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材料と環境 Vol. 73 (2024), No. 6

ISIJ International
belloff
オンライン版ISSN: 1881-9664
冊子版ISSN: 0917-0480
発行機関: Japan Society of Corrosion Engineering

Backnumber

  1. Vol. 74 (2025)

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  2. Vol. 73 (2024)

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  3. Vol. 72 (2023)

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  4. Vol. 71 (2022)

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  5. Vol. 70 (2021)

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  6. Vol. 69 (2020)

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  7. Vol. 68 (2019)

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  8. Vol. 67 (2018)

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  9. Vol. 66 (2017)

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  10. Vol. 65 (2016)

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  11. Vol. 64 (2015)

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  12. Vol. 63 (2014)

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  15. Vol. 60 (2011)

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  17. Vol. 58 (2009)

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  18. Vol. 57 (2008)

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  19. Vol. 56 (2007)

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  20. Vol. 55 (2006)

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  21. Vol. 54 (2005)

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  22. Vol. 53 (2004)

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  23. Vol. 52 (2003)

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  24. Vol. 51 (2002)

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  25. Vol. 50 (2001)

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  26. Vol. 49 (2000)

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  27. Vol. 48 (1999)

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  28. Vol. 47 (1998)

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  29. Vol. 46 (1997)

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  30. Vol. 45 (1996)

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  31. Vol. 44 (1995)

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  32. Vol. 43 (1994)

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  33. Vol. 42 (1993)

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  34. Vol. 41 (1992)

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  35. Vol. 40 (1991)

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キーワードランキング

25 Oct. (Last 30 Days)

材料と環境 Vol. 73 (2024), No. 6

固相窒素吸収法を用いて作製した高窒素ステンレス鋼の耐食性および接触抵抗に及ぼす昇温時の窒素分圧条件とTi添加量の影響

篠崎 一平, 田島 隆太郎, 中津山 國雄

pp. 143-148

DOI:

10.3323/jcorr.73.143

抄録

This study focuses on the production of high-nitrogen stainless steel by solution nitriding as a low-cost and mass-production of bipolar plates for PEFCs. We investigate the effect of nitrogen pressure during heating on the corrosion resistance and contact resistance of high-nitrogen stainless steels. In the solution nitriding of 22Cr ferritic stainless steel, higher nitrogen pressure promoted austenitization of the matrix phase and improved corrosion resistance. However, much higher nitrogen pressure promoted the coarsening of nitrides on the surface and reduced corrosion resistance.

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固相窒素吸収法を用いて作製した高窒素ステンレス鋼の耐食性および接触抵抗に及ぼす昇温時の窒素分圧条件とTi添加量の影響

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Bibtex

Ris

硫酸ニッケル含有セルロースナノファイバー分散塗料を塗布した発錆炭素鋼のさび層構造

野原 多朗, 向山 和孝, 倉敷 哲生, 花木 宏修, 山下 正人, 土谷 博昭, 藤本 慎司

pp. 149-152

DOI:

10.3323/jcorr.73.149

抄録

Rust structure on carbon steel coated with cellulose nanofiber dispersion resin containing nickel sulfate was investigated after corrosion under repeated dry and wet conditions. X-ray diffraction and electrochemical measurements were performed to evaluate the rust composition and anticorrosion properties of the rust layer. It was found that the proportion of stable α-FeOOH increased, especially with the addition of nickel sulfate. The decrease in corrosion rate might be due to the increase in mass fraction of α-FeOOH.

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mendeley

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硫酸ニッケル含有セルロースナノファイバー分散塗料を塗布した発錆炭素鋼のさび層構造

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mendeley

Bibtex

Ris

地層処分環境での炭酸塩濃度上限を想定した炭酸水素ナトリウム水溶液中における炭素鋼の応力腐食割れ感受性に及ぼす温度の影響

高橋 里栄子, 谷口 直樹

pp. 153-163

DOI:

10.3323/jcorr.73.153

抄録

Slow strain rate test （SSRT） was performed for a rolled carbon steel in NaHCO3 aqueous solutions at various temperatures in the range of 303-393 K. Selected concentrations of NaHCO3 between 0.1 and 0.5 mol･dm－3 are assumed to be the upper limit of carbonate concentration in groundwater in a geological disposal environment. As the results, no obvious influence of temperature on mechanical properties such as fracture strain ratio were observed, but SCC susceptibility based on ratio of SCC fracture area increased at relatively low temperatures of 303 K and 323 K. It was suggested that the reason for the higher SCC sensitivity of the steel at lower temperatures was due to slower repassivation at lower temperatures. Regarding the type of SCC, intergranular SCC was dominant at low temperatures and tended to transition to transgranular SCC at higher temperatures.

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mendeley

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地層処分環境での炭酸塩濃度上限を想定した炭酸水素ナトリウム水溶液中における炭素鋼の応力腐食割れ感受性に及ぼす温度の影響

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mendeley

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