Sinterability, thermal conductivity and microwave attenuation performance of AlN-SiC system with different SiC contents

Wenhui Lu, Xiaoyun Li, Weihua Cheng, Tai Qiu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

AIN-SiC composites with TiO2 and Y2O3 as sintering additives were prepared by hot-pressing in a nitrogen atmosphere. The effects of different SiC contents on the sinterability, thermal conductivity and microwave attenuation performance of AIN-SiC composites were studied by XRD, SEM and network analyzer. The composites reach a high relative density (99%) with SiC below 70wt%, while the content of SiC is increased continually, the relative density is decreased. When the SiC content is lower than 40wt%, the AIN-SiC composites show narrow frequency band attenuation performance and have low attenuation. When increasing SiC content continually (40wt %-80wt %), the composites show wide frequency band attenuation performance. The relationship between the content of SiC and the thermal conductivity is also presented.

Original languageEnglish
Title of host publicationCeramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.
PublisherAmerican Ceramic Society
Pages479-484
Number of pages6
ISBN (Print)9780470408421
DOIs
StatePublished - 2010
EventCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium - Shanghai, China
Duration: 10 Nov 200814 Nov 2008

Publication series

NameCeramic Transactions
Volume210
ISSN (Print)1042-1122

Conference

ConferenceCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium
Country/TerritoryChina
CityShanghai
Period10/11/0814/11/08

Keywords

  • Aluminum nitride
  • Microwave attenuation
  • Silicon carbide
  • Sinterability
  • Thermal conductivity

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