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Recent Progress in Rapid Sintering of Nanosilver for Electronics Applications
Wei Liu1, Rong An2,3, Chunqing Wang4,5
1State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China. w_liu@hit.edu.cn.
Micromachines
|November 15, 2018
Summary
Rapid sintering of nanosilver pastes offers a lead-free electronic packaging solution. This review explores low-temperature, fast processes for high-performance nanosilver joints, overcoming limitations of traditional methods.
Area of Science:
- Materials Science
- Nanotechnology
- Electronics Packaging
Background:
- Nanosilver pastes are promising lead-free alternatives to high-lead and gold solders for high-temperature electronic applications.
- Current nanosilver paste sintering requires long times, high temperatures (>250 °C), and external pressure, limiting their use.
Purpose of the Study:
- To review recent advancements in rapid sintering processes for nanosilver pastes.
- To discuss preparation, sintering mechanisms, and rapid sintering techniques for nanosilver pastes.
Main Methods:
- Review of literature on nanosilver particle and paste preparation.
- Analysis of nanosilver paste sintering mechanisms.
- Evaluation of rapid sintering techniques including electric current-assisted sintering, spark plasma sintering, and laser sintering.
Main Results:
- Nanosilver pastes enable lower-temperature sintering compared to bulk silver.
- Rapid sintering processes show potential for excellent nanosilver joints.
- Various rapid sintering methods offer alternatives to conventional long-duration, high-temperature processes.
Conclusions:
- Rapid sintering of nanosilver pastes is crucial for efficient electronic packaging.
- Further research is needed on rapid sintering mechanisms and the performance of joints made from diverse nanosilver pastes.
- Optimizing nanosilver paste composition and morphology is key for advanced applications.
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