Case Histories of Steam Return-Line Corrosion and Conditions of Its Occurrence

スポンサーリンク

概要

• 論文の詳細を見る

• Case histories of steam return-line corrosion in buildings were organized in terms of the corrosion rate and the mode of attack, and the conditions of its occurrence were discussed. The maximum penetration rate ranged from less than 0.1 to 5.7 mm/y, either in the form of smooth thinning at around the bottom of horizontal lines or scattered pitting. The corrosion product which was thin if it existed was identified as Fe_3O_4 in most of the cases. The estimated partial pressure of carbon dioxide in steam return-lines was 10^<-4>atm at the highest, which was shown too low to cause significant corrosion. The observed high penetration rate can be explained by the existence of oxygen. The acidity of dissolved carbon dioxide provides a corrosion product free surface, allowing free access of dissolved oxygen to accelerate corrosive attack which is otherwise hindered to a significant degree by the formation of rust films.

• 前橋工科大学の論文
• 1998-04-09

著者

• 松島 巖

  Department Of Architecture

関連論文

• A Study on the Effect of Acid Rain on Atmospheric Corrosion of Carbon Steel
• Criteria for Continuous Active Growth of Localized Corrosion in Water Piping
• Estimation of Maximum Possible Penetration Rate of Localized Corrosion in Utility Piping
• A Comprehensive Mechanism of the Development of Protective Rust Layers on Weathering Steel
• Case Histories of Steam Return-Line Corrosion and Conditions of Its Occurrence

スポンサーリンク