Predicting Protective Film Behaviour on Low Carbon Steel
- Conference
- New Zealand Geothermal Workshop
- Year
- 1993
- Session
- Engineering
- Language
- English
Full text
475KB, opens in a new tab
Abstract
Magnetiteand duplex iron sulphide-magnetitefilms have been grown in a autoclave at 1 and analysed using Electrochemical Impedance Spectroscopy and equivalent circuit theory. Corrosion rates obtained from the impedance data comparedwell with those derived from coupon weight losses. However, itwas apparent that the mechanismof corrosionand passivefilm growthwas differentfor each system. Therefore, the considerable body of knowledge on magnetite formation in high temperature aqueous environments, and the protection of carbon steel by that film, cannot be applied to the duplex iron sulphide-magnetite system.
Copyright 1993, University of Auckland. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.