reliminary tribo-electrochemical and biological responses of the Ti-TiB-TiCx in-situ composites intended for load-bearing biomedical implant

Autor(es)

Sousa, L. ^{[1, 2]} ; Alves, A. C. ^{[1, 3]} ; Costa, N. A. ^{[4, 5]} ; Gemini-Piperni, S. ^{[6, 7, 8]} ; Rossi, A. L. ^[6] ; Ribeiro, A. R. ^[9] ; Simoes, S. ^[10] ; Toptan, F. ^{[11, 1]}

Afiliação do(s) autor(es):Mostrar menos -

^[1] Univ Minho, Ctr MicroElectroMech Syst, CMEMS, UMinho, Campus Azurem, Guimaraes - Portugal

^[2] Univ Porto, DEMM Dept Met & Mat Engn, Fac Engn, Porto - Portugal

^[3] Univ Minho, Inst Biomat, IBTNEuro European Branch Inst Biomat Tribocorrosi, Dept Eng Mecan, P-48000580 Guimaraes - Portugal

^[4] UNESP Univ Estadual Paulista, Fac Ciencias, BR-17033360 Bauru, SP - Brazil

^[5] IBTN Br Brazilian Branch, Inst Biomat Tribocorros & Nanomed, BR-17033360 Bauru, SP - Brazil

^[6] Ctr Brasileiro Pesquisas Fisicas CBPF, R Dr Xavier Sigaud, 150 Urca, Rio De Janeiro, RJ - Brazil

^[7] Univ Grande Rio, Rua Prof Jose Souza Herdy 1160, Duque De Caxias, RJ - Brazil

^[8] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro - Brazil

^[9] Int Iberian Nanotechnol Lab, Guimaraes - Portugal

^[10] Inst Sci & Innovat Mech & Ind Engn, LAETA INEGI, R Dr Roberto Frias, P-4200465 Porto - Portugal

^[11] Izmir Inst Technol, Dept Mat Sci & Engn, TR-35430 Izmir - Turkey

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 896, MAR 10 2022.
• Citações Web of Science: 0

Resumo

Poor tribocorrosion resistance of Ti and its alloys remains as a concern for load-bearing biomedical implants. Despite being an effective method to improve tribocorrosion resistance, titanium matrix composites (TMCs) have yet to be used in this type of applications. In-situ TiB (titanium boride) and TiC (titanium carbide) reinforcement phases have been considered as one of the best options to produce TMCs once these phases present high compatibility and strong interfacial bonding with Ti. Although the effect of these phases on the mechanical properties of Ti has been thoroughly researched in the last years, their effect on corrosion, tribocorrosion and biocompatibility of Ti is yet to be fully understood. In this work, in-situ Ti-TiB-TiCx composites obtained by reactive hot pressing showed identical corrosion response compared to the unreinforced Ti but displayed improved tribocorrosion behaviour. Under 0.5 N load, composites presented as average a reduction of 51% in wear volume loss and under 10 N the reduction was up to 93%. Early biological tests showed promising results, as composites were biocompatible and induced osteoblasts spreading and possibly proliferation most probably due to composite chemistry and surface hardness. (C) 2021 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 17/24319-7 - Desenvolvimento de novos filmes de óxido de titânio biofuncionalizados com gradiente estrutural e químico numa liga Ti-40Nb para aplicação em implantes osseointegráveis
• Beneficiário: Natália de Araújo da Costa
• Modalidade de apoio: Bolsas no Brasil - Mestrado