Synthesis of mullite whiskers using salt flux method

Bing Zhang*, Chuan Bao Cao, Ya Jie Xu, He Sun Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Using SiO2 and Al2O3 as raw materials, mullite whiskers were prepared by heating at 1 200°C for 4 h in potassium sulfate flux. The morphology, crystalline characteristics, compositions and growth direction of whiskers were investigated by means of XRD, SEM, EDS and TEM. The results indicate that the as-synthesized whiskers are about 4 μm in length and 0.5-1 μm in diameter, and mullite whiskers grow along c-axis direction ([001] direction). The formation of mullite whiskers is controlled by dissolution-precipitation reactions, and the salt flux method is a good way to grow mullite whiskers.

Original languageEnglish
Pages (from-to)277-280
Number of pages4
JournalChinese Journal of Inorganic Chemistry
Volume21
Issue number2
Publication statusPublished - 1 Feb 2005

Keywords

  • Growth mechanism
  • Mullite
  • Salt flux
  • Whisker

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