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A carbon fiber solder matrix composite for thermalmanagement of microelectronic devices
Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Gothenburg, Sweden.
Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Gothenburg, Sweden.
Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, Gothenburg, Sweden; School of Mechatronics and Mechanical Engineering, Key Laboratory of New Displays and System Integration, Shanghai University, China .
SHT Smart High-Tech AB, Gothenburg, Sweden.
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2014 (English)In: Journal of Materials Chemistry C, ISSN 2050-7526, E-ISSN 2050-7534, Vol. 2, no 35, 7184-7187 p.Article in journal (Refereed) Published
Abstract [en]

A carbon fiber based tin-silver-copper alloy matrix composite (CF-TIM) was developed via electrospinning of a mesophase pitch with polyimide and carbonization at 1000 °C, followed by sputter coating with titanium and gold, and alloy infiltration. The carbonized fibers, in film form, showed a thermal conductivity of ∼4 W m-1 K-1 and the CF-TIM showed an anisotropic thermal conductivity of 41 ± 2 W m-1 K-1 in-plane and 20 ± 3 W m-1 K-1 through-plane. The thermal contact resistance of the CF-TIM was estimated to be below 1 K mm2 W-1. The CF-TIM showed no reduction in effective through-plane thermal conductivity after 1000 temperature cycles, which indicates the potential use of CF-TIM in thermal management applications.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2014. Vol. 2, no 35, 7184-7187 p.
Keyword [en]
Engineering controlled terms: Carbon fibers; Carbonization; Gold coatings; Metallic matrix composites; Microelectronics; Temperature control; Titanium alloys Mesophase pitch; Sputter coating; Temperature cycles; Thermal contact resistance; Thermal management applications; Thermal management of micro-electronic device; Through-plane thermal conductivities; Tin-silver-copper alloys Engineering main heading: Thermal conductivity of solids
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-109093DOI: 10.1039/C4TC00936CISI: 000341280000007Scopus ID: 2-s2.0-84906076315OAI: oai:DiVA.org:liu-109093DiVA: diva2:736558
Available from: 2014-08-07 Created: 2014-08-07 Last updated: 2017-12-05Bibliographically approved

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Jokubavicius, ValdasSyväjärvi, Mikael

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