ELLIPSOMETRIC STUDY OF THE ELECTROCHEMICAL MECHANISM OF THE PASSIVATION OF FE-CR ALLOYS DURING GAS OXIDATION BY ALTERNATING-CURRENT

Authors
KOTENEV VA FOKIN MN
Citation
Va. Kotenev et Mn. Fokin, ELLIPSOMETRIC STUDY OF THE ELECTROCHEMICAL MECHANISM OF THE PASSIVATION OF FE-CR ALLOYS DURING GAS OXIDATION BY ALTERNATING-CURRENT, Protection of metals, 31(1), 1995, pp. 46-51
Citations number
17
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Protection of metals → ACNP
ISSN journal
00331732
Volume
31
Issue
1
Year of publication
1995
Pages
46 - 51
Database
ISI
SICI code
0033-1732(1995)31:1<46:ESOTEM>2.0.ZU;2-U
Abstract
The particular features of the dependence of gas oxidation of Fe-18Cr alloy on the air pressure with heating by alternating current and in a furnace have been studied, taking into account the activating functio n of alternating current. The activating action of heating by alternat ing current in the region of 2 x 10(-2) torr manifests itself as a str ong thickening and change in the composition of the oxide formed. The results were analyzed using the Wagner model supplemented by an accoun t of polarization phenomena on phase boundaries of the growing oxide.