Fabrication of W/Cu and Mo/Cu FGM as Plasma-facing Materials

作     者：Changchun Ge Zhangjian Zhou Jiangtao Li Xiang Liu Zhengyu Xu(Laboratory of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China)(Southwest Institute of Nuclear Physics, Chengdu 610041, China) 

作者机构：Laboratory of Special Ceramics and Powder Metallurgy University of Science and Technology Beijing Beijing 100083 China Southwest Institute of Nuclear Physics Chengdu 610041 China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2000年第14卷第2期

页      面：122-125页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 

主　　题：FGM plasma-facing material W/Cu and Mo/Cu alloy 

摘      要：W/Cu Functionally Graded Materials (FGM) was designed not only for reducing the thermal stress caused by the mismatch of thermal expansion coefficients, but also for combining the features of W, Mo - high plasma-erosion resistance and the advantages of Cu - high heat conductivity and ductility. Four different fabrication processes for W/Cu or Mo/Cu, including hot-pressing, Cu infiltration of sintered porosity-graded W skeleton, spark plasma sintering and plasma spraying, were investigated and compared. It was foundthat the hot-pressing process is difficult to keep the designed composition gradient, while the other three processes are successful in making W/Cu or Mo/Cu FGM. Meanwhile, microstructures and composition gradients are analyzed with SEM and EDAX.