Effect of heat treatment on thermal conductivity and dielectric properties of AlN ceramics

被引:0
作者
He, Xiulan [1 ]
Shi, Lei [1 ]
Gong, Qingdong [1 ]
Guo, Yingkui [1 ]
Ye, Feng [2 ]
机构
[1] School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin
[2] School of Materials Science and Engineering, Harbin Institute of Technology, Harbin
来源
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2015年 / 43卷 / 09期
关键词
Aluminum nitride ceramics; Dielectric property; Heat treatment; Thermal conductivity;
D O I
10.14062/j.issn.0454-5648.2015.09.02
中图分类号
学科分类号
摘要
Aluminum nitride (AlN) ceramics prepared by a fast spark plasma sintering method were heat-treated by a vacuum pressureless sintering method. Effect of sintering additive on the phase composition, microstructure, thermal and dielectric properties of AlN ceramics during high-temperature heat treatment process was investigated. The results show that the heat treatment enhances the growth of AlN grains and the distribution of secondary phases. Compared to AlN ceramics with single rare earth oxide, the thermal conductivity and dielectric loss of AlN ceramics with earth oxide-CaF2 multiple sintering additive are improved due to the effects of effective removing oxygen and forming evaporable secondary phases. ©, 2015, Chinese Ceramic Society. All right reserved.
引用
收藏
页码:1186 / 1191
页数:5
相关论文
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