@Article{MelloUeSiRePiLe:2009:TrEfPl,
author = "Mello, Carina Barros and Ueda, M{\'a}rio and Silva, M. M. and
Reuther, H. and Pichon, L. and Lepienski, C. M.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Institute of Ion
Beam Physics and Materials Research} and {Universit{\'e} de
Poitiers} and {Universidade Federal do Paran{\'a} (UFPR)}",
title = "Tribological effects of plasma immersion ion implantation heating
treatments on Ti-6Al-4V alloy",
journal = "Wear",
year = "2009",
volume = "267",
number = "WEARPart 2 Sp. Iss. SI",
pages = "867--873",
month = "Jun.",
keywords = "Ti-6Al-4V, Plasma immersion ion implantation, Pin-on-disc, Wear,
surface modification, corrosion behavior, titanium-alloys,
ti6al4v, nitridation, improvemen.",
abstract = "In order to achieve improved surface in components with high
reliability required by the tool or metallurgical industries by
means of plasma immersion ion implantation (PIII), it is necessary
to obtain quite thick treated layers with reasonable thickness
uniformity. One effective way to achieve such a thick
nitrogen-rich layer in Ti-6Al-4V alloy is to run PIII process in
high temperatures of about 800 degrees C. In these experiments, we
heated the sample-holder and subjected the Ti-6Al-4V samples to
nitrogen glow discharge PIII with relatively low peak voltages (5
kV). We also treated the Ti-6Al-4V samples by the traditional PIII
method, increasing slowly the high voltage pulse intensities, and
at the end of processing, reaching temperatures of up to 350
degrees C. These modes of treatments were compared with respect to
nitrogen implantation profiles, tribological and mechanical
properties. Nitrogen profiles measured by AES showed that
auxiliary heating leads to richer and deeper layers. The best
results were obtained for the samples treated for 4h that, after
25,000 cycles in unlubricated pin-on-disk test, presented very
small wear (reduction of 89%). In spite of friction coefficient
being higher in the beginning of the test, probably due to the
increase of the average roughness (Rms) in the surface of the
treated material, it decreases when the rough surface wears away,
due to the reduction of frictional force necessary to slide the
pin on the sample. The material treated at 800 degrees C presents
high wear resistance, which is desired in this alloy, that
normally possesses excellent mechanical properties, however, poor
tribological properties.",
doi = "10.1016/j.wear.2008.12.103",
url = "http://dx.doi.org/10.1016/j.wear.2008.12.103",
issn = "0043-1648",
language = "en",
urlaccessdate = "15 jun. 2024"
}