Ag microflake-reinforced nano-Ag paste with high mechanical reliability for high-temperature applications
Creators
- 1. Harbin Institute of Technology at Shenzhen, State Key Laboratory of Advanced Welding and Joining (China)
- 2. Harbin Institute of Technology, State Key Laboratory of Advanced Welding and Joining (China)
- 3. Korea Institute of Industrial Technology (Korea, Republic of)
Description
A silver (Ag) composite paste was fabricated based on Ag nanoparticles (NPs) and Ag microflakes (MFs). Robust interconnections were achieved after sintering in the temperature range of 150–225 °C. The shear strengths of the Ag MF + NP joints before and after thermal shock from − 50 to 150 °C for 1000 cycles were 155.7 ± 14.5 MPa and 78.4 ± 20.8 Mpa, respectively. The results show that the Ag composite paste not only has similar sintering properties to the Ag NP pastes but also exhibited superior mechanical reliability due to the addition of the Ag MFs. In addition, the sintered properties of different Ag pastes were discussed in terms of the coating organics, thermal behaviour and microstructure. The fracture modes after the shearing tests were analysed in detail. The Ag composite paste provides a potential solution for high-temperature applications.
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Materials Science. Materials in Electronics
- Journal Volume
- 30
- Journal Issue
- 6
- Journal Page Range
- p. 5526-5535
- ISSN
- 0957-4522
- CODEN
- JSMEEV
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 52016346
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- RELIABILITY; SHEAR PROPERTIES; SILVER; SINTERING; THERMAL SHOCK
- Descriptors DEC
- ELEMENTS; FABRICATION; MECHANICAL PROPERTIES; METALS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature