[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.14773/cst.2011.10.2.060

Corrosion Properties of Duplex Stainless Steels - STS329LD and STS329J3L - for the Seawater Systems in Nuclear Power Plant

Chang, Hyun-Young (Korea Electric Power Corporation E&C)
Park, Heung-Bae (Korea Electric Power Corporation E&C)
Kim, Young-Sik (Materials Research Center for Energy and Green Materials Technology, School of Advanced Materials Engineering, Andong National University)
Ahn, Sang-Kon (POSCO)
Jang, Yoon-Young (ANSCO)

Publication Information

Corrosion Science and Technology / v.10, no.2, 2011 , pp. 60-64 More about this Journal

Abstract

Lean duplex stainless steels have been developed in Korea for the purpose of being used in the seawater systems of industry. There are also many important seawater systems in nuclear power plants. These systems supply seawater to cooling water condenser tubes, heat exchanger tubes, related pipes and chlorine injection systems. The flow velocity of some part of seawater systems in nuclear power plants is high and damages of components from corrosion are severe. The considered lean duplex stainless steels are STS329LD (20.3Cr-2.2Ni-1.4Mo) and STS329J3L (22.4Cr-5.7Ni-3Mo) and PRENs of them are 29.4 and 37.3 respectively. Physical, mechanical and micro-structural properties of them are evaluated, and electrochemical corrosion resistance is measured quantitatively in NaCl solution. Critical Pitting Temperatures (CPT)s are measured on these alloys and pit depths are evaluated using laser microscope. Long period field tests on these alloys are now being performed, and some results are going to be presented in the following study.

Keywords

duplex stainless steel; nuclear power plant; critical pitting temperature;

Citations & Related Records

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