Localized Corrosion of Ni-Cr-Fe Overlay Weld Alloys with Dispersed NbC in Sodium Chloride Solution
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- Takatani Yasuyuki
- Industrial Research Institute of Hyogo Prefacture
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- Tomita Tomoki
- Industrial Research Institute of Hyogo Prefacture
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- Hashizume Genzo
- Industrial Research Institute of Hyogo Prefacture
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- Harada Yoshio
- Tocalo Co., Ltd.
Bibliographic Information
- Other Title
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- 塩化ナトリウム水溶液中におけるNbC分散型Ni-Cr-Fe合金肉盛材の局部腐食
- エンカ ナトリウム スイヨウエキチュウ ニ オケル NbC ブンサンガタ Ni
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Description
Pitting potentials in sodium chloride solution have been measured potentiodynamically for Ni-Cr-Fe overlay weld alloys with dispersed NbC on a carbon steel formed by plasuma transferred arc method. The presence of NbC in the alloys with Fe content more than 40% caused an electronegative shift in pitting potential, and the morphology of the localized attack was found hemisphere or heneycomb. With Fe content less than 5%, the pits of the alloys containing no NbC had crystallographic attack with Cr-rich phases undissolved. As NbC content was increased, the pitting potential shifted in electropositive direction and the anodic dissolution was uniform with no pitting. The Ni-Cr-Fe overlay weld alloys with dispersed 40% NbC was coverded with a Cr-Nb-Fe-C composition film after anodizing at 1.0V vs. Ag/AgCl and then had higher resistance to pitting corrosion.
Journal
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- CORROSION ENGINEERING
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CORROSION ENGINEERING 38 (8), 422-428, 1989
Japan Society of Corrosion Engineering
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Details 詳細情報について
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- CRID
- 1390001206258841856
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- NII Article ID
- 130004732120
- 130006025361
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- NII Book ID
- AN00225595
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- ISSN
- 18841155
- 00109355
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- NDL BIB ID
- 3247897
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed