Mechanical, electrical, and thermal properties of graphene nanosheet/aluminum nitride composites

Chuang Yun, Yongbao Feng, Tai Qiu, Jian Yang, Xiaoyun Li, Lei Yu

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Graphene nanosheet (GNS)/aluminum nitride (AlN) composites were prepared by hot-pressing and effects of GNSs on their microstructural, mechanical, thermal, and electrical properties were investigated. At 1.49 vol% GNSs content, the fracture toughness (5.09 MPa m1/2) and flexural strength (441 MPa) of the composite were significantly increased by 30.17% and 17.28%, respectively, compared to monolithic AlN. The electrical conductivity of the composites was effectively enhanced with the addition of GNSs, and showed a typical percolation behavior with a low percolation threshold of 2.50±0.4 vol%. The thermal conductivity of the composites decreased with the addition of GNSs.

Original languageEnglish
Pages (from-to)8643-8649
Number of pages7
JournalCeramics International
Volume41
Issue number7
DOIs
StatePublished - 1 Aug 2015

Keywords

  • AlN
  • C. Electrical properties
  • C. Mechanical properties
  • C. Thermal properties
  • Graphene nanosheets

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