RT Journal Article SR Electronic A1 Doan, Thanh Van A1 Kusmič, David A1 Pospíchal, Miroslav A1 Tran, Quang Dung A1 Nguyen, Van Thuan T1 Friction and Wear Behaviour of 42CrMo4 Steel Treated by Tenifer, Hard Chrome and Plasma Nitriding Technologies JF Manufacturing Technology Journal YR 2017 VO 17 IS 2 SP 168 OP 174 DO 10.21062/ujep/x.2017/a/1213-2489/MT/17/2/168 UL https://journalmt.com/artkey/mft-201702-0007.php AB Concerning with effort to replace hard chrome plating cause of its ecological issues, this paper investigates the effects of surface technologies to wear resistance of ISO 42CrMo4 steel, which is popularly used in weapon production. After quenching and tempering, the experimental samples were treated by nitrocarburizing (tenifer), hard chrome plating and plasma nitriding technologies. Plasma nitriding was carried out with different gas mixture at 500ºC (plasma nitriding process) for 15h. The wear test based on principle "pin on disc" was performed to evaluate the coefficient of friction and the wear rate. The results were supplemented with surface hardness test and metallografical evaluation. The experiment results point out that nitrocarburizing and plasma nitriding improve wear resistance better than hard chrome plating.