CHARACTERIZATION OF THE CLOSED POROSITY IN PLASMA-SPRAYED ALUMINA

Authors
ILAVSKY J ALLEN AJ LONG GG HERMAN H BERNDT CC
Citation
J. Ilavsky et al., CHARACTERIZATION OF THE CLOSED POROSITY IN PLASMA-SPRAYED ALUMINA, Journal of Materials Science, 32(13), 1997, pp. 3407-3410
Citations number
19
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
32
Issue
13
Year of publication
1997
Pages
3407 - 3410
Database
ISI
SICI code
0022-2461(1997)32:13<3407:COTCPI>2.0.ZU;2-W
Abstract
The porous phase of plasma-sprayed alumina was characterized using mer cury intrusion porosimetry, water immersion methods, and small-angle n eutron scattering. A comparison of the results shows that the intrusio n techniques did not yield a full porous phase characterization. It ha s been found that while the amount of closed porosity was 1.4% (+/- 0. 5%) of the sample volume, this volume accounted for only 60% of the to tal internal surface area. The smallest void diameter was found to be 10 nm.