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A Study on the Effect of Corrosion Resistance According to the Composition Variety of C, Cr, N in Duplex Stainless Steel  

Kim, Hyeong-Jin (Department of Metallurgical Engineering, Yeungnam University)
Cho, Kye-Hyun (Department of Metallurgical Engineering, Yeungnam University)
Jung, Jae-young (Research Institute of Industrial Science & Technology)
Publication Information
Corrosion Science and Technology / v.3, no.5, 2004 , pp. 179-186 More about this Journal
Abstract
Recently the alloy development of duplex stainless steel has been done. On this study we studied the effect of the corrosion resistance according to the composition variety of C, Cr, N in the alloy elements of duplex stainless steel. materials which have below 0.1[mm/year] corrosion rate enable to use for corrosion-resisting materials, generally. On this experiment we inspected the effect of the composition variety of C, Cr, N in duplex stainless steel and the heat treatment, which the condition was the water quenching after the heat treatment for 1hr. The experiment was done on the basis of the ASTM G48A test, Critical pitting temperature(CPT), and ASTM G-61(Electrochemical tests for cyclic polarization).
Keywords
duplex stainless steel; carbon; chromium; nitrogen; corrosion rate;
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