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中文摘要：
采用热压烧结工艺,以氮化铝（AlN）和玻璃碳（GC）为原料、Y2O3作烧结助剂,在氩气氛下烧结制备GC/AlN复相材料。研究了玻璃碳的添加量对复相材料的烧结性能、相组成、显微结构、介电性能以及热导率的影响。结果表明：随着玻璃碳添加量的增加,试样的显气孔率逐渐增大,玻璃碳的添加对试样的烧结有一定的抑制作用。当GC的添加量为7%时,试样的相对介电常数达到最大值,当GC的添加量为3%时,试样的介电损耗最高。玻璃碳的添加量在0~11%范围内时,随着玻璃碳的添加,当添加的玻璃碳含量为11%时,复相材料的热导率最低为48.9W/m·K。
英文摘要：
GC /AlN composites were prepared by hot-pressing sintering in Ar atmosphere,using aluminum nitride and glassy carbon as raw material,Y2O3as additives. The effects of glassy carbon content on the sintering properties,phase composition,microstructure,thermal conductivity and dielectric properties of the composites were investigated. The results show that as the content of GC increasing,the apparent porosity increases gradually,and the glassy carbon adding restrain the sintering of the composites. When the additive content of glassy carbon is 7%,the dielectric constant reached to the maximun. The dielectric loss is highest at glassy carbon additive of 3%. With the 0-11% addition of the glassy carbon, When the additive content of glassy carbon is 11%,the lowest thermal conductivity of the composites is 48. 9 W / m·K.
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