Effect of Formic Acid on Corrosion Behavior of STBA24 Low-Alloyed Steel and Its Weldment in Simulated Boiler Water Containing Chloride Ions

• Niu Li-Bin

  Institute of Engineering, Academic Assembly, Shinshu University

• Kosaka Shoichi

  Institute of Engineering, Academic Assembly, Shinshu University

• Yoshida Masaki

  Naigai Chemical Products Co., Ltd.

• Suetake Yusuke

  Naigai Chemical Products Co., Ltd.

• Marugame Kazuo

  Naigai Chemical Products Co., Ltd.

抄録

The effect of formic acid (HCOOH) in simulated boiler water containing chloride ions (Cl⁻) on the corrosion behavior of STBA24 low-alloyed steel and its weldment was investigated using electrochemical corrosion tests, immersion corrosion tests and surface analyses. The addition of 100 ppm HCOOH into water containing 100 ppm Cl⁻ resulted in thicker films with poor corrosion resistance that were formed easily on both the base metal and the weldment of STBA24, even though pit initiation was inhibited within a short time. The results suggest that the presence of 100 ppm formic acid in the simulated boiler water containing 100 ppm chloride ions promotes corrosion of the materials tested.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 61 (9), 1775-1781, 2020-09-01

  公益社団法人 日本金属学会

キーワード

• corrosion
• low-alloyed steel
• weldment
• boiler water
• formic acid
• chloride

詳細情報

• CRID: 1390566775160827008
• NII論文ID: 130007890395
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mt-m2020129
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 030599744
• Web Site: http://id.ndl.go.jp/bib/030599744
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030599744
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/61/9/61_MT-M2020129/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可