Features of Wear of the Polytetrafluoroethylene and Commercial Composite F4K20 during Friction on Carbon and Alloy Steels

Resumo

The features of wear of polytetrafluoroethylene and the filled composite F4K20 based on it during friction on the carbon and alloy steels with calculation of the contact temperatures according to the original method are studied. The ranges of the contact temperatures and loads corresponding to them, under which the wear coefficient increases sharply during friction of the polymer and its composite on steel containing nickel as one of the alloy additives, are defined. It is shown that the fluorides formed on the friction surface under these conditions contribute to the formation and development of cracks, which leads to replacement of the wear mechanism.