Paper Title:
Corrosion Behavior of Fe-Cr Alloys in Ar-10%O2 Atmosphere
  Abstract

The corrosion of four Fe-Cr alloys (Cr: 9, 12, 20, and 25%) with different Cr contents were subjected to cyclic oxidation furnace in Ar-10%O2 atmosphere at 950oC for 120 h. The samples after oxidation were investigated by using X-ray diffraction (XRD), optical metallography and SEM/EDS. The results indicated that increasing Cr content reduced the oxidation rate and the scale cracking. Alloys with less Cr content occurred breakaway oxidation due to formation of Fe-rich oxide scale. However, a thin protective chromia scale was observed on alloys with Cr > 20%. The corrosion behaviour on Fe-Cr alloy was then discussed based on experimental observation.

  Info
Periodical
Key Engineering Materials (Volumes 462-463)
Edited by
Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri
Pages
1250-1254
DOI
10.4028/www.scientific.net/KEM.462-463.1250
Citation
N. K. Othman, N. Othman, A. Jalar, "Corrosion Behavior of Fe-Cr Alloys in Ar-10%O2 Atmosphere", Key Engineering Materials, Vols. 462-463, pp. 1250-1254, 2011
Online since
January 2011
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Price
$35.00
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