REACTIONS OF CHROMIUM IN SO2-CONTAINING ATMOSPHERES

Authors
ANDERSEN AG KOFSTAD P
Citation
Ag. Andersen et P. Kofstad, REACTIONS OF CHROMIUM IN SO2-CONTAINING ATMOSPHERES, Oxidation of metals, 43(3-4), 1995, pp. 301-315
Citations number
21
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Oxidation of metals → ACNP
ISSN journal
0030770X
Volume
43
Issue
3-4
Year of publication
1995
Pages
301 - 315
Database
ISI
SICI code
0030-770X(1995)43:3-4<301:ROCISA>2.0.ZU;2-#
Abstract
The morphology and composition of scales formed on unalloyed chromium in atmospheres containing SO2 at high temperatures have been studied. SEM images show chromium sulfides formed at the metal/scale interface. The results indicate that SO2 may penetrate the scale as molecules, b ut the rate of this penetration is low. At 600 degrees C formation of Cr-2(SO4)(3) is also observed by SEM on the scale surface formed in SO 2 + O-2/SO3 mixtures.