Abstract

AbstractSilver matrix composites with short and long carbon fibres of high intrinsic thermal conductivity were fabricated either by liquid metal infiltration or electroless deposition of the Ag matrix and subsequent hot pressing. Active elements enhancing the bonding between inclusions and matrix were introduced by pre-conditioning the fibres thus to influence and improve the overall thermo-physical properties of the composites. The evolution of the composite thermal conductivity (κc) and the coefficient of thermal expansion (αc) as a function of the fibre volume fraction, fibre type, fibre length (fibre orientation) and the presence of active elements such as cobalt, molybdenum, nickel, tungsten and boron are presented in detail and compared with different analytical models.

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