%0 Journal Article
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%@nexthigherunit 8JMKD3MGPCW/3ET2RFS
%@archivingpolicy denypublisher denyfinaldraft24
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%3 improvements tribological.pdf
%B Surface and Coatings Technology
%@dissemination WEBSCI; PORTALCAPES.
%2 sid.inpe.br/iris@1916/2005/11.08.16.18.10
%4 sid.inpe.br/iris@1916/2005/11.08.16.18
%X Alloys made of CrCoMo and CrNiMo are commonly used materials with UHMWPE (Ultra High Molecular Weight Polyethylene) as joint couple components in the orthopedic prosthesis. We have applied the plasma immersion ion implantation (PIII) to the samples made of these alloys to enhance their tribological properties and hence to make it possible to extend considerably their lifetime as joint components when implanted in humans. As a result, we obtained CrCoMo surface with 70% improvement in hardness and 10% in modulus of elasticity and CrNiMo surface with 250% improvement in hardness and practically no change in modulus. Peak nitrogen concentrations as high as 40% and 30% were achieved by nitrogen PHI for CrCoMo and CrNiMo, respectively. Formation Of gamma(N) phases in CrNiMo sample was clearly seen by XRD. (c) 2005 Elsevier B.V. All rights reserved. .
%8 Oct.
%N 1-4
%T Improvements of tribological properties of CrNiMo and CrCoMo alloys by nitrogen plasma immersion ion implantation
%K plasma immersion ion implantation, tribological properties, prosthesis.
%@secondarytype PRE PI
%@group LAP-INPE-MCT-BR
%@copyholder SID/SCD
%@secondarykey INPE-13131-PRE/8390
%@issn 0257-8972
%@affiliation Instituto Nacional de Pesquisas Espaciais, Laboratório Associado de Plasmas, (INPE, LAP),
%@affiliation Ctr Rossendorf, Inst Ion Beam Phys & Mat Res, Dresden, Germany,
%@affiliation Univ Fed Parana, Dept Phys, Curitiba, Parana BR-80060000 Brazil,
%@language English
%P 594-597
%D 2005
%V 200
%A Ueda, Mário,
%A Berni,  L. A.,
%A Castro,  R. M.,
%A Reuther,  H.,
%A Lepienski,  C. M.,
%A Soares,  P. C.,
%@area FISPLASMA