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Innovative hybrid heat sink materials with high thermal conductivities and tailored CTE

MetadataDetails
Publication Date2015-02-20
JournalProceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
AuthorsMichael Kitzmantel, Erich Neubauer
InstitutionsUniversity of Applied Sciences Technikum Wien, RHP Technology (Austria)
Citations7

This paper talks about high performance heat sinks and heat spreaders made by hybrid structures based on metaldiamond composites. Thermal conductivities can be tuned between 450 and 650 W/mK while maintaining customizable thermal expansion of 6-10 ppm/K (@30°C). Using different hybrid structures in combination with the metal-diamond core significant changes in thermal properties can be identified. Applications targeted are LED, disc laser and laser diode heatsinks with these high performance inserts without the need of CTE matched submounts.