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AbstractAbstract
[en] A compilation of published corrosion data on metals that have been suggested as canisters and overpack materials is presented. The data were categorized according to the solutions used in testing and divided into two parts: high-ionic strength solutions (such as seawater and brine) and low-ionic-strength waters (such as basalt and tuff waters). This distinction was made primarily because of the general difference in aggressiveness of these solutions with respect to general corrosion. A considerable amount of data indicated that titanium alloys have acceptably low uniform corrosion rates in anticipated repository sites; the other possible corrosion failure modes for titanium alloys, such as stress corrosion cracking and delayed failure due to hydrogen, have not been sufficiently studied to make any similar conclusions about lifetime with respect to these particular degradation processes. Other data suggested that iron-base alloys are sufficiently resistant to corrosion in basalt and tuff waters, although the effects of radiation and radiation combined with elevated temperature have not been reported in enough detail to conclusively qualify iron-base alloys for any particular barrier thickness in regard to uniform corrosion rate. The effect of overpack size on corrosion rate has been given little attention. A review of long-term underground data indicated that temperature and accessibility to oxygen were too different for deep geologic repositories to make the underground corrosion data directly applicable. However, the characteristics of corrosion attack, statistical treatment of data, and kinetics of corrosion showed that corrosion proceeds in a systematic and predictable way
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Oct 1982; 83 p; Available from NTIS, PC A05/MF A01 as DE83003825
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Report
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Numerical Data
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ALKALI METAL COMPOUNDS, ALLOYS, ALUMINIUM ALLOYS, CARBON ADDITIONS, CHEMICAL REACTIONS, CHLORIDES, CHLORINE COMPOUNDS, CHROMIUM ALLOYS, COPPER ALLOYS, CORROSION RESISTANT ALLOYS, DATA, HALIDES, HALOGEN COMPOUNDS, HYDROGEN COMPOUNDS, IGNEOUS ROCKS, INFORMATION, IRON ALLOYS, MANAGEMENT, NICKEL ALLOYS, NUMERICAL DATA, OXYGEN COMPOUNDS, ROCKS, SODIUM COMPOUNDS, STEELS, TRANSITION ELEMENT ALLOYS, WASTE DISPOSAL, WASTE MANAGEMENT, WATER
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