Fe-WC surface composites produced by reactive cast-infiltration  

作　　者：Daxin ZENG, Janyong LIU, Yuanhao ZHANG (Department of Materials Engineering, Hubei Automotive Industries Institute, Shiyan 442002, Hubei, P. R. China) 

出　　处：《China Foundry》2004年第2期138-140,共3页中国铸造（英文版）

摘　　要：The reactive cast-infiltration technique was used to produce an Fe-WC surface composite layer on an iron casting, in which the WC particulates were formed in situ from a reaction of W with C. The structure and phase construction of the surface composite were evaluated by using X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray (EDS), etc. An Fe-WC surface composite layer with a volume fraction of WC particles up to 30％ and particle size in the range 10～30 μm was successfully produced. Abrasive resistance test results show that the Fe-WC surface composite layer possesses great abrasive resistance.1 .Introduction Metal-matrix composites (MMCs) have developed since they first appeared in the 1960s. However, the high cost of current monolithic MMCs hampers their production on a large industrial cale From the point of view of their application, the service life of components usually relies on their surface properties. It is

关 键 词：reactive cast-infiltration Fe-WC surface composite casting microstructure abrasive resistance 

分 类 号：TG244[金属学及工艺—铸造]