Friction systems running in cryogenic environment are critical in respect to wear and frictional heat generation because in this temperature range, conventional lubricants can't be applied. In order to test the friction and wear behaviour of appropriate solid lubricants and wear resistant material combinations in cryogenic environment, including liquid hydrogen, special test rigs have been constructed. These devices provide test conditions for tribological investigations at temperatures ranging from 4.2 K to room temperature in liquid or gaseous environment at pressures between 10 -3 mbar and 20 bar. Investigations on polymers, composites and metals with and without coatings show that there is a broad variety of appropriate materials for cryogenic friction units, but the behaviour of austenitic steels in such systems gives an example of non sufficient knowledge in this field.
Low temperature tribology at the federal institute for materials research and testing (BAM)
Tiefemperaturtribologie an der Bundesanstalt für Materialforschung und -prüfung (BAM)
2001
4 Seiten, 4 Bilder, 20 Quellen
Aufsatz (Konferenz)
Englisch
Low temperature tribology at the Federal Institute for Materials Research and Testing (BAM)
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