Multi-step passivation of titanium in dilute sulphuric acid

H. Nanjo; N. J. Laycock; K. Sajiki; N. Hoshi; F. M.B. Hassan; S. Venkatachalam; M. Kanakubo; T. Aizawa; J. Onagawa

doi:10.1149/2.065111jes

Multi-step passivation of titanium in dilute sulphuric acid

H. Nanjo, N. J. Laycock, K. Sajiki, N. Hoshi, F. M.B. Hassan, S. Venkatachalam, M. Kanakubo, T. Aizawa, J. Onagawa

Research output: Contribution to journal › Article › peer-review

Abstract

Anodic passivation of titanium in dilute sulphuric acid has been investigated using ellipsometry, AFM and STM. The passive film forms by nucleation and growth of surface oxide particles, which are shown to have a crystalline structure when examined ex-situ after completion of the passivation treatment. A new surface treatment technique has been developed, consisting of multiple sequential passivation and relaxation stages, with each passivation step designed to grow approximately one monolayer of oxide. Varying the duration of the relaxation steps is shown to have significant effects on the surface morphology of the passive film.

Original language	English
Pages (from-to)	C379-C384
Journal	Journal of the Electrochemical Society
Volume	158
Issue number	11
DOIs	https://doi.org/10.1149/2.065111jes
Publication status	Published - 2011
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Materials Chemistry
Surfaces, Coatings and Films
Electrochemistry
Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/2.065111jes

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title = "Multi-step passivation of titanium in dilute sulphuric acid",

abstract = "Anodic passivation of titanium in dilute sulphuric acid has been investigated using ellipsometry, AFM and STM. The passive film forms by nucleation and growth of surface oxide particles, which are shown to have a crystalline structure when examined ex-situ after completion of the passivation treatment. A new surface treatment technique has been developed, consisting of multiple sequential passivation and relaxation stages, with each passivation step designed to grow approximately one monolayer of oxide. Varying the duration of the relaxation steps is shown to have significant effects on the surface morphology of the passive film.",

author = "H. Nanjo and Laycock, {N. J.} and K. Sajiki and N. Hoshi and Hassan, {F. M.B.} and S. Venkatachalam and M. Kanakubo and T. Aizawa and J. Onagawa",

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doi = "10.1149/2.065111jes",

language = "English",

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T1 - Multi-step passivation of titanium in dilute sulphuric acid

AU - Nanjo, H.

AU - Laycock, N. J.

AU - Sajiki, K.

AU - Hoshi, N.

AU - Hassan, F. M.B.

AU - Venkatachalam, S.

AU - Kanakubo, M.

AU - Aizawa, T.

AU - Onagawa, J.

PY - 2011

Y1 - 2011

N2 - Anodic passivation of titanium in dilute sulphuric acid has been investigated using ellipsometry, AFM and STM. The passive film forms by nucleation and growth of surface oxide particles, which are shown to have a crystalline structure when examined ex-situ after completion of the passivation treatment. A new surface treatment technique has been developed, consisting of multiple sequential passivation and relaxation stages, with each passivation step designed to grow approximately one monolayer of oxide. Varying the duration of the relaxation steps is shown to have significant effects on the surface morphology of the passive film.

AB - Anodic passivation of titanium in dilute sulphuric acid has been investigated using ellipsometry, AFM and STM. The passive film forms by nucleation and growth of surface oxide particles, which are shown to have a crystalline structure when examined ex-situ after completion of the passivation treatment. A new surface treatment technique has been developed, consisting of multiple sequential passivation and relaxation stages, with each passivation step designed to grow approximately one monolayer of oxide. Varying the duration of the relaxation steps is shown to have significant effects on the surface morphology of the passive film.

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VL - 158

SP - C379-C384

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 11

ER -

Multi-step passivation of titanium in dilute sulphuric acid

Abstract

ASJC Scopus subject areas

UN SDGs

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