Title
High temperature surface oxidation of metallic fibers for hot gas filtration
Abbreviated Journal Title
Surf. Eng.
Keywords
CR-AL ALLOYS; ALUMINA SCALES; GROWTH-MECHANISM; ALPHA-AL2O3; DIFFUSION; ODS; Materials Science, Coatings & Films
Abstract
Metal hot gas filters made of Fe Cr-Al alloy fibre media have been developed to meet the increasingly stringent requirement for hot gas filtration. High temperature oxidation behaviour of Fe-Cr-Al alloy fibre media consisting of a random non-woven feltlike structure was studied at a temperature of 1255 K in dry air. Two types of Fe-Cr-Al alloys, namely Hoskins 875 and Fe-Cr-Al-Mo were used in the present study. The oxidation kinetics was found to follow the parabolic law for thick fibres (25 mum). The scale morphology and chemical composition were studied by SEM/EDAX. Focused ion beam (FIB) was used to investigate the scale cross-section. X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) studies confirmed that alumina scale forms on the surface of the Fe-Cr-Al alloy fibre media. Both fibres, 12 mum in diameter, showed short lifetimes at 1255 K. Fe-Cr Al-Mo was found to have more oxidation resistance than Hoskins 875 at 1255 K.
Journal Title
Surface Engineering
Volume
18
Issue/Number
3
Publication Date
1-1-2002
Document Type
Article
Language
English
First Page
197
Last Page
201
WOS Identifier
ISSN
0267-0844
Recommended Citation
"High temperature surface oxidation of metallic fibers for hot gas filtration" (2002). Faculty Bibliography 2000s. 3186.
https://stars.library.ucf.edu/facultybib2000/3186