TY - JOUR
T1 - Initial morphology of atmospheric corrosion on Ni and Cr additive steel
AU - Noda, Kazuhiko
AU - Yamamoto, Masahiro
AU - Masuda, Hiroyuki
AU - Kodama, Toshiaki
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - The corrosion characterization of the low alloy steel under seashore environment depends on the alloy elements. Rusting process and corrosion behavior of pure iron, Fe-3 mass%Ni and Fe-3 mass%Cr low alloy steel under corrosion cycle test were investigated by surface observation using optical microscope, laser microscope and AFM. Both Ni and Cr were effective to decrease the corrosion rate and the filiform corrosion type that is the same to the case of pure iron occurred on the alloys during rusting process. Form the result of removing the rust, the pitting corrosion was appeared under the rust on the Cr additive steel although the general corrosion occurred in the case of pure iron and Ni additive alloy. The difference of the corrosion type was explained by hydrolysis equilibrium. Fe and Ni anodic dissolution did not make the pH decline. When the anodic dissolution of Cr was carried out, it is easy to decline pH and severe condition was achieved at the local site. Therefore, localized corrosion produced on the Fe-Ce alloy.
AB - The corrosion characterization of the low alloy steel under seashore environment depends on the alloy elements. Rusting process and corrosion behavior of pure iron, Fe-3 mass%Ni and Fe-3 mass%Cr low alloy steel under corrosion cycle test were investigated by surface observation using optical microscope, laser microscope and AFM. Both Ni and Cr were effective to decrease the corrosion rate and the filiform corrosion type that is the same to the case of pure iron occurred on the alloys during rusting process. Form the result of removing the rust, the pitting corrosion was appeared under the rust on the Cr additive steel although the general corrosion occurred in the case of pure iron and Ni additive alloy. The difference of the corrosion type was explained by hydrolysis equilibrium. Fe and Ni anodic dissolution did not make the pH decline. When the anodic dissolution of Cr was carried out, it is easy to decline pH and severe condition was achieved at the local site. Therefore, localized corrosion produced on the Fe-Ce alloy.
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U2 - 10.2320/jinstmet1952.64.5_319
DO - 10.2320/jinstmet1952.64.5_319
M3 - Article
AN - SCOPUS:0033705894
VL - 64
SP - 319
EP - 322
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 5
ER -