Search
Filters

Conference Papers

View as
Sort by
Display per page
Picture for Laboratory Experimental Methods for Estimating Inhibition Performance of Corrosion Inhibitor for Deepwater Natural Gas Pipeline
Available for download
Picture for Localized Corrosion Behavior of Lean Duplex Stainless Steels in Chloride Containing Synthetic Tap Water
Available for download

Localized Corrosion Behavior of Lean Duplex Stainless Steels in Chloride Containing Synthetic Tap Water

Product Number: 51319-13280-SG
Author: Sang Won Cho
Publication Date: 2019
$20.00

Duplex stainless steel (DSS) is a material in the issue as it’s very excellent in corrosion resistance mechanical properties weldability in various environments as compared with common materials. Due to these characteristics DSS is applied to various industries such as petrochemical facilities offshore structures power plants etc. However since duplex stainless steel is expensive it has a limitation that it is difficult to apply it to equipment that needs to be replaced periodically. Compared to DSS lean duplex stainless steel (LDSS) has good formability and corrosion resistance while the reduced content of nickel molybdenum is superior in terms of economics. Therefore LDSS can be economically efficiently maintained and managed by applying it to equipment requiring periodic replacement such as a plate or a tube of a heat exchanger.At present in the district heating system a plate heat exchangers of austenitic SS material are installed and it is always exposed to chloride containing environments. Generally failures of the plate heat exchanger are occurred by the tap water of user side and it is mainly broken due to crevice induced corrosion cracking between the gasket and the heat exchanger pitting etc. As a result researches on localized corrosion of austenitic SS and DSS are actively underway in chloride containing environments. Whereas there are few researches on the localized corrosion behavior of LDSS in these environments. Therefore in this study we would like to evaluate the localized corrosion behavior of LDSS in the chloride containing synthetic tap water at 60 ℃ which is the operating condition of plate heat exchanger for district heating system.