Improvement of the tribological characteristics of AISI 8620, 8640 and 52100 steels through thermo-reactive treatments - Triani, Rafael Magalhães; Mariani, Fábio Edson; Gomes, Lucas Fuscaldi De Assis; Oliveira, Pedro Gabriel Bonella de; Totten, George E; Casteletti, Luiz Carlos (Lubricants, 2019)