Using Metallic Coatings to Enhance Thermal Contact Conductance of Electronic Packages

Recently a new thermomechanical model for coated contacts has been developed and shown to be quite accurate. After a brief overview of the theory, this paper concentrates on illustrating the utility of the new model by applying it to a common electronics packaging problem: heat transfer across an al...

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Bibliographic Details
Published in:Heat transfer engineering 1988-06, Vol.9 (3), p.85-92
Main Authors: ANTONETTI, VINCENT W., YOVANOVICH, M. MICHAEL
Format: Article
Language:English
Subjects:
Applied sciences
coatings
Design. Technologies. Operation analysis. Testing
electronic equipment
Electronics
Exact sciences and technology
heat transfer
Integrated circuits
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:Recently a new thermomechanical model for coated contacts has been developed and shown to be quite accurate. After a brief overview of the theory, this paper concentrates on illustrating the utility of the new model by applying it to a common electronics packaging problem: heat transfer across an aluminum joint. Several soft metallic coatings are considered, and the thermomechanical model is used to predict the improvement in the contact conductance over that for a bare aluminum-to-aluminum joint. For each coating material, heat transfer performance is presented as a function of the coating thickness, the surface roughness, and the applied pressure. Finally, a parameter is proposed that allows candidate coating materials to be ranked.
ISSN:0145-7632
1521-0537
DOI:10.1080/01457638808939674