Electrochemical behavior of anodized AA6063-T6 alloys affected by matrix structures

Yung Sen Huang; Teng Shih Shih; Chen En Wu

doi:10.1016/j.apsusc.2012.10.036

Electrochemical behavior of anodized AA6063-T6 alloys affected by matrix structures

Yung Sen Huang, Teng Shih Shih, Chen En Wu

Department of Mechanical Engineering

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

17 Scopus citations

Abstract

AA 6063 alloys were cold-rolled (CR) either before or after solution treatment (S) and then different samples were artificially aged (T6) to obtain different samples (CRST6 and SCRT6). The highest dislocation density was observed in the SCRT6 sample which also showed the lowest particle count among the three samples; ST6, CRST6 and SCRT6. Subsequently, all samples were anodized in a 15 wt% sulfuric acid solution for different time spans to obtain anodic aluminum oxide (AAO) films. The anodized samples were further analyzed with X-ray Photoelectron Spectroscopy (XPS) analysis. We determined that the constituent phases in the AAO film were composed of hydrated amorphous alumina, hydrated oxide (Al(OH) ₃ ) and oxyhydroxide (AlOOH) phases together with some silicon-containing particles trapped in the films on all samples. In the electrochemical test, the silicon-containing particles and hydrated Al(OH) ₃ oxide that existed at the electrolyte/film (e/f) interface were found to inversely influence the corrosion resistance of the anodized samples.

Original language	English
Pages (from-to)	410-418
Number of pages	9
Journal	Applied Surface Science
Volume	264
DOIs	https://doi.org/10.1016/j.apsusc.2012.10.036
State	Published - 1 Jan 2013

Keywords

AlOOH
Anodic aluminum oxide film
Cold rolled
EIS
XPS

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10.1016/j.apsusc.2012.10.036

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title = "Electrochemical behavior of anodized AA6063-T6 alloys affected by matrix structures",

abstract = " AA 6063 alloys were cold-rolled (CR) either before or after solution treatment (S) and then different samples were artificially aged (T6) to obtain different samples (CRST6 and SCRT6). The highest dislocation density was observed in the SCRT6 sample which also showed the lowest particle count among the three samples; ST6, CRST6 and SCRT6. Subsequently, all samples were anodized in a 15 wt% sulfuric acid solution for different time spans to obtain anodic aluminum oxide (AAO) films. The anodized samples were further analyzed with X-ray Photoelectron Spectroscopy (XPS) analysis. We determined that the constituent phases in the AAO film were composed of hydrated amorphous alumina, hydrated oxide (Al(OH) 3 ) and oxyhydroxide (AlOOH) phases together with some silicon-containing particles trapped in the films on all samples. In the electrochemical test, the silicon-containing particles and hydrated Al(OH) 3 oxide that existed at the electrolyte/film (e/f) interface were found to inversely influence the corrosion resistance of the anodized samples.",

keywords = "AlOOH, Anodic aluminum oxide film, Cold rolled, EIS, XPS",

author = "Huang, {Yung Sen} and Shih, {Teng Shih} and Wu, {Chen En}",

note = "Funding Information: The authors gratefully acknowledge the financial support of this study by the National Science Council of the Republic of China ( 99-2221-E-008-023 ). We also extend our thanks to National Central University for providing the TEM (JEOL-2000 FX II) and XPS (VG-Scientific Sigma Probe-PHI-1600) analysis, and National Taiwan University for the FESEM/EBSD (LEO 1530) analysis.",

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AU - Huang, Yung Sen

AU - Shih, Teng Shih

AU - Wu, Chen En

N1 - Funding Information: The authors gratefully acknowledge the financial support of this study by the National Science Council of the Republic of China ( 99-2221-E-008-023 ). We also extend our thanks to National Central University for providing the TEM (JEOL-2000 FX II) and XPS (VG-Scientific Sigma Probe-PHI-1600) analysis, and National Taiwan University for the FESEM/EBSD (LEO 1530) analysis.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - AA 6063 alloys were cold-rolled (CR) either before or after solution treatment (S) and then different samples were artificially aged (T6) to obtain different samples (CRST6 and SCRT6). The highest dislocation density was observed in the SCRT6 sample which also showed the lowest particle count among the three samples; ST6, CRST6 and SCRT6. Subsequently, all samples were anodized in a 15 wt% sulfuric acid solution for different time spans to obtain anodic aluminum oxide (AAO) films. The anodized samples were further analyzed with X-ray Photoelectron Spectroscopy (XPS) analysis. We determined that the constituent phases in the AAO film were composed of hydrated amorphous alumina, hydrated oxide (Al(OH) 3 ) and oxyhydroxide (AlOOH) phases together with some silicon-containing particles trapped in the films on all samples. In the electrochemical test, the silicon-containing particles and hydrated Al(OH) 3 oxide that existed at the electrolyte/film (e/f) interface were found to inversely influence the corrosion resistance of the anodized samples.

AB - AA 6063 alloys were cold-rolled (CR) either before or after solution treatment (S) and then different samples were artificially aged (T6) to obtain different samples (CRST6 and SCRT6). The highest dislocation density was observed in the SCRT6 sample which also showed the lowest particle count among the three samples; ST6, CRST6 and SCRT6. Subsequently, all samples were anodized in a 15 wt% sulfuric acid solution for different time spans to obtain anodic aluminum oxide (AAO) films. The anodized samples were further analyzed with X-ray Photoelectron Spectroscopy (XPS) analysis. We determined that the constituent phases in the AAO film were composed of hydrated amorphous alumina, hydrated oxide (Al(OH) 3 ) and oxyhydroxide (AlOOH) phases together with some silicon-containing particles trapped in the films on all samples. In the electrochemical test, the silicon-containing particles and hydrated Al(OH) 3 oxide that existed at the electrolyte/film (e/f) interface were found to inversely influence the corrosion resistance of the anodized samples.

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Electrochemical behavior of anodized AA6063-T6 alloys affected by matrix structures

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Keywords

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