@Article{FernandesMandOlivUeda:2014:MePrNi,
author = "Fernandes, Bruno Bacci and Mandl, S. and Oliveira, Rogerio de
Moraes and Ueda, Mario",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Leibniz
Inst Oberflachenmodifizierung} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Mechanical properties of nitrogen-rich surface layers on SS304
treated by plasma immersion ion implantation",
journal = "Applied Surface Science",
year = "2014",
volume = "310",
number = "SI",
pages = "278--283",
month = "Aug.",
keywords = "Stainless steel, Plasma immersion ion implantation, Tribological
properties, Hardness.",
abstract = "The formation of hard and wear resistant surface regions for
austenitic stainless steel through different nitriding and
nitrogen implantation processes at intermediate temperatures is an
established technology. As the inserted nitrogen remains in solid
solution, an expanded austenite phase is formed, accounting for
these surface improvements. However, experiments on long-term
behavior and exact wear processes within the expanded austenite
layer are still missing. Here, the modified layers were produced
using plasma immersion ion implantation with nitrogen gas and had
a thickness of up to 4 pm, depending on the processing
temperature. Thicker layers or those with higher surface nitrogen
contents presented better wear resistance, according to detailed
microscopic investigation on abrasion, plastic deformation,
cracking and redeposition of material inside the wear tracks. At
the same time, cyclic fatigue testing employing a nanoindenter
equipped with a diamond ball was carried out at different absolute
loads and relative unloadings. As the stress distribution between
the modified layer and the substrate changes with increasing load,
additional simulations were performed for obtaining these complex
stress distributions. While high nitrogen concentration and/or
thicker layers improve the wear resistance and hardness, these
modifications simultaneously reduce the surface fatigue
resistance.",
doi = "10.1016/j.apsusc.2014.04.142",
url = "http://dx.doi.org/10.1016/j.apsusc.2014.04.142",
issn = "0169-4332",
label = "isi 2014-11 FernandesMandOlivUeda:2014:MePrNi",
language = "en",
targetfile = "Fernandes_Mechanical.pdf",
urlaccessdate = "27 abr. 2024"
}