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07259 Repassivation of Localized Corrosion Damage Using Cold, Chlorinated Salt Water

Picture for 07259 Repassivation of Localized Corrosion Damage Using Cold, Chlorinated Salt Water
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Product Number: 51300-07259-SG
ISBN: 07259 2007 CP
Author: Paul M. Natishan, Roy Rayne, Farrel J. Martin, and Michelle Gaudett Koul
Publication Date: 2007
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A cold, chlorinated salt water treatment has been shown to improve the service life of duplex stainless steels (ss). In this work, the cold, chlorinated treatment was extended to determine if this treatment could be used improve the corrosion resistance of 304ss (UNS S30400). The results showed that the cold, chlorinated treatment did not increase the breakdown potential of 304ss when compared to 304ss samples that had been aged in ambient temperature salt water for the same period of time. The results also show that there were significant differences in the breakdown potential of 304ss that was aged in a 0.03M NaCl salt water solutions for time intervals between 1 hour and 48 hours. The breakdown potential increased with aging time. The difference between samples aged for 1 hour (shortest time) and 48 hours (longest time) was 191 mV. These are very interesting data from both experimental, especially for short aging times, and practical considerations.
A cold, chlorinated salt water treatment has been shown to improve the service life of duplex stainless steels (ss). In this work, the cold, chlorinated treatment was extended to determine if this treatment could be used improve the corrosion resistance of 304ss (UNS S30400). The results showed that the cold, chlorinated treatment did not increase the breakdown potential of 304ss when compared to 304ss samples that had been aged in ambient temperature salt water for the same period of time. The results also show that there were significant differences in the breakdown potential of 304ss that was aged in a 0.03M NaCl salt water solutions for time intervals between 1 hour and 48 hours. The breakdown potential increased with aging time. The difference between samples aged for 1 hour (shortest time) and 48 hours (longest time) was 191 mV. These are very interesting data from both experimental, especially for short aging times, and practical considerations.
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Picture for 07260 Corrosion of Engineering Materials in Seawater, Freshwater and 3.5% NaCl Solution with Additions of Clorine and Clorite
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07260 Corrosion of Engineering Materials in Seawater, Freshwater and 3.5% NaCl Solution with Additions of Chlorine and Chlorite

Product Number: 51300-07260-SG
ISBN: 07260 2007 CP
Author: Torfinn Havn
Publication Date: 2007
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Laboratory tests of corrosion potentials of engineering materials under influence of additions of chlorine and chlorite were measured. Materials were an Al-alloy, 316L stainless steel, 6Mo stainless, 3 duplex stainless steels, CuNi, Ti & carbon steel.
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