Evaluation of corrosion resistance of nanotubes formed on Ti-30Ta alloy surface

• Grant number: 11/21837-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2012
• End date: January 31, 2013
• Field of knowledge: Interdisciplinary Subjects
• Principal Investigator: Ana Paula Rosifini Alves
• Grantee: Daniela Vieira
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil

Abstract

In the last years, several modification surface techniques have been used in titanium alloys for biomedical applications. Corrosion resistance is one the most relevant properties, because it is related with ions release of metallic iomaterials. The purpose of this study will be to evaluate corrosion resistance of Ti-30Ta alloy after nanotubes growth in its surface. Ti-30Ta alloy will be obtained from pure elements in arc melting furnace and cold worked by swagging. Anodic oxidation will be realized according our previous studies. For corrosion resistance will be evaluated using cylinders with 15 mm in diameter and 1 cm2 of area. Electrochemical studies will be realized according our studies for Ti-Mo system. The potentiodynamic and chronoamperometric curves will be obtained by means of an EG&G PAR 283 potentiostat/galvanostat. Surfaces will be evaluated before and after electrochemical tests in scanning electron and optical microscope.(AU)