%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ET2RFS
%@archivingpolicy denypublisher denyfinaldraft24
%@dissemination WEBSCI; PORTALCAPES; COMPENDEX.
%@usergroup administrator
%@usergroup banon
%@usergroup simone
%3 surface modification of ti6a14v.pdf
%B Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
%2 sid.inpe.br/mtc-m17@80/2007/11.13.13.50.15
%4 sid.inpe.br/mtc-m17@80/2007/11.13.13.50
%X The present work is aimed to analyzing the influence of the plasma potential in the efficiency of plasma immersion ion implantation (PIII) process with nitrogen, at high temperatures (550 degrees C and 800 degrees C), applied to the Ti6Al4V alloy to increase its wear resistance. Treatments with plasma potentials (PP) at 420 V and 90 V were carried out. In the first case, in accordance with AES (Auger Electron Spectroscopy) analysis, nitrogen rich layers of 100 nm and 150 nm of thickness had been obtained, for total treatment times of 60 min and 120 min, respectively. For the treatments with lower PP of 90 V, the treated layers thicknesses have been measured by GDOS (Glow Discharge Optical Spectroscopy) and their values are 1 mu m and 1.5 mu m for treatments of 120 min and 240 min, respectively. The hardness values were determined for the samples treated with high PP by nanoindentation technique and a significant increase was observed for this treatment, reaching 11 GPa (60 min) and 19 GPa (120 min), which can be compared to 3.5-4.0 GPa obtained for the untreated samples. Pin-on-disk wear tests show that wear resistance increases after all these treatments. The friction coefficient as well as the wear rates are measured with a tribometer.
%8 Apr.
%T Surface modification of Ti6Al4V alloy by PIII at high temperatures: Effects of plasma potential
%@secondarytype PRE PI
%K Ti6Al4V, plasma immersion ion implantation, surface modification, nitrogen, high temperature treatment, plasma potential , ION-IMPLANTATION, TITANIUM.
%@group
%@group LAP-INPE-MCT-BR
%@secondarykey INPE-14903-PRE/9817
%@copyholder SID/SCD
%@issn 0168-583X
%@issn 0167-5087
%@affiliation Divisão de Engenharia Mecânica-Aeronáutica, Instituto Tecnológico de Aeronáutica
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Laboratoire de Métallurgie Physique
%@affiliation Institute of Ion Beam Physics and Materials Research
%@affiliation Departamento de Física. Universidade Federal do Paraná (UFPR)
%P 722-726
%D 2007
%V 257
%A Silva, M. M.,
%A Ueda, M.,
%A Pichon, L.,
%A Reuther, H.,
%A Lepienski, C. M.,
%@area FISPLASMA