高密度钨合金的表面滲碳处理研究

采用固体渗碳的方法对高密度钨合金进行了表面渗碳处理，通过显微观测、能谱分析、X射线检测等分析手段对渗层进行了检测。结果表明试样在固体渗碳剂中经过950℃保温5 h的渗碳处理，可以获得两层渗层组织。其中表层为170～200 μm深的W2C渗层，其显微硬度值由HV388提高到HV525，表明钨合金的表面渗碳可以有效地提高其表面硬度。次表层的显微组织表明该层中W颗粒没有明显的变化，碳化物主要存在于粘结相中。

Research on Surface Carburization of Tungsten Heavy Alloys

The tungsten heavy alloys were treated by solid surface carburization method and examined by microscope, SEM and X-ray, etc. The results show that the two carburization layers can be ob?tained at 950 C for 5 h In solid carburetant; the surface W2C layer with thickness of 170 pm to 200 /xm, hardness of HV388 to HV525 can improve surface hardness effectively; the tungsten grains in the secondary surface layer don’t change evidently, the carbide exists in the binding phase mainly.