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Synthesis of a powder precursor in the form of hydroxyhydrogel for reaction sintering of BN–mullite composite

Authors
Journal
Ceramics International
0272-8842
Publisher
Elsevier
Publication Date
Volume
32
Issue
2
Identifiers
DOI: 10.1016/j.ceramint.2005.02.003
Keywords
  • Boron Nitride–Mullite Composite
  • Hydroxy Hydrogel Intermediate

Abstract

Abstract A powder precursor in the form of hydroxyhydrogel was prepared for the reaction sintering in the h-BN–mullite composite system. The powder precursor contains all the essential elements for the formation of the composite. Characterization of the powder precursor indicated the presence of Al 3+ in predominantly hexacoordinated state. The powder precursor yielded consolidated BN–mullite composite formed during heat treatment of pressed compact in ambient gas atmosphere.

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