Growth of mullite whiskers in mechanochemically activated oxides doped with WO3

L. B. Kong, Haitao Huang, T. S. Zhang, J. Ma, F. Boey, R. F. Zhang, Z. H. Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

The effect of WO3on mullite formation and mullite whisker morphology, in oxide mixtures activated by a high-energy ball milling process, was investigated. Differential thermal analysis (DTA) measurement indicated that WO3enhanced the mullite phase formation, with mullitization temperature of 951 °C, 921 °C and 835 °C for the samples doped with 5, 10 and 20 mol% WO3, respectively. However, the presence of WO3had an undesired effect on the whisker morphology. A decrease in the length of mullite whisker was observed with increasing WO3content. The effect of WO3on the mullite phase formation temperature, as well as the whisker morphology, was explained using a dissolution-precipitation mechanism.
Original languageEnglish
Pages (from-to)2257-2264
Number of pages8
JournalJournal of the European Ceramic Society
Volume23
Issue number13
DOIs
Publication statusPublished - 1 Jan 2003
Externally publishedYes

Keywords

  • Anisotropy
  • Grain growth
  • Milling
  • Mullite
  • Whiskers

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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