Pitting corrosion resistance of martensite of AISI 1045 steel and the beneficial role of interstitial carbon

Mariko Kadowaki, Izumi Muto, Yu Sugawara, Takashi Doi, Kaori Kawano, Nobuyoshi Hara

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The pitting corrosion resistance of AISI 1045 carbon steel with as-quenched, tempered, and low-carbon martensitic microstructures was investigated in boric-borate buffer solutions with and without NaCl. Analysis by micro-scale polarization found that tempering and decarburizing treatments decreased the pitting corrosion resistance of as-quenched martensite. The high corrosion resistance of the as-quenched martensite was likely due to the large amount of interstitial carbon. The pitting corrosion resistances of asquenched martensite, primary ferrite, and pearlite were compared using micro-scale polarization measurements. It was determined that the pitting corrosion resistances of the typical steel structures were ordered as follows: (high) as-quenched martensite > tempered martensite ∼ primary ferrite > pearlite (low). The pitting corrosion resistance of steel was shown to depend on its microstructure.

本文言語English
ページ(範囲)C962-C972
ジャーナルJournal of the Electrochemical Society
164
14
DOI
出版ステータスPublished - 2017

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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