AES-INVESTIGATION AND LEED-INVESTIGATION OF THE OXIDATION BEHAVIOR OFFE-19,5 CR-4,5 AL SINGLE-CRYSTALS

Authors
SIEGERS M GRABKE HJ VIEFHAUS H
Citation
M. Siegers et al., AES-INVESTIGATION AND LEED-INVESTIGATION OF THE OXIDATION BEHAVIOR OFFE-19,5 CR-4,5 AL SINGLE-CRYSTALS, Fresenius' journal of analytical chemistry, 346(1-3), 1993, pp. 269-274
Citations number
5
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
346
Issue
1-3
Year of publication
1993
Pages
269 - 274
Database
ISI
SICI code
0937-0633(1993)346:1-3<269:AALOTO>2.0.ZU;2-I
Abstract
The oxidation behaviour of Fe- 19,5 Cr-4,5 Al single crystals (110), ( 111) has been investigated to obtain reference data for further oxidat ion experiments on materials of the same composition but doped with yt trium. The oxidation of annealed specimens showing Al surface segregat ion and unannealed (without Al-enrichment) samples was carried out at different temperatures in an UHV-chamber at an oxygen pressure of abou t 10(-7) mbar. During oxidation Auger spectra (20 ... 70 eV) were take n and LEED-patterns were photographed before and after oxidation if de tectable. It has been shown that the type of oxide formed was dependen t on the chemical composition of the surface and the oxidation tempera ture.