Behavior of a Co-Cr-Mo biomaterial in simulated body fluid solutions studied by electrochemical and surface analysis techniques

Journal of the Brazilian Chemical Society

Giacomelli, Cristiano¹  Spinelli, Almir¹  Giacomelli, Fernando Carlos¹  Universidade Federal de Santa Catarina, Florianópolis, Brazil¹ 

关键词: biomaterial;    Co-Cr-Mo alloy;    electrochemical behavior;    surface analysis;   

DOI  :  10.1590/S0103-50532004000400016

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

The behavior of a Co-Cr-Mo biomaterial used as dental prosthesis was studied by electrochemical (Open Circuit Potential (OCP) and potentiodynamic polarization) and surface analysis techniques (Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS)) in artificial saliva, artificial saliva with modified temperature (7 °C - 47 °C) and pH (1.4 - 13.4), and containing fluoride (1500 ppm). The results revealed that the surface morphology after potentiodynamic polarization is highly heterogeneous exhibiting three regions of different composition. Soluble metal species such as CrO42- were released to the solution during the potentiodynamic polarization. The electrochemical processes were markedly influenced by solution temperature and pH, whereas the presence of fluoride did not produce changes in the system.

【 授权许可】

Unknown