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Proceedings of Symposium on Energy Engineering in the 21<sup>st</sup> Century (SEE2000) Volume I-IV

ISSN:
1-56700-132-7 (Print)

ON THE USE OF DIAMOND-COATED JUNCTIONS TO ENHANCE THERMAL CONTACT CONDUCTANCE

Kee-Chiang Chung
Department of Mechanical Engineering National Yunlin University of Science and Technology Touliu City, Yunlin 640, TAIWAN

Chien-Ting Chen
Undergraduate research assistance, Department of Mechanical Engineering National Yunlin University of Science and Technology Touliu City, Yunlin 640, TAIWAN

Abstract

An experimental investigation was conducted to determine the degree to which the overall thermal contact conductance at the interface of contacting tungsten carbide (WC) surfaces could be enhanced through the use of vapor deposited diamond coatings. Effect of coating thickness on the thermal contact conductance was studied using three different diamond coating thicknesses. It was apparent that the thermal contact conductance enhancement effect was greatest at low contact pressures and decreased significantly with respect to increases in the contact pressure.