Skin effect of WC-8 wt% Co alloy by microwave sintering  

作　　者：Rui Bao Jian-Hong Yi Yuan-Dong Peng Feng-Xian Li Shang Li Shao-Yu Li 

机构地区：[1]School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China [2]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China

出　　处：《Rare Metals》2022年第4期1364-1368,共5页稀有金属（英文版）

基　　金：the National Natural Science Foundation of China(No.51274107)。

摘　　要：To investigate the microwave effect on the WC–Co alloys,WC–8 wt%Co alloy was fabricated by microwave sintering(MWS)in this paper.The results show that decarburization layer forms on the surface of the microwave-sintered samples.WC grain coarsening in the core area is strongly suppressed by the decarburization effect.In addition,the microstructure of the MWS-fabri-cated alloy was compared to that of the alloy sintered by vacuum sintering(VS).Microstructural investigations by transmission electron microscopy(TEM)and energy dis-persive spectroscopy(EDS)show that more tungsten(29.50 wt%)is dissolved in the cobalt binder phase in microwave-sintered alloy than that in the vacuum-sintered samples.Finally,the formation mechanism of the surface layer by skin effect was discussed.

关 键 词：Microwave sintering Tungsten carbide MICROSTRUCTURE SOLUBILITY Skin effect 

分 类 号：TG135.5[一般工业技术—材料科学与工程]