Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/52386
Título: | Tribocorrosion behavior of veneering biomedical PEEK to Ti6Al4V structures |
Autor(es): | Sampaio, Miguel Ângelo Guimarães Buciumeanu, Mihaela Henriques, Bruno Silva, Filipe Samuel Souza, J. C. M. Gomes, J. R. |
Palavras-chave: | Biotribology Tribocorrosion Ti6Al4V PEEK Sliding wear |
Data: | 2016 |
Editora: | Elsevier |
Revista: | Journal of the Mechanical Behavior of Biomedical Materials |
Resumo(s): | In dentistry, prosthetic structures must be able to support masticatory loads combined with a high biocompatibility and wear resistance in the presence of a corrosive environment. In order to improve the simultaneous wear and corrosion response of highly biocompatible prosthetic structures, a veneering poly-ether-ether-ketone (PEEK) to Ti6Al4V substrate was assessed by tribocorrosion analyses under conditions mimicking the oral environment. Samples were synthesized by hot pressing the PEEK veneer onto Ti6Al4V cylinders. The tribocorrosion tests on Ti6Al4V or PEEK/Ti6Al4V samples were performed on a reciprocating ball-on-plate tribometer at 30 N normal load, 1 Hz and stroke length of 3 mm. The tests were carried out in artificial saliva at 37 ºC. Open circuit potential (OCP) was measured before, during and after reciprocating sliding tests. The worn surfaces were characterized by scanning electron microscopy. The results revealed a lower wear rate on PEEK combined with a lower coefficient of friction (COF), when compared to Ti6Al4V. In fact, PEEK protected Ti6Al4V substrate against the corrosive environment and wear avoiding the release of metallic ions to the surrounding environment. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/52386 |
DOI: | 10.1016/j.jmbbm.2015.09.010 |
ISSN: | 1751-6161 |
e-ISSN: | 1878-0180 |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S175161611500346X |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | DEM - Artigos em revistas de circulação internacional com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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M Sampaio et al_J of the Mech Behavior of Biomedical Materials 54_2016_123-130.pdf Acesso restrito! | 1,39 MB | Adobe PDF | Ver/Abrir |