Menu
Search
Filters
Close
Menu

02358 CORROSION RESISTANCE OF FE-CR AND NI-CR ALLOYS IN OXIDIZING SUPERCRITICAL HCL SOLUTION

Picture for 02358 CORROSION RESISTANCE OF FE-CR AND...
Available for download
Product Number: 51300-02358-SG
ISBN: 02358 2002 CP
Author: Nobuyoshi Hara, Satoshi Tanaka, Saiko Soma, and Katsuhisa Sugimoto
$0.00
$20.00
$20.00
The corrosion behavior of binary Fe-Cr (10-40%Cr) and Ni-Cr alloys (10-30%Cr) has been examined in 1mM-HCl+0.6M-H2O2 at 500°C and 29.4MPa. By comparing the weight loss due to oxidation with that due to dissolution and examining the time dependence of the weight losses, it was found that oxidation was a dominant corrosion process of the alloys at 500°C. The corrosion rate decreased with increasing Cr content and reached a minimum at 30% and 20% Cr for Fe-Cr and Ni-Cr alloys, respectively. A further increase in the Cr content increased the corrosion rate. These results can be explained by taking account of both beneficial and detrimental effects of Cr: increasing the Cr content improves oxidation resistance but accelerates transpassive dissolution at 500°C. The addition of a small amount of Mo (1-2%) to Fe-Cr alloys (> 25%Cr) was found to be effective for further improvements of the corrosion resistance of the alloys. The corrosion tests of Fe-Cr alloys were performed at various temperatures between 300 and 500°C. The results of the tests suggested that the transpassive dissolution rate of Cr was high at temperatures around 350°C and above 500°C, but was low at temperatures of 400-450°C. At these temperatures, which is just above the critical point, the corrosion resistance of Fe-Cr alloys was improved significantly with increasing Cr content and no detrimental effect of Cr could be observed even at the Cr contents as high as 40%. Keywords: supercritical water oxidation, hydrochloric acid, Fe-Cr alloy, Ni-Cr alloy, oxidation, dissolution, pitting corrosion, transpassive dissolution.
The corrosion behavior of binary Fe-Cr (10-40%Cr) and Ni-Cr alloys (10-30%Cr) has been examined in 1mM-HCl+0.6M-H2O2 at 500°C and 29.4MPa. By comparing the weight loss due to oxidation with that due to dissolution and examining the time dependence of the weight losses, it was found that oxidation was a dominant corrosion process of the alloys at 500°C. The corrosion rate decreased with increasing Cr content and reached a minimum at 30% and 20% Cr for Fe-Cr and Ni-Cr alloys, respectively. A further increase in the Cr content increased the corrosion rate. These results can be explained by taking account of both beneficial and detrimental effects of Cr: increasing the Cr content improves oxidation resistance but accelerates transpassive dissolution at 500°C. The addition of a small amount of Mo (1-2%) to Fe-Cr alloys (> 25%Cr) was found to be effective for further improvements of the corrosion resistance of the alloys. The corrosion tests of Fe-Cr alloys were performed at various temperatures between 300 and 500°C. The results of the tests suggested that the transpassive dissolution rate of Cr was high at temperatures around 350°C and above 500°C, but was low at temperatures of 400-450°C. At these temperatures, which is just above the critical point, the corrosion resistance of Fe-Cr alloys was improved significantly with increasing Cr content and no detrimental effect of Cr could be observed even at the Cr contents as high as 40%. Keywords: supercritical water oxidation, hydrochloric acid, Fe-Cr alloy, Ni-Cr alloy, oxidation, dissolution, pitting corrosion, transpassive dissolution.
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for The Performance of Corrosion Resistant Ni-Cr-Mo Alloys in Concentrated Hydrochloric Acid
Available for download

51317--9639-The Performance of Corrosion Resistant Ni-Cr-Mo Alloys in Concentrated Hydrochloric Acid

Product Number: 51317--9639-SG
ISBN: 9639 2017 CP
Author: Suresh Divi
Publication Date: 2017
$20.00

This paper is to study the corrosion performance of various Ni based alloys in high concentrations of HCl acids below the boiling point. Nickel-based alloys C-276 (UNS N10276), C-22 (UNS N06022), C-2000 (UNS N06200), Hybrid-BC1 (UNS N10362) and B-3 (UNS N10675) were investigated.

 
Picture for 05334 Electrochemical Behavior of Nickel Alloys in
Available for download

05334 Electrochemical Behavior of Nickel Alloys in HCl Solutions Containing Oxidizing Impurities

Product Number: 51300-05334-SG
ISBN: 05334 2005 CP
Author: Nacera Sabrina Meck and Paul Crook, Haynes International; Raul B. Rebak, Lawrence Livermore National
$20.00
Picture for 01362 CORROSION MECHANISMS OF ALLOY N10276 IN
Available for download

01362 CORROSION MECHANISMS OF ALLOY N10276 IN HYDROTHERMAL HCL SOLUTIONS: FAILURE ANALYSIS AND EXPOSURE STUDIES

Product Number: 51300-01362-SG
ISBN: 01362 2001 CP
Author: J. A. Cline, P. A. Marrone, D. B. Mitton, R. M. Latanision, and J. W. Tester
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support