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

Fernando Carlos Giacomelli¹  Cristiano Giacomelli¹  Almir Spinelli¹ 

[1] ,Universidade Federal de Santa Catarina Departamento de Química Florianópolis SC ,Brazil

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

DOI  :  10.1590/S0103-50532004000400016

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 CrO4(2-) 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】

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