Effect of nicotriding conditions on the operating properties of steels

摘要

Effect of saturating gas mediums based on the ammonia and endogas mixture on tribotechnical properties of structural steels subjected to combined two-step low temperature chemical-heat treatment is investigated. It's shown that at this treatment wear-resistant carbonitride coatings 15-25 um thickness and 750-930HV microhardness depending on nitrogen content in saturating atmosphere are being formed. It's stated that for improving antifriction properties of forming nicotriding coatings it's appropriate to treat them at 650℃ temperature in overheated vaporized atmosphere of molibdate ammonia.