A-45 冷温水配管の亜鉛と炭素鋼の極性逆転による腐食事例の解析

• 山手 利博

  (株)竹中工務店

• 大久保 泰和

  (株)竹中工務店

書誌事項

タイトル別名

• A-45 A case study of corrosion by the reversal phenomenon of electrical potential between : the zinc and the carbon steel in galvanized steel pipe for chilled and hot water

抄録

The first water leak was generated in the screw in the branch pipe later about three years the use beginning in galvanized steel pipe for chilled and hot water. Afterwards, the water leak happened in succession almost in branch pipes. Corrosion pits of bowl type were caused by generating the tubercles in piping in some places under that, and it caused the water leak. It is guessed the local corrosion by the electric potential reversal of the zinc and the carbon steel from the electric potential comparison with a corrosion part and peripheral health part (zinc plating layer remaining part).In this report, the state of corrosion of piping and the measurement of the electric potential are shown by the cut sample pipes, and the water analyses results are shown.

収録刊行物

• 空気調和・衛生工学会大会　学術講演論文集

  空気調和・衛生工学会大会　学術講演論文集 2009.2 (0), 823-826, 2009

  公益社団法人 空気調和・衛生工学会

詳細情報

• CRID: 1390282680220633984
• NII論文ID: 110009776906
• DOI: 10.18948/shasetaikai.2009.2.0_823
• ISSN: 24242179
• ISSN: 18803806
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可