Abstract
Metal matrix composites reinforced with ceramic particles have become the most attractive material in the research and development of new materials for thermal management applications. In this work, 40–60 vol. % TiCx-TiB2/Al composites were successfully fabricated by the method of combustion synthesis and hot press consolidation in an Al-Ti-B4C system. The effect of the TiCx-TiB2 content on the microstructure and compression properties of the composites was investigated. Moreover, the abrasive wear behavior and thermo-physics properties of the TiCx-TiB2/Al composite were studied and compared with the TiCx/Al composite. The compression properties, abrasive wear behavior and thermo-physics properties of the TiCx-TiB2/Al composite are all better than those of the TiCx/Al composite, which confirms that the TiCx-TiB2/Al composite is more appropriate for application as a heat sink.
Highlights
Heat sinks are used to dissipate the heat generated from electronic components during their working process and protect them from external damage and mechanical forces [1,2]
Investigated the effect of a metalloid silicon addition on the thermal-physical properties of diamond/Al composites. They reported that the silicon addition would effectively increase the thermal conductivity (TC) and decrease the coefficient of thermal expansion (CTE) of the diamond/Al composites. It can be seen from the above-mentioned work that the reinforcing particles used in aluminum matrix composites for heat sink applications are mainly limited to SiC and diamond, which are usually introduced into the Al matrix by an ex situ method
The products in these samples are mainly Al, TiCx and TiB2 phases, without any intermediate phases that can be detected. It indicates that the pure in situ dual-reinforcement TiCx -TiB2 /Al composites could be successfully fabricated by the method of combustion synthesis and hot press consolidation
Summary
Heat sinks are used to dissipate the heat generated from electronic components during their working process and protect them from external damage and mechanical forces [1,2]. They reported that the silicon addition would effectively increase the TC and decrease the CTE of the diamond/Al composites It can be seen from the above-mentioned work that the reinforcing particles used in aluminum matrix composites for heat sink applications are mainly limited to SiC and diamond, which are usually introduced into the Al matrix by an ex situ method. The abrasive wear behavior and thermo-physics properties of the TiCx -TiB2 /Al composite were studied and compared with the TiCx /Al composite This will offer some guidance to fabrication and investigation for the aluminum matrix composite in a heat sink application, and even more to the other metal matrix composite in a heat sink application
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