%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ET2RFS
%@archivingpolicy denypublisher denyfinaldraft24
%@usergroup administrator
%3 62.pdf
%B Surface and Coatings Technology
%@dissemination WEBSCI; PORTALCAPES.
%X Plasma immersion nitrogen implantation of Ti6Al4V (TAV) alloy was carried out to improve the surface tribological properties of test samples for artificial heart valves. Our results show that a good implantation with nitrogen peak concentration of 40% was achieved but with only approximately 50 nm implanted layer, after 60 min of treatment. Longer treatments showed no improvement in the retained dose, probably due to sputtering effects. However, both significant reduction of friction coefficient and increase in hardness was seen even for such a shallow implantation. Furthermore, the hardness improvement extended to regions much deeper than the implanted layer. Improvements of the wear resistance of such nitrogen implanted Ti alloy is expected, increasing considerably the useful lifetime of components made of TAV which is finding widespread use in biomedical and aerospace applications.
%8 June
%T Improvement of tribological properties of Ti6Al4V by nitrogen plasma immersion ion implantation
%K tecnologia de plasma, plasma tecnology, plasma immersion ion implantation, titanium alloy, nitrogen implantation, three-dimensional ion implantation, nanohardness, industrial components, surface modification.
%@secondarytype PRE PI
%@group LAP-INPE-MCT-BR
%@copyholder SID/SCD
%@secondarykey INPE-13535-PRE/8748
%@issn 0257-8972
%2 sid.inpe.br/marciana/2003/08.15.15.38
%@affiliation nst Nacl Pesquisas Espaciais, Lab Associado Plasma, BR-12201 Sao Jose Dos Campos, SP, Brazil,
%@affiliation Inst Tecnol Aeronaut, Dept Engn Mecan, Sao Jose Dos Campos, Brazil,
%@affiliation Inst Tecnol Aeronaut, Dept Fis, Sao Jose Dos Campos, Brazil,
%@affiliation Rossendorf Inc, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany,
%@affiliation Himeji Inst Technol, Himeji, Hyogo 67122, Japan,
%@affiliation Univ Fed Parana, Dept Fis, BR-80060000 Curitiba, Parana, Brazil,
%P 408-410
%4 sid.inpe.br/marciana/2003/08.15.15.37
%D 2003
%V 69
%A Ueda, Mário,
%A Silva, M. M.,
%A Otani, C.,
%A Reuther, H.,
%A Yatsuzuka, M.,
%A Lepienski, C. M.,
%A Berni, Luiz Ângelo,
%@area FISPLASMA