US EPA

1736719 

Journal Article 

Effect of compaction on the sintering of borosilicate glass/alumina composites 

Monteiro, RCC; Lima, MMRA 

2003 

Yes 

Journal of the European Ceramic Society
ISSN: 0955-2219 

23 

11 

1813-1818 

WOS:000184035500006 

The effect of initial compaction on the sintering of borosilicate glass matrix composites reinforced with 25 vol.% alumina (Al(2)O(3)) particles has been Studied using powder compacts that were uniaxially pressed at 74, 200 and 370 MPa. The sintering behaviour of the samples heated in the temperature range 850-1150 degreesC was investigated by density measurement, axial and radial shrinkage measurement and microstructural observation. The density of the sintered composites increased continuously with temperature for compacts pressed at 74 MPa. while for compacts pressed at 200 and 370 MPa it reached the maximum value at 1050 degreesC and at higher temperatures it decreased slightly due to swelling. The results showed anisotropic shrinkage behaviour for all the samples, which exhibited an axial shrinkage higher than the radial shrinkage, and the anisotropic character increased with the initial compaction pressure. (C) 2003 Elsevier Science Ltd. All rights reserved. 

Al(2)O(3); borosilicate glass; compactiom composites; glasses; sintering