文献类型：期刊文献

英文题名：Reactive wetting and interfacial reaction mechanism of ZrC-SiC ceramic and Ag-Zr filler

作者：Shi, Junmiao[1];Wang, Qian[2];Tian, Fuqiang[1];Zhang, Lixia[3];Zhang, Xiancheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[2]Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan;[3]Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

年份：2021

卷号：41

期号：15

起止页码：7464

外文期刊名：JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

收录：;EI(收录号：20213410804313);WOS:【SCI-EXPANDED(收录号:WOS:000705159100005)】；

基金：This study was supported by the National Natural ScienceFoundations of China (No. 52005410) , Natural Science Basic Research Program of Shaanxi (Program No. 2020JQ-190) and the China Post-doctoral Science Foundation (No. 2019TQ0263, No. 2020M683560) .

语种：英文

外文关键词：Wetting behavior; Interfacial reaction; Microstructure; Wetting mechanism

摘要：In this study, the isotherm wetting and spreading behaviors of molten Ag-Zr filler on ZrC-SiC ceramic surface was investigated using a sessile drop method in vacuum. The effect of Zr content in Ag-Zr filler on the wetting behavior was studied, and the wetting mechanism was revealed in details. The results showed that the contact angle of Ag-Zr filler on the ZrC-SiC surface decreased from 140 degrees to 20 degrees with the Zr content varied from 0 to 8 wt.%, and the Zr was the key factor to the wetting process. The wetting dynamic analysis illustrated that the interfacial reaction controlled the wetting of Ag-Zr filler on the ZrC-SiC surface. Due to the Zr activity difference at Ag-Zr/ZrC interface, the ZrC released C into Ag-Zr filler, and reacted with Zr to form new-born ZrC with higher Zr content. The formation of the new-born ZrC promoted wetting and spreading of Ag-Zr filler on ZrC-SiC surface.