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

doi:10.1016/S0955-2219(03)00083-9

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 publication › Journal article › Academic research › peer-review

58 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 language	English
Pages (from-to)	2257-2264
Number of pages	8
Journal	Journal of the European Ceramic Society
Volume	23
Issue number	13
DOIs	https://doi.org/10.1016/S0955-2219(03)00083-9
Publication status	Published - 1 Jan 2003
Externally published	Yes

Keywords

Anisotropy
Grain growth
Milling
Mullite
Whiskers

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

More information

10.1016/S0955-2219(03)00083-9

Cite this

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title = "Growth of mullite whiskers in mechanochemically activated oxides doped with WO3",

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.",

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AU - Kong, L. B.

AU - Huang, Haitao

AU - Zhang, T. S.

AU - Ma, J.

AU - Boey, F.

AU - Zhang, R. F.

AU - Wang, Z. H.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - 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.

AB - 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.

KW - Anisotropy

KW - Grain growth

KW - Milling

KW - Mullite

KW - Whiskers

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