K. Urbanski, T. Falat, P. Matkowski, M. Szczerba, J. Felba, A. Moscicki
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Investigation of electrical properties of contacts made of materials based on sintered nano-Ag particles
In this paper preliminary investigations of electrical properties of new Thermal Interface Materials (TIMs') are presented and discussed. Investigated TIMs are based on mixture of silver flakes and silver nano-particles (nano-Ag) with high content of silver (more than 90% weight). After curing and sintering of such materials, as a result, a bulk, homogenous silver layer with good electrical and mechanical properties is formed. This makes those materials suitable for high-power electronics since both thermal and electrical conductivity of the bulk silver is very high (429 W·m-1·K-1). What makes investigated materials very valuable is a relatively low temperature of sintering process (typ. 120-150°C).
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