Abstract
Development of wear-proof materials for low temperature uses is expected to accompany the advances in cryogenic technologies. In the present paper, the results of sliding wear of several kinds of FCC alloys and Ti alloys against a 0.45%C martensitic steel and a SUS316-type stainless steel in liquid N2 and O2 are reported.
(1) The wear loss in liquid N2 or O2 was about 1/10 of that in air at R.T..
(2) The general tendency that the harder materials are the more wear-proof was recognized. However, the wear loss of some materials increased by age hardening, and the materials containing insoluble carbides were easily abrased.
(3) The wearing phenomena in liquid N2 or O2 may be good examples to which the "delamination" theory proposed by Suh et al. can be applied.
