Abstract
One of the numerous possibilities to decrease friction and wear of sliding surfaces consists of the application of two-step (so called duplex) technologies. A novel duplex technology of gas sulphonitriding of a 41CrAlMo7 steel with subsequent deposition of a low friction MoS2(Ti,W) coating by means of non-reactive magnetron deposition is described in the present paper. A pin and vee block geometry and a relevant Falex apparatus were chosen for implementation of a linear friction contact under heavy loadings. For comparison, five other treatments of machine parts applied in the industry were used in the paper as well. As a result of the tests, only the specimens after the proposed novel duplex treatment based on sulphonitriding and a low friction MoS2(Ti,W) coating deposition outlasted the full load of 3500 N during 6 min without any failure from all the six different treatments investigated in the work.
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