Speaker
Description
Electronic devices are continuously evolving towards high performance and miniaturization size. In this way, heat dissipation problem has become a major obstacle to their development. Generally, the heat generated is typically transferred to a heat sink by heat conduction, and then to the ambient by natural, mixed or forced convection. Low efficiency of heat removal could cause damage due to the temperature rises. Consequently, new and advanced thermal management solutions are being profusely searched.
In order to increase the heat dissipation, the heat sink must be designed properly to promote heat transfer and therefore the selection of the appropriate material is really important. Conventional heat exchangers are mainly constructed of monolithic metals and metal alloys. However, metallic heat exchangers cannot operate at high temperatures for long periods of time. Carbon possesses a number of favorable characteristics that makes it an ideal material for this application.
In this work, graphite-matrix composite material containing molybdenum and titanium has been synthetized following a ceramic processing route. The obtained material has been sintered by Spark Plasma Sintering (SPS) and the effect of different sintering parameters such as uniaxial pressure, temperature, heating rate on the final properties have been studied. FESEM, mechanical, electrical and thermal properties of the sintered samples have been characterized. Increasing the uniaxial pressure allows to improve the properties of the final material, obtaining materials with electrical conductivity values much higher than copper.
| Speaker Country | Spain |
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