Corrosion resistance of titanium CP in saline physiological solutions with calcium phosphate and proteins

• Tipo: Artigo em Revista Científica Internacional
• Data: 1993

Autores

Sousa, SR (Autor) Outra; Mário Adolfo Barbosa (Autor) FEUP

Revista

Título: Clinical Materials

Vol. 14

Páginas: 287-294

ISSN: 0267-6605

Editora: Pergamon Press - Elsevier

Indexação

Scopus - 36 Citações

Outras Informações

ID Authenticus: P-007-61T

DOI: 10.1016/0267-6605(93)90015-y

Abstract (EN): The effect of proteins and calcium phosphate on the corrosion resistance of comercially pure (CP) titanium was studied by DC electrochemical techniques (potentiodynamic and galvanostatic polarization) and by AC electrochemical impedance. Passivation and anodic oxidation were the surface treatments used. The anodic oxidation treatment provided a higher corrosion resistance in the different solutions. Proteins have a beneficial effect on the corrosion resistance of titanium in the absence of film breakdown. However, when attack takes place these species have an adverse effect. With calcium and phosphate ions a decrease in the corrosion resistance of titanium is observed, with and without film breakdown. The results are compared with those obtained for stainless steel in a previous work, in which proteins and calcium phosphate improved the corrosion resistance under identical conditions.The effect of proteins and calcium phosphate on the corrosion resistance of commercially pure (CP) titanium was studied by DC electrochemical techniques (potentiodynamic and galvanostatic polarization) and by AC electrochemical impedance. Passivation and anodic oxidation were the surface treatments used. The anodic oxidation treatment provided a higher corrosion resistance in the different solutions. Proteins have a beneficial effect on the corrosion resistance of titanium in the absence of film breakdown. However, when attack takes place these species have an adverse effect. The results are compared with those obtained for stainless steel in a previous work, in which proteins and calcium phosphate improved the corrosion resistance under identical conditions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica