| Campo DC | Valor | Idioma |
|---|
| dc.contributor.author | Gobbi, Silvio José | - |
| dc.contributor.author | Ferreira, Jorge Luiz de Almeida | - |
| dc.contributor.author | Araújo, José Alexander | - |
| dc.contributor.author | André, Paul | - |
| dc.contributor.author | Henriques, Vinicius André Rodrigues | - |
| dc.contributor.author | Airoldi, Vladimir Jesus Trava | - |
| dc.contributor.author | Silva, Cosme Roberto Moreira da | - |
| dc.date.accessioned | 2026-03-16T15:03:14Z | - |
| dc.date.available | 2026-03-16T15:03:14Z | - |
| dc.date.issued | 2024-11 | - |
| dc.identifier.citation | GOBBI, Silvio José et. al. The Effect of DLC Surface coatings on microabrasive wear of Ti-22Nb-6Zr obtained by powder metallurgy. Coating, [S.l.], v. 14, 2024. DOI: https://doi.org/10.3390/coatings14111396. | pt_BR |
| dc.identifier.uri | http://repositorio.unb.br/handle/10482/54262 | - |
| dc.language.iso | eng | pt_BR |
| dc.publisher | MDPI | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.title | The Effect of DLC Surface coatings on microabrasive wear of Ti-22Nb-6Zr obtained by powder metallurgy | pt_BR |
| dc.type | Artigo | pt_BR |
| dc.subject.keyword | Biomateriais | pt_BR |
| dc.subject.keyword | Revestimento de carbono tipo diamante | pt_BR |
| dc.subject.keyword | Titânio bioinerte | pt_BR |
| dc.subject.keyword | Desgaste microabrasivo | pt_BR |
| dc.rights.license | (CC-BY) © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | pt_BR |
| dc.identifier.doi | https://doi.org/10.3390/coatings14111396 | pt_BR |
| dc.relation.publisherversion | https://www.mdpi.com/2079-6412/14/11/1396 | pt_BR |
| dc.description.abstract1 | Titanium alloys have a high cost of production and exhibit low resistance to abrasive wear.
The objective of this work was to carry out diamond-like carbon (DLC) coating, with dissimilar
thicknesses, on Ti-22Nb-6Zr titanium alloys produced by powder metallurgy, and to evaluate its
microabrasive wear resistance. The samples were compacted, cold pressed, and sintered, producing
substrates for coating. The DLC coatings were carried out by PECVD (plasma-enhanced chemical
vapor deposition). Free sphere microabrasive wear tests were performed using alumina (Al2O3
)
abrasive suspension. The DLC-coated samples were characterized by scanning electron microscopy
(SEM), Vickers microhardness, coatings adhesion tests, confocal laser microscopy, atomic force
microscopy (AFM), and Raman spectroscopy. The coatings did not show peeling-off or delamination
in adhesion tests. The PECVD deposition was effective, producing sp2 and sp3 mixed carbon
compounds characteristic of diamond-like carbon. The coatings provided good structural quality,
homogeneity in surface roughness, excellent coating-to-substrate adhesion, and good tribological
performance in microabrasive wear tests. The low wear coefficients obtained in this work demonstrate
the excellent potential of DLC coatings to improve the tribological behavior of biocompatible titanium
alloy parts (Ti-22Nb-6Zr) produced with a low modulus of elasticity (closer to the bone) and with
near net shape, given by powder metallurgy processing. | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Department of Mechanical Engineering | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Department of Mechanical Engineering | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Department of Mechanical Engineering | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Department of Mechanical Engineering | pt_BR |
| dc.contributor.affiliation | Aeronautics Institute of Technology, Department of Aerospace Science and Technology | pt_BR |
| dc.contributor.affiliation | National Institute of Research | pt_BR |
| dc.contributor.affiliation | University of Brasilia, Department of Mechanical Engineering | pt_BR |
| dc.description.unidade | Faculdade de Tecnologia (FT) | pt_BR |
| dc.description.unidade | Departamento de Engenharia Mecânica (FT ENM) | pt_BR |
| Aparece nas coleções: | Artigos publicados em periódicos e afins
|
