Low-temperature metal-to-alumina direct bonding process utilizing redox reaction between silver oxide and organic agent

被引：25

作者：

Asama, Koji ^{[1
]}

Matsuda, Tomoki ^{[1
]}

Ogura, Tomo ^{[1
]}

Sano, Tomokazu ^{[1
]}

Takahashi, Makoto ^{[2
]}

Hirose, Akio ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Joining & Welding Res Inst, 11-1 Mihogaoka, Ibaraki, Osaka 5670047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 702卷

关键词：

Low-temperature bonding; Silver nanostructures; Sintering; Redox reaction; Alumina; Microstructure; THERMAL-DECOMPOSITION; SURFACE CHARACTERIZATION; DIFFUSION; ADHESION; ADSORPTION; INTERFACE; EVOLUTION; FEATURES;

D O I：

10.1016/j.msea.2017.07.034

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the present study, low temperature bonding of gold-to-alumina was investigated by the in situ generation of silver via a redox reaction between silver oxide microparticles and diethylene glycol. The shear strength of gold to-alumina joints with a silver layer bonded at 400 degrees C was comparable to that of conventional methods that require a high bonding temperature. Microstructural observations revealed that the adhesion of silver nano particles, which are formed by redox reaction, on an alumina surface improves the strength leading to the fracture of alumina. High-resolution transmission electron microscopy and energy dispersive spectroscopy analysis showed the direct bonding between silver and alumina at the interface without diffusion or formation of a reaction layer. Additionally, x-ray photoelectron spectroscopy analysis at the interface showed that the bonding of silver and alumina could be attributed to the silver-oxygen bond, which revealed that silver ions generated during the redox reaction could contribute to the bond formation. Further, molecular dynamics simulation confirmed that the presence of silver ions promotes the formation of an initial silver layer, which plays a role in bonding silver nanoparticles to an alumina surface. As mentioned above, it was found that a bonding method utilizing the reduction of silver oxide by reducing agent involves a significant, unique process that realizes metal-to-alumina bonding at a low temperature.

引用

页码：398 / 405

页数：8

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