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

Lillard, R. S. ; Hanrahan, R. J.

Technical Information Center Oak Ridge Tennessee

关键词: Radioactive waste management;    Radioacative waste tanks;    Corrosion;    Chemistry;    Pitting;   

RP-ID  :  DE2004835035

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports 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.