WEAR RESISTANCE CHARACTERISTICS OF THERMO - CHEMICALLY TREATED STRUCTURAL STEELS

摘要

The article presents results of investigations of wear resistance by friction, employing the "3 cylinder - cone" method, of selected structural steels subjected to given thermo-chemical treatment, i.e. nitriding, carburizing, and precipitation hardening after nitriding. The investigated steels were C45, 21NiCrMo2, 18HGT, and 41Cr4. These materials, after thermo-chemical treatment undergo metallurgical characteristics of diffusion layers formed on steel. It was observed that proportionality exists between their wear resistance and the value of surface unit loading. Moreover, the friction - wear properties of these layers exhibited certain differences, depending on their microstructure and chemistry.