Transient Liquid Phase Bonding of AlN to AlSiC for Durable Power Electronic Packages
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Army Research Lab., Adelphi, MD (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
Conventional power electronic modules employ a direct bonded copper (DBC) substrate and multiple interface layers to dissipate heat. However, reliability issues arise due to the coefficient of thermal expansion (CTE) mismatch that exists between the metal, ceramic, and semiconductor materials in the conventional module. Significant performance enhancement can be achieved by eliminating the DBC and developing an integrated substrate/cold plate with a low CTE mismatch throughout the package. To address this need, we have demonstrated the ability to directly bond the aluminum nitride (AlN) substrate to an AlSiC heat sink through transient liquid phase bonding using a Cu-Al binary system. Fabricated samples are found to have good interfacial adhesion. The novel bond material exhibits properties analogous to AlSiC and is analyzed for thermal, mechanical, and metallographic properties. The novel structure demonstrated in this work will enable smaller, lighter, and more reliable power modules, when compared to traditional configurations.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1479868
- Report Number(s):
- NREL/JA-5400-71786
- Journal Information:
- Advanced Engineering Materials, Vol. 20, Issue 10; ISSN 1438-1656
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Thermal management applied laminar composites with SiC nanowires enhanced interface bonding strength and thermal conductivity
|
journal | January 2019 |
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