Processing of hot pressed Al2O3-Cr2O3/Cr-carbide nanocomposite prepared by MOCVD in fluidized bed

Hao Tung Lin, Sheng Chang Wang, Jow Lay Huang, Shin Yun Chang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Nanosized particles dispersed uniformly on Al2O3 particles were prepared from the decomposition of precursor Cr(CO)6 by metal organic chemical vapor deposition (MOCVD) in a fluidized chamber. These nanosized particles consisted of Cr2O3, CrC1-x, and C. A solid solution of Al2O3-Cr2O3 and an Al2O3-Cr2O3/Cr3C 2 nanocomposite were formed when these fluidized powders were pre-sintered at 1000 and 1150 °C before hot-pressing at 1400 °C, respectively. In addition, an Al2O3-Cr2O3/Cr-carbide (Cr3C2 and Cr7C3) nanocomposite was formed when the particles were directly hot pressed at 1400 °C. The interface between Cr3C2 and Al2O3 is non-coherent, while the interface between Cr7C3 and Al2O3 is semi-coherent.

Original languageEnglish
Pages (from-to)4759-4765
Number of pages7
JournalJournal of the European Ceramic Society
Volume27
Issue number16
DOIs
Publication statusPublished - 2007 Oct 4

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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