SIMS proceedings paper
The initial effect of KCl deposit on alumina scales characterized by ToF-SIMS and AES
Article first published online: 19 JUN 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Surface and Interface Analysis
Special Issue: Proceedings of the Eighteenth International Conference on Secondary Ion Mass Spectrometry, SIMS XVIII, Riva Del Garda, Trento, Italy, September 18 - 23, 2011
Volume 45, Issue 1, pages 445–448, January 2013
How to Cite
Engkvist, J., Israelsson, N. and Bexell, U. (2013), The initial effect of KCl deposit on alumina scales characterized by ToF-SIMS and AES. Surf. Interface Anal., 45: 445–448. doi: 10.1002/sia.5081
- Issue published online: 18 DEC 2012
- Article first published online: 19 JUN 2012
- Manuscript Accepted: 29 MAY 2012
- Manuscript Revised: 14 MAY 2012
- Manuscript Received: 9 OCT 2011
- initial oxidation
A FeCrAl alloy was preoxidized to form a protective alumina scale, and the effect of KCl deposits on the alumina scale was investigated while exposed during 1 and 24 h at 600 °C. However, impurity concentrations in the alumina scale change the ion conductivity and hence affect its protective properties. Therefore, Auger electron spectroscopy and time-of-flight secondary ion mass spectrometry were used to characterize the alumina scales and detect traces of K and Cl. The results showed that K and Cl existed as large sharp-edged crystals surrounded by a dendritic network after 1 h. However, after 24 h, those were dissolved, and K together with Cl was detected only in the outer layer of the duplex alumina scale, which was formed during preoxidation. Copyright © 2012 John Wiley & Sons, Ltd.