Nano Research & Applications

The transpassivation of pure Ti in artificial seawater

World Congress on Materials Science & Engineering
August 23-25, 2018 Amsterdam, Netherlands

Guang-Ling Song, Shaokun Yan, Dajiang Zheng, Matthew S Dargusch and Lian Zhou

Xiamen University, China The University of Queensland, Australia Nanjing Tech University, China

Posters & Accepted Abstracts: Nano Res Appl

DOI: 10.21767/2471-9838-C4-018

Abstract

Ti and its alloys have been widely used in aerospace, and biomedicine, petrochemical industries because of their excellent passivity. In this paper, the passivation and transpassivation behavior of pure Ti in artificial seawater was investigated by means of volta potential, cyclic voltammetry, spectroscopic ellipsometery, Mott-Schottky analyses, SEM and XPS. The results indicated that the passive Ti surface can transform to a relatively active state around at roughly 1.4 VSCE and then became passive again at more positive potentials up to 3.2 VSCE. Based on these experimental results, a model was proposed to interpret the transpassivaton behavior around that potential.

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