Article ID Journal Published Year Pages File Type
1468566 Corrosion Science 2015 8 Pages PDF
Abstract

•A rapid scratch electrode system in high temperature water has been built.•Repassivation kinetics of Alloy 690 was studied in high temperature water.•The slope of log i(t) vs. 1/Q(t) shows stress corrosion cracking susceptibility.

The scratch electrode system in high temperature high pressure (HTHP) water has been built. The design temperature and design pressure of this system are 350 °C and 20 MPa respectively, and the maximum scratch speed is 3.3 m/s. By using this scratch electrode system, the repassivation kinetics of Alloy 690 in high temperature pressurized water with different dissolved hydrogen (DH) at 300 °C is studied. The research results justify that the scratch electrode system is valid and the scratch technique in HTHP water is a new effective and reliable method to study the SCC susceptibility of nuclear materials.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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