Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance

Visweswara Chakravarthy Gudla; Flemming Jensen; Stela Canulescu; Aude Simar; Rajan Ambat

Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance

Visweswara Chakravarthy Gudla, Flemming Jensen, Stela Canulescu, Aude Simar, Rajan Ambat

Université catholique de Louvain

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Multiple-pass friction stir processing (FSP) was employed to impregnate metal oxide (TiO₂, Y₂O₃ and CeO₂) particles into the surface of an Aluminium alloy. The surface composites were then anodized in a sulphuric acid electrolyte. The effect of anodizing parameters on the resulting optical appearance was studied. Microstructural and morphological characterization was performed using transmission electron microscopy (TEM). The surface appearance was analysed using an integrating sphere-spectrometer setup. Increasing the anodizing voltage changed the surface appearance of the composites from dark to greyish white. This is attributed to the localized microstructural and morphological differences around the metal oxide particles incorporated into the anodic alumina matrix. The metal oxide particles in the FSP zone electrochemically shadowed the underlying Al matrix and modified the local morphology of the anodic layer as well as changed the light interaction phenomenon.

Original language	English
Title of host publication	Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies
Editors	T.S. Sudarshan, P. Vuoristo, H. Koivuluoto
Publisher	VALARDOCS
Publication date	2014
Pages	375-384
ISBN (Print)	978-81-926196-1-3
Publication status	Published - 2014
Event	28th International Conference on Surface Modification Technologies - Tampere University of Technology, Tampere, Finland Duration: 16 Jun 2014 → 18 Jun 2014 Conference number: 28 http://www.tut.fi/en/international-conference-on-surface-modification-technologies/index.htm

Conference

Conference	28th International Conference on Surface Modification Technologies
Number	28
Location	Tampere University of Technology
Country/Territory	Finland
City	Tampere
Period	16/06/2014 → 18/06/2014
Internet address	http://www.tut.fi/en/international-conference-on-surface-modification-technologies/index.htm

Keywords

Aluminium
Friction Stir Processing
Spectrophotometry
Optical appearance
TiO2
Y2O3
CeO2
Reflectance
Electrochemical Finishing
Transmission Electron Microscopy
Composites
Decorative Anodizing
Sulphuric Acid
Focused Ion Beam

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Gudla, V. C., Jensen, F., Canulescu, S., Simar, A., & Ambat, R. (2014). Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance. In T. S. Sudarshan, P. Vuoristo, & H. Koivuluoto (Eds.), Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies (pp. 375-384). VALARDOCS.

Gudla, Visweswara Chakravarthy ; Jensen, Flemming ; Canulescu, Stela et al. / Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance. Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies. editor / T.S. Sudarshan ; P. Vuoristo ; H. Koivuluoto. VALARDOCS, 2014. pp. 375-384

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abstract = "Multiple-pass friction stir processing (FSP) was employed to impregnate metal oxide (TiO2, Y2O3 and CeO2) particles into the surface of an Aluminium alloy. The surface composites were then anodized in a sulphuric acid electrolyte. The effect of anodizing parameters on the resulting optical appearance was studied. Microstructural and morphological characterization was performed using transmission electron microscopy (TEM). The surface appearance was analysed using an integrating sphere-spectrometer setup. Increasing the anodizing voltage changed the surface appearance of the composites from dark to greyish white. This is attributed to the localized microstructural and morphological differences around the metal oxide particles incorporated into the anodic alumina matrix. The metal oxide particles in the FSP zone electrochemically shadowed the underlying Al matrix and modified the local morphology of the anodic layer as well as changed the light interaction phenomenon.",

keywords = "Aluminium, Friction Stir Processing, Spectrophotometry, Optical appearance, TiO2, Y2O3, CeO2, Reflectance, Electrochemical Finishing, Transmission Electron Microscopy, Composites, Decorative Anodizing, Sulphuric Acid, Focused Ion Beam",

author = "Gudla, {Visweswara Chakravarthy} and Flemming Jensen and Stela Canulescu and Aude Simar and Rajan Ambat",

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note = "28th International Conference on Surface Modification Technologies, SMT28 ; Conference date: 16-06-2014 Through 18-06-2014",

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Gudla, VC, Jensen, F, Canulescu, S, Simar, A & Ambat, R 2014, Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance. in TS Sudarshan, P Vuoristo & H Koivuluoto (eds), Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies. VALARDOCS, pp. 375-384, 28th International Conference on Surface Modification Technologies, Tampere, Finland, 16/06/2014.

Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance. / Gudla, Visweswara Chakravarthy; Jensen, Flemming; Canulescu, Stela et al.
Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies. ed. / T.S. Sudarshan; P. Vuoristo; H. Koivuluoto. VALARDOCS, 2014. p. 375-384.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance

AU - Gudla, Visweswara Chakravarthy

AU - Jensen, Flemming

AU - Canulescu, Stela

AU - Simar, Aude

AU - Ambat, Rajan

N1 - Conference code: 28

PY - 2014

Y1 - 2014

N2 - Multiple-pass friction stir processing (FSP) was employed to impregnate metal oxide (TiO2, Y2O3 and CeO2) particles into the surface of an Aluminium alloy. The surface composites were then anodized in a sulphuric acid electrolyte. The effect of anodizing parameters on the resulting optical appearance was studied. Microstructural and morphological characterization was performed using transmission electron microscopy (TEM). The surface appearance was analysed using an integrating sphere-spectrometer setup. Increasing the anodizing voltage changed the surface appearance of the composites from dark to greyish white. This is attributed to the localized microstructural and morphological differences around the metal oxide particles incorporated into the anodic alumina matrix. The metal oxide particles in the FSP zone electrochemically shadowed the underlying Al matrix and modified the local morphology of the anodic layer as well as changed the light interaction phenomenon.

AB - Multiple-pass friction stir processing (FSP) was employed to impregnate metal oxide (TiO2, Y2O3 and CeO2) particles into the surface of an Aluminium alloy. The surface composites were then anodized in a sulphuric acid electrolyte. The effect of anodizing parameters on the resulting optical appearance was studied. Microstructural and morphological characterization was performed using transmission electron microscopy (TEM). The surface appearance was analysed using an integrating sphere-spectrometer setup. Increasing the anodizing voltage changed the surface appearance of the composites from dark to greyish white. This is attributed to the localized microstructural and morphological differences around the metal oxide particles incorporated into the anodic alumina matrix. The metal oxide particles in the FSP zone electrochemically shadowed the underlying Al matrix and modified the local morphology of the anodic layer as well as changed the light interaction phenomenon.

KW - Aluminium

KW - Friction Stir Processing

KW - Spectrophotometry

KW - Optical appearance

KW - TiO2

KW - Y2O3

KW - CeO2

KW - Reflectance

KW - Electrochemical Finishing

KW - Transmission Electron Microscopy

KW - Composites

KW - Decorative Anodizing

KW - Sulphuric Acid

KW - Focused Ion Beam

M3 - Article in proceedings

SN - 978-81-926196-1-3

SP - 375

EP - 384

BT - Surface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies

A2 - Sudarshan, T.S.

A2 - Vuoristo, P.

A2 - Koivuluoto, H.

PB - VALARDOCS

T2 - 28th International Conference on Surface Modification Technologies

Y2 - 16 June 2014 through 18 June 2014

ER -

Friction stir processed Al - Metal oxide surface composites: Anodization and optical appearance

Abstract

Conference

Keywords

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