An AES and XPS study of the high alloy austenitic stainless steel 254 SMO® tested in a ferric chloride solution

The surface conditions of the high alloy stainless steel Avesta 254 SMO® were investigated after immersion in a 6 wt% FeCl 3 solution at different temperatures and for different lengths of time. Techniques used were Auger Electron Spectroscopy and Angular Resolved X-ray Photo-electron Spectroscopy....

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Bibliographic Details
Published inCorrosion science Vol. 36; no. 1; pp. 141 - 151
Main Authors Olsson, Claes-Olof A., Hörnström, Sven Erik
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1994
Elsevier Science
Subjects
Applied sciences
Corrosion
Corrosion environments
Exact sciences and technology
Metals. Metallurgy
Austenitic stainless steel
Pitting corrosion
Corrosion test
Test method
Photoelectron spectrometry
Critical temperature
Auger electron spectrometry
Iron chloride
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Summary:The surface conditions of the high alloy stainless steel Avesta 254 SMO® were investigated after immersion in a 6 wt% FeCl 3 solution at different temperatures and for different lengths of time. Techniques used were Auger Electron Spectroscopy and Angular Resolved X-ray Photo-electron Spectroscopy. At present, there are at least two methods of establishing the critical pitting temperature (CPT) in a ferric chloride solution; the temperature is raised after inspection for pits and the test is renewed with either (I) the same sample as was used before, or (2) a new sample. The higher CPT measured by the first method is caused by the formation of a more stable passive layer during the previous exposure.
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ISSN:0010-938X
1879-0496
DOI:10.1016/0010-938X(94)90115-5