ISSN 0862-5468 (Print), ISSN 1804-5847 (online)

 Information
Home
Publisher
Publication policy
Editorial board
Editors
Impact factor

Online submission
Author guidelines
Instruction for reviewers
Download instructions
 List of Content
Volume 59, 2015
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Volume 58, 2014
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Volume 57, 2013
  - Issue 1
  -
Issue 2
  - Issue 3
  - Issue 4
Previous Issues
  - 1995 - 2012

Ceramics-Silikáty 57 (2) 133-137 (2013)


EFFECT OF ALUMINUM POWDER ON THE SYNTHESIS OF CORUNDUM-MULLITE COMPOSITES

Ruan G., Zhang Z., Yin M., Xu G.

Corundum-mullite composites were prepared by reaction sintering from tabular corundum, activated mullite powder, metal aluminum powder and SiO2 micro powder. The effect of aluminum powder content on the synthesis and densification of the corundum-mullite was studied. All raw materials were mixed and pressed into billets with diameters of 20 mm and height of 15 mm. The green-body billets were sintered at temperature from 1100°C to 1500°C in an air atmosphere. Bulk density, apparent porosity, phase composition and microstructure of final sintered products were analyzed. The results indicated that aluminum powder can promote the densification and mullitization of corundum-mullite composites. At the same time, aluminum powder promoted the formation of columnar mullite. Among materials sintered at 1500°C for 3 h, samples with 8 % aluminum powder had the highest bulk density.

Keywords: Aluminum, Corundum-mullite composites, Sintering, Densification

 Download the full version (PDF, 911 kB)

[Back]

 Webmaster l Journal Contact l Server Statistics l Last updated 11/15/15 l