@Article{CarreriOlOlSiUeSiPi:2014:PhFoMe,
author = "Carreri, F. C. and Oliveira, R. M. and Oliveira, A. C. and Silva,
M. M. N. F. and Ueda, M{\'a}rio and Silva, M. M. and Pichon, L.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)}
and {Institut Pprime}",
title = "Phase formation and mechanical/tribological modification induced
by nitrogen high temperature plasma based ion implantation into
molybdenum",
journal = "Applied Surface Science",
year = "2014",
volume = "310",
pages = "305--310",
keywords = "Alumina, Emission spectroscopy, Friction, Glow discharges,
Hardness, Molybdenum, Nitrides, Nitrogen, Wear of materials, X ray
diffraction, Glow-discharge optical emission spectroscopy, High
temperature, High-temperature plasmas, Plasma-based ion
implantation, Surface mechanical properties, Technological
applications, Transition metal nitrides, X-ray diffraction
spectrum, Ion implantation.",
abstract = "Transition metal nitrides present high hardness, good wear
resistance and chemical stability. The formation of a surface
layer of these materials on different types of substrates can
improve surface properties without changing bulk characteristics.
Molybdenum is used in many technological applications and the
search for ways to effectively improve its properties is
justified. In this work nitrogen ions were implanted into
molybdenum by means of high temperature plasma based ion
implantation (HTPBII), in order to produce a layer of molybdenum
nitride on the surface of the material. The treatment was
performed in the temperature range of 800-1200°C, for 1 h. X-ray
diffraction spectra showed the presence of the cubic-Mo2N phase in
most of the samples. The tetragonal-Mo2N phase was also observed,
depending on treatment conditions. Glow discharge optical emission
spectroscopy was used to study the composition and thickness of
the nitride layer. A 12 ¼m thick Mo2N layer was observed for
samples treated at 1100°C, although beyond this temperature
threshold, a significant amount of nitride can no longer be
produced. In relation to the surface mechanical properties, a
ninefold increase in surface hardness was obtained, as well as a
decrease in the friction coefficient. Wear against an alumina ball
was not observed.",
doi = "10.1016/j.apsusc.2014.03.086",
url = "http://dx.doi.org/10.1016/j.apsusc.2014.03.086",
issn = "0169-4332",
label = "scopus 2014-11 CarreriOlOlSiUeSiPi:2014:PhFoMe",
language = "en",
targetfile = "Carreri_phase.pdf",
urlaccessdate = "01 maio 2024"
}