Characterization of the closed porosity in plasma-sprayed alumina

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41601

Title: Characterization of the closed porosity in plasma-sprayed alumina
Author(s): Ilavsky, Jan; Allen, Andrew J.; Long, Gabrielle G.; Herman, Herbert; Berndt, Christopher C.
Abstract: The porous phase of plasma-sprayed alumina was characterized using mercury intrusion porosimetry, water immersion methods, and small-angle neutron scattering. A comparison of the results shows that the intrusion techniques did not yield a full porous phase characterization. It has 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 total internal surface area. The smallest void diameter was found to be 10 nm.
Publication type: Journal article
Source: Journal of Materials Science, Vol. 32, no. 13 (Jan 1997), pp. 3407-3410
Publication year: 1997
Keyword(s): Alumina; Closed porosity; Mercury intrusion method; Neutron scattering; Plasma spraying; Porosity; Small angle neutron scattering
Publisher: Springer
ISSN: 0022-2461
Publisher URL: http://dx.doi.org/10.1023/A:1018616632261
Peer reviewed