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Fabrication and Microstructure of Electrically Conductive AlN with High Thermal Conductivity
Abstract:
The electrically conductive AlN with high thermal conductivity were successfully fabricated by sintering AlN with a composite additive of 1wt.% Y2O3 and 4wt.% CeO2 in carbon-reduced atmosphere at over 1600 °C. The sudden increase in electrical conductivity is thought to be caused by transition of grain boundary phase from rare-earth oxide to rare-earth oxycarbide. Their electrical conductivities and thermal conductivities increased with increasing sintering temperature. Additionally, sintering temperature influenced the resultant microstructures.
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57-60
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July 2011
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© 2011 Trans Tech Publications Ltd. All Rights Reserved
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