Effects of High Energy Proton Radiation on the Corrosion of Materials.

Lillard, R. S. ; Gac, F. ; Paciotti, M. ; Ferguson, P. ; Daemen, L.

Technical Information Center Oak Ridge Tennessee

关键词: Corrosion;    Materials testing;    Proton beams;    Radiation effects;    Spectroscopy;   

RP-ID  :  PB2001105742

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

This paper presents a summary of our current efforts to characterize the real-time corrosion rates of materials during 800 MeV proton radiation at currents up to 0.4 mA. Specially designed corrosion probes, which incorporated ceramic seals, were mounted in flow tubes on a water manifold that allowed samples to be directly exposed to the proton beam at the Los Alamos Neutron Science Center. The water system that supplied the manifold provided a means for controlling water chemistry, measuring dissolved hydrogen concentration, and measuring the effects of water radiolysis and water quality on corrosion rate. Real-time corrosion rate measurements during proton irradiation showed an exponential increase in corrosion rate with proton beam current. In addition, for any given material type, a trend in corrosion rate with probe location relative to the beam centerline was observed. These results are discussed within the context of particle type, particle flux, and energy deposition.