A PRELIMINARY INVESTIGATION INTO THE MICROSCOPIC DEPASSIVATION OF PASSIVE TITANIUM IMPLANT MATERIALS IN-VITRO

Authors
SOUTO RM BURSTEIN GT
Citation
Rm. Souto et Gt. Burstein, A PRELIMINARY INVESTIGATION INTO THE MICROSCOPIC DEPASSIVATION OF PASSIVE TITANIUM IMPLANT MATERIALS IN-VITRO, Journal of materials science. Materials in medicine, 7(6), 1996, pp. 337-343
Citations number
42
Categorie Soggetti
Polymer Sciences","Medicine Miscellaneus","Materials Science, Biomaterials
Journal title
Journal of materials science. Materials in medicine → ACNP
ISSN journal
09574530
Volume
7
Issue
6
Year of publication
1996
Pages
337 - 343
Database
ISI
SICI code
0957-4530(1996)7:6<337:APIITM>2.0.ZU;2-I
Abstract
A Sensitive electrochemical technique has been used to examine the pas sive state of titanium-based materials in Ringer's physiological solut ion. At ambient temperature, the alloy Ti-6Al-4V shows transient micro scopic breakdown of the passive state induced by the presence of chlor ide ions, and enhanced by increased acidity. These breakdown events in volve highly localized depassivation of the passive surface followed b y repassivation. Under similar experimental conditions no breakdown of passive titanium was detected.