Wetting Behavior of Graphite and CFC Composites by Cu-Ti Compacts

作     者：王珂 毛样武 DENG Quanrong NIE Dunwei MOMBELLO Domenico 

作者机构：Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of Technology Department of Applied Science and Technology Politecnico di Torino 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2018年第33卷第1期

页      面：35-42页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Funded by the National Natural Science Foundation of China(No.51304148) the Scientific Research Project under Hubei Provincial Department of Education(No.D20131504) Graduate Education Innovation Fund of Wuhan Institute of Technology(No.CX2016008) 

主　　题：joining, wetting, interfaces, wetting carbon materials 

摘      要：The wetting behavior of Cu-Ti powder compacts with 22 wt %Ti and 50 wt %Ti on carbon materials, including graphite and carbon fiber reinforced carbon composites（CFC）, has been investigated in a vacuum using the sessile drop method. The equilibrium contact angles of Cu-22Ti（containing 22 wt%Ti） on the graphite and the CFC substrates at 1 253 K are 32 o and 26 o, respectively, whereas the equilibrium contact angle of 9° is obtained for Cu-50Ti（containing 50 wt%Ti） on both the graphite and the CFC substrates at 1 303 *** analysis of the wetting samples shows that a thin TiC reaction layer is developed at the interfacial area and Ti-Cu intermetallic compounds are formed over the reaction layer. The investigation on the spreading kinetics of Cu-Ti compacts on carbon materials substrates at fixed temperatures reveals that the spreading is controlled by the interfacial reactions in the first stage and then by the diffusion of the active Ti from the drop bulk to the triple line in the later stage. The spreading is promoted by the intense reaction at higher Ti concentrations.