of the composite coating With strong stability.