Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7898670 | Journal of the European Ceramic Society | 2018 | 5 Pages |
Abstract
In this work, a high-performance microwave absorption ceramic together with high thermal conductivity was proposed through the introduction of phenolic resin as the carbon source into AlN ceramic substrate. The phenolic resin was initially mixed with AlN powder and sintering additives in ethanol to form homogeneous slurries, followed by drying, pyrolysis, dry pressing and pressureless sintering to develop nano carbon in situ in AlN substrate. The well controlled microstructure with homogeneous distribution of nano sized carbon lead to the high thermal conductivity and excellent microwave absorption properties. by adjusting the phenolic resin content, the ceramic showed a minimal reflection coefficient of about â30 dB with an effective bandwidth of about 2 GHz together with a high thermal conductivity of about 135.1 W/m K.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yongqin He, Xiaoyun Li, Jingxian Zhang, Xiaoguang Li, Yusen Duan, Mingming Huang, Hainan Bai, Dongliang Jiang, Tai Qiu,