@InProceedings{SerbenaZaFoLeSoGuUe:2008:FrWeNi,
               author = "Serbena, F. C. and Zaika, A. C. and Foerster, C. E. and Lepienski, 
                         C. M. and Soares J{\'u}nior, P. C. and Guimar{\~a}es, J. L. and 
                         Ueda, M{\'a}rio",
          affiliation = "{Universidade Estadual de Ponta Grossa} and {Universidade Estadual 
                         de Ponta Grossa} and {Universidade Estadual de Ponta Grossa} and 
                         DEFIS, Universidade Federal do Paran{\'a} and Departamento de 
                         Engenharia Mec{\^a}nica, Pontif{\'{\i}}cia Universidade 
                         Cat{\'o}lica and Laborat{\'o}rio de Tribologia-DEMEC, 
                         Universidade Federal do Paran{\'a} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Friction and Wear of Nitrogen Ion Implantation and Plasma 
                         Immersion Ion Implantation on AISI 304 Stainless Steel",
            booktitle = "Anais...",
                 year = "2008",
         organization = "Encontro SBPMat, 7.",
             keywords = "tribology, nitriding, ion implantation, plasma immersion ion 
                         implantation, austenitic steel, hardness.",
             abstract = "Friction and wear of AISI 304 austenitic stainless steel implanted 
                         with nitrogen by ion implantation (II) and plasma immersion ion 
                         implantation (PI3) were studied in this work. Ion implantations at 
                         room temperature were carried out at fluences from 2.6 x 1015 to 
                         4.9 x 1017 N+.cm-2 to produce a nitrogen plateau like (300 nm 
                         deep) at nominal atomic concentrations ranging from 1% to 27%. The 
                         PI3 was performed at 320°C and 400°C to avoid chromium depletion 
                         at grain boundaries and at different treatment times. The 
                         mechanical properties were characterized by instrumented 
                         indentation and reciprocating sliding tests under dry unlubricated 
                         condition at room temperature and low humidity. Wear rates were 
                         calculated from the resultant groove profiles obtained by 
                         perfilometry. Although ion implantation increased surface 
                         hardness, it had the deleterious effect of increasing wear. The 
                         friction coefficient variation with sliding distance suggests 
                         there is rupture of the ion implanted layer, which is rapidly worn 
                         out and the observed increase in wear rate is due to a three body 
                         abrasion process. On the other hand, samples submitted to PI3 
                         showed a decrease in wear with temperature and time. There is a 
                         smooth increase in the friction coefficient with sliding distance, 
                         suggesting the deeper modified layer produced by the PI3 process 
                         is more effective to improve wear resistance of AISI 304 steels.",
  conference-location = "Guaruj{\'a}, SP",
      conference-year = "28 set. - 02 out.",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}