The Influence of Radiation on Pit Solution Chemistry as it Pertains to the Transition from Metastable to Stable Pitting in Steels

Lillard, R. Scott ; Hanrahan, Robert J.

Los Alamos National Laboratory

关键词: Corrosion;    Irradiation;    37 Inorganic, Organic, Physical And Analytical Chemistry;    36 Materials Science;    Mitigation;   

DOI  :  10.2172/835035
RP-ID  :  EMSP-81989-2002
RP-ID  :  FG07-01ER63299
RP-ID  :  835035

美国|英语

来源: UNT Digital Library

【 摘 要 】

The goal of this research is to develop new methods to mitigate corrosion in DOE HLW tanks. To accomplish this, we will characterize the parameters that influence the transition from metastable pitting (also referred to as electrochemical noise) to stable pitting. These parameters include (1) the development of the critical pitting solution chemistry, (2) metastable pit morphologies and dynamics. Once we have evaluated these parameters, we will then examine the influence of gamma irradiation on pit stability. Ultimately we will have identified the role of both radiolytic reactions and inherent pit reactions in the transition from metastable to stable pitting. Having identified these reactions only then it will be possible to develop more specific and effective corrosion mitigation strategies.