The study of the microwave absorption property of the Al and N codoped SiC Nanopowders

Yankun Dou, Hai Bo Jin*

*Corresponding author for this work

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

Abstract

Nanopowders of aluminum and nitrogen codoped β-silicon carbide (β-SiC) were successfully produced by self-propagating high-temperature synthesis (SHS) in a nitrogen atmosphere. Characterizations by X-ray diffraction and scanning electron microscopy demonstrate the formation of Al-N codoped β-SiC nanopowders. In 1 MPa N 2 atmosphere, the X-ray analysis of the produced powders suggests that Al and N are accommodated in the lattice of SiC, which enlarges with increasing amounts of Al. The electric permittivities of prepared powders have been determined in the frequency range of 8.2-12.4 GHz. Al and N codoping results in the increase of the electric permittivities of SiC, compared to the undoped SiC. With the increasing the amounts of Al, the electric permittivities of the Al and N codoped SiC nanopowders are increased. The paper presents a method to adjust dielectric property of SiC powders in the GHz range. These features confer Al-N codoped β-SiC qualifications of the important microwave absorbing material.

Original languageEnglish
Title of host publicationTechnical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
Pages306-309
Number of pages4
Publication statusPublished - 2012
EventNanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012 - Santa Clara, CA, United States
Duration: 18 Jun 201221 Jun 2012

Publication series

NameTechnical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012

Conference

ConferenceNanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
Country/TerritoryUnited States
CitySanta Clara, CA
Period18/06/1221/06/12

Keywords

  • Al-N
  • Electric permittivities
  • Nanopowders
  • β-SiC

Fingerprint

Dive into the research topics of 'The study of the microwave absorption property of the Al and N codoped SiC Nanopowders'. Together they form a unique fingerprint.

Cite this