Silicon carbide particle reinforced mullite composite foams


Akpinar S., Kusoglu I. M., Ertugrul O., Onel K.

CERAMICS INTERNATIONAL, vol.38, no.8, pp.6163-6169, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 8
  • Publication Date: 2012
  • Doi Number: 10.1016/j.ceramint.2012.04.067
  • Journal Name: CERAMICS INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6163-6169
  • Keywords: Ceramic foam, Mullite, Rheology, SiC, FABRICATION, CERAMICS
  • Dokuz Eylül University Affiliated: Yes

Abstract

Silicon carbide particle reinforced mullite composite foams were produced by the polymer replica method using alumina and kaolin to form in situ mullite matrix. Up to 20 wt.% silicon carbide particles (SiCp) were added to aqueous ceramic slurry to explore its effect on the rheological behaviour of ceramic slurries and also properties of as sintered products. By means of solid loading optimisation and sintering enhancement by silicon carbide, mullite based Ceramic composite foams of higher strength were obtained. The strength of the as sintered foams was found to depend greatly on the phase composition, relative density of the structures and the amount of SiCp addition. By studying the effect of the additive concentration, on the mechanical properties of the ceramic matrix, it is found that the optimal silicon carbide addition is 20 wt.%. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.