کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1476988 | 991168 | 2007 | 8 صفحه PDF | دانلود رایگان |
Sintering of the AlN powder synthesized by a combustion synthesis method, which was developed recently by the present authors, was studied by using a microwave sintering technique. A single mode microwave cavity was used and an insulation package with a simple configuration was developed. A high sintering temperature (1900 °C or higher) and a stable and uniform heating were readily achieved. A temperature measurement technique using a thermocouple with extrapolation was established to obtain the sintering temperature. A percent theoretical density of 99.5% and a thermal conductivity of 186 W/m K were obtained for a specimen which was sintered at 1900 °C with a soaking time of 30 min and 3 wt.% of Y2O3 added. The effects of sintering aid (i.e., Y2O3) and sintering temperature on densification, microstructure and thermal conductivity of the sintered specimens were investigated.
Journal: Journal of the European Ceramic Society - Volume 27, Issue 1, 2007, Pages 343–350