Abstract
Owing to a possible future shortage of uranium sodium-cooled fast breeder reactors are becoming important. Tribological processes in these facilities, especially in their nuclear components, are of special interest to reactor designers. However, reactor-specific operating conditions do not provide any parameters suitable for establishing reliable working tribosystems between the mating interfaces of contacting components. The friction and wear behaviour of materials has been extensively investigated under special reactor conditions. Work is being carried out on the equipment criteria characteristics of the frictional systems, the surface macroroughness and the chemical reactivity of liquid sodium. The current state of knowledge concerning the selection of materials, the interpretation of test data and engineering design is surveyed.
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