真空感应熔覆高碳铬铁粉/铁基自熔合金的应用研究  

Application Research of Vacuum Induction Cladding with Highcarbon Ferrochrome Powder/Fe-based Self-fluxing Alloy

作　　者：江艇[1] 林国标[2] 

机构地区：[1]北京中冶设备研究设计总院有限公司,北京100029 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《山西冶金》2015年第4期20-22,41,共4页Shanxi Metallurgy

摘　　要：以高碳铬铁粉和铁基合金粉末作为涂覆粉末,通过真空感应熔覆技术在45号钢表面获得具有较高硬度的复合涂层,并实现熔覆层与基体材料良好的冶金结合。通过宏观洛氏硬度测试、微观显微硬度测试、X射线衍射分析、显微组织分析、能谱分析进一步分析复合材料的组织结构和性能指标。分析结果显示:熔覆层的表面洛氏硬度HRC能够达到63以上,由熔覆层向基体材料内部显微硬度呈梯度分布;硬质增强相主要是Cr7C3、Cr2B等物相组成,分布在熔覆层和过渡区中,提高了涂层硬度。With high-carbon ferrochrome powder and Fe-based self-fluxing alloy as the coating powder, composite coating with high hardnes on 45 steel surface by vacuum induction cladding technology is obtained, and good metallurgical bonding between the cladding layer and the substrate materials is achieved. Through macro Rockwell hardness test, micro-hardness measurement, X-ray diffraction（XRD） analysis, microstructure analysis, energy spectrum analysis, the organizational structure and performance of the composite material are analyzed. Results show that the surface Rockwell hardness of cladding layer is high up to HRC63, and the micro-hardness is gradient distribution from the surface cladding layer to the substrate material internal, the hard reinforcing phase is mainly composition of Cr7C3 and Cr2B, and their distribution in the cladding layer and the transition zone increases the coating hardness.

关 键 词：真空感应熔覆 高碳铬铁粉 铁基自熔合金 冶金结合 

分 类 号：TG174[金属学及工艺—金属表面处理]