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以高铬钢为基材,WC颗粒为增强颗粒,利用真空实型铸渗法(V-EPC)制备WC颗粒增强钢基表层复合材料,分析了相对厚度对制备表层复合材料厚度和组织的影响。通过光学显微镜、扫描电镜和显微硬度计等对表层复合材料进行了观察和分析。结果表明:利用V-EPC法能制备出WC颗粒增强钢基表层复合材料;随着相对厚度的增加,制备该复合材料的过渡层厚度逐渐增加,复合层厚度逐渐减小;WC颗粒与基体的结合强度逐渐增加。
Using high-chromium steel as base material and WC particles as reinforcing particles, WC particle reinforced steel-based surface composite material was prepared by vacuum solid infiltration method (V-EPC), and the influence of relative thickness on the thickness and structure of the prepared surface composite material . The surface composites were observed and analyzed by optical microscope, scanning electron microscope and microhardness tester. The results show that WC particle reinforced steel matrix composite can be prepared by V-EPC method. With the increase of relative thickness, the thickness of transitional layer increases and the thickness of composite layer decreases. The bonding strength gradually increased.