| Texto completo | |
| Autor(es): |
Ferreira, M. O. A.
;
Santos, K. R.
;
Mariani, F. E.
;
Gelamo, R. V.
;
Slade, N. B. Leite
;
Morais, M. M.
;
Fortulan, C. A.
;
Pinto, H. C.
;
Moreto, J. A.
Número total de Autores: 9
|
| Tipo de documento: | Artigo Científico |
| Fonte: | EMERGENT MATERIALS; v. N/A, p. 18-pg., 2025-02-13. |
| Resumo | |
Surface functionalisation using nanostructured coatings represents a promising strategy for enhancing the corrosion and wear resistance of commonly used biomedical metallic implants, such as 316 L stainless steel. In this study, we investigated the effects of niobium pentoxide (Nb2O5) and amorphous carbon (a-C) coatings, which were applied to the surfaces of 316 L stainless steel via the reactive sputtering technique. A series of pin-on-disk analyses and electrochemical tests were performed under various environmental conditions. The results clearly indicated that both coatings significantly reduced the coefficient of friction compared to the uncoated alloy when tested in air, 0.6 mol L--(1) NaCl solution, and artificial saliva. Under all tested conditions, the sample coated with a thin film of Nb2O5 demonstrated the lowest values for wear volume and wear rate. Electrochemical assays provided compelling evidence of the effectiveness of reactive sputtering in creating coatings that markedly enhance the resistance of 316 L stainless steel to uniform and localised corrosion processes when exposed to 0.6 mol L--(1) NaCl and artificial saliva solutions. (AU) | |
| Processo FAPESP: | 20/16012-1 - Fabricação de core plugs cerâmicos com porosidade multiescala |
| Beneficiário: | Mateus Mota Morais |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |