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Thermodynamics of Inclusion Formation and Its Influence on the Corrosion ehavior of Cu Bearing Duplex Stainless Steels
- Authors
- Jeon, Soon-Hyeok; Kim, Soon-Tae; Lee, In-Sung; Park, Joo-Hyun; Kim, Kwang-Tae; Kim, Ji-Soo; Park, Yong-Soo
- Issue Date
- Mar-2011
- Publisher
- Japan Institute of Metals
- Keywords
- copper; duplex stainless steel; potentiostatic; scanning electron microscope (SEM); inclusion; pitting corrosion
- Citation
- Materials Transactions, v.52, no.3, pp 416 - 422
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Materials Transactions
- Volume
- 52
- Number
- 3
- Start Page
- 416
- End Page
- 422
- ISSN
- 1345-9678
1347-5320
- Abstract
- To elucidate the thermodynamics of inclusion formation and its influence on the corrosion behavior of Cu bearing duplex stainless steels, potentiodynamic and potentiostatic polarization tests, a SEM-EDS analysis of inclusions, and thermodynamic calculations of the formation of inclusions were carried out. While the resistance to general corrosion of the noble copper contained alloy-1.5Cu in a deaerated 2 M H2SO4 was higher than that of the alloy-BASE, the resistance to pitting corrosion of copper contained alloy-1.5Cu in a deaerated 0.5 N HCl + 1N NaCl and 30 mass% NaCl was lower than that of the alloy-BASE due to an increase of interface areas between inclusions and matrix acting as preferential pit initiation sites. The thermodynamic calculation for the formation of Cr-containing oxide inclusions was in good agreement with the experimental results. [doi:10.2320/matertrans.M2010355]
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Related Researcher
- Park, Joo Hyun
- ERICA 첨단융합대학 (ERICA 신소재·반도체공학전공)