Desgaste y corrosión de recubrimientos de PLGA sobre titanio en contacto con hueso y fluido sinovial
AUTOR(ES)
Amador, Anderson Sandoval
FONTE
Matéria (Rio J.)
DATA DE PUBLICAÇÃO
16/09/2019
RESUMO
ABSTRACT In this work, the synergism between wear and corrosion was evaluated in titanium specimens covered by PLGA. The tests were carried out in a tribocorrosion machine, taking into account two variables: scratch ve-locity and applied load. A bipotentiostat was adapted to obtain the potentiostatic curves and Tafel in resting, moving and wear-corrosion conditions. Surface topography was observed using a Carl-Zeiss Imager Z1 mi-croscope. This information, together with the results of the electrochemical tests, was used to establish the synergistic and degradation mechanisms of the material under the different test conditions. From the results obtained in this work, it was observed that the synergism is the most important factor of the degradation of the material with a percentage of 82% in such a way that the samples of titanium with PLGA coating showed wear favored by corrosion.
Documentos Relacionados
- Efectos de tratamientos térmicos post-alcalinos sobre las propiedades superficiales de titanio para implantes dentales con diferentes recubrimientos
- Predicción del rendimiento en cortes, hueso y grasa en búfalos de agua en Venezuela
- Protección de acero para instrumentos quirúrgicos con recubrimientos duros en base carbono tipo DLC
- Fatiga de contacto por rodadura en acero SAE 1050 recubierto con TiN, posteriormente templado
- Fotodegradación heterogénea de bisfenol A en agua con dióxido de titanio