Anodic Stress Corrosion Cracking Susceptibility of Nickel and Nickel-Chromium Alloys Containing Molybdenum and Iron in Bicarbonate Plus Chloride Solutions at 90°C

It is reported in the literature that alloy C-22 (N06022) was found to be susceptible to stress corrosion cracking (SCC) in presence of bicarbonate ions, at temperatures higher than 60°C and anodic applied potentials in the order of 400 mVSCE, (where SCE is the saturated calomel electrode) when usin...

Full description

Saved in:
Bibliographic Details
Published in:Corrosion (Houston, Tex.) Tex.), 2015-04, Vol.71 (4), p.420-432
Main Authors: Zadorozne, N.S., Giordano, C.M., Rebak, R.B., Ares, A.E., Carranza, R.M.
Format: Article
Language:English
Subjects:
Alloying elements
Bicarbonates
Calomel electrode
Chloride
Chromium
Corrosion
Corrosion potential
Cracking (corrosion)
Electrochemistry
Electrodes
Molybdenum
Nickel
Nickel base alloys
Nickel chromium alloys
Powder metallurgy
Slow strain rate
Stainless steel
Stress corrosion
Stress corrosion cracking
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It is reported in the literature that alloy C-22 (N06022) was found to be susceptible to stress corrosion cracking (SCC) in presence of bicarbonate ions, at temperatures higher than 60°C and anodic applied potentials in the order of 400 mVSCE, (where SCE is the saturated calomel electrode) when using slow strain rate tests (SSRTs). This potential range of cracking susceptibility was associated with the instability of a film that may form on the surface. In order to elucidate the role of the alloying elements on the SCC susceptibility of nickel (Ni)-based alloys, four alloys—C-22 (N06022), 600 (N06600), 800H (N08800) and Ni-201 (N02201)—were tested under the same conditions. Results showed that even though C-22, 600, and 800 may have similar electrochemical anodic behavior, only C-22 may present a clear case of SCC at anodic potentials.
ISSN:0010-9312
1938-159X
DOI:10.5006/1326