Carbothermal reduction reaction enhanced wettability and brazing strength of AgCuTi-SiO2f/SiO2 system

被引：12

作者：

Sun, Zhan ^{[1
]}

Cao, Yu ^{[1
]}

Zhang, Lixia ^{[1
]}

Feng, Jicai ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2020年 / 40卷 / 04期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Carbothermal reduction reaction; Wetting; Interfacial reaction; Pyrolytic; carbon; Shear strength; INTERFACIAL MICROSTRUCTURE; MECHANICAL-PROPERTIES; SIO2F/SIO2; COMPOSITE; SILICON-CARBIDE; AGCUTI; CERAMICS; GRAPHENE; KINETICS; NICKEL; ALLOYS;

D O I：

10.1016/j.jeurceramsoc.2019.11.067

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A carbothermal reduction reaction (CRR) approach was developed in this research to tailor the surface phase structure of the SiO2f/SiO2 composites with high chemical reactivity to replace the original inert surface. Results show that SiC can form after CRR treatments. For AgCuTi-SiO2f/SiO2 wetting interfaces, TiC and residual pyrolytic carbon layer can be found inside the reaction layer, which was the key, promoting the wettability of the AgCuTi-SiO2f/SiO2 system. The contact angle of the AgCuTi-SiO2f/SiO2 system dropped from 127 degrees to 43 degrees after the CRR treatments. The reliability of the bonded AgCuTi-SiO2f/SiO2 interface was also characterized by putting 3 different systems into comparison, i.e., the original AgCuTi-SiO2f/SiO2 system, the AgCuTi-SiO2f/SiO2 system with CRR treatments (SiC formation) and the AgCuTi-SiO2f/SiO2 system coated with powdered carbon (no SiC formation). The shear strength of the SiO2f/SiO2-AgCuTi-SiO2f/SiO2 system with CRR treatments was the highest, which was 3 times that of the other 2 brazing systems.

引用

页码：1488 / 1495

页数：8

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