Patent ID: 6941854

Claim:
A pair of sliding elements for machine parts exposed to high-pressure and high-temperature steam, preferably a piston-cylinder arrangement for steam engines, having a first sliding element which has been produced from a material consisting essentially of carbon, preferably a piston or piston ring, and a second sliding element, preferably a cylinder liner or guide bush, characterized in that the material consisting essentially of carbon of the first sliding element is a synthetics fired but not graphitized carbon material which comprises graphitized carbon black and/or natural graphite as significant filler and whose pores are filled with metal, a metal alloy, a ceramic, a synthetic resin and/or pitch which has been carbonized, and in that the material of the second sliding element is an iron-containing, high-temperature-resistant material, preferably a material alloyed with chromium and/or nickel which is provided at least on the sliding surface with a nitride layer.