Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature

Chen-Kuei Chung; C. H. Tsai; C. R. Hsu; E. H. Kuo; Y. Chen; I. C. Chung

doi:10.1016/j.corsci.2017.05.027

Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature

Chen-Kuei Chung, C. H. Tsai, C. R. Hsu, E. H. Kuo, Y. Chen, I. C. Chung

Department of Mechanical Engineering

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

14 Citations (Scopus)

Abstract

Conventional anodic aluminium oxide (AAO) was formed using direct-current anodization from high-purity (99.99%–99.999%) Al foils at low 0–5 °C with a growth rate about 2–3 μm/h. Here, we investigate the greatly enhanced growth behaviour of AAO from AA5052 Al-Mg alloy (96.6%Al-2.6%Mg) at high 25 °C using hybrid-pulse anodization. The Mg-impurity and high-temperature enhanced growth rate of AAO at 25 °C is over three-fold to 9.7 μm/h; it also reduces the average pore size to 32.2 nm from 42.8 nm due to high-activity Mg hydrolysis releasing high Mg(OH)₂-formation heat and H₂ gas. The unique property of AAO from AA5052 is discussed.

Original language	English
Pages (from-to)	40-47
Number of pages	8
Journal	Corrosion Science
Volume	125
DOIs	https://doi.org/10.1016/j.corsci.2017.05.027
Publication status	Published - 2017 Aug 15

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

Access to Document

10.1016/j.corsci.2017.05.027

Fingerprint Dive into the research topics of 'Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature'. Together they form a unique fingerprint.

Cite this

@article{a840d1f7ac66459a8dad8540feb87332,

title = "Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature",

abstract = "Conventional anodic aluminium oxide (AAO) was formed using direct-current anodization from high-purity (99.99%–99.999%) Al foils at low 0–5 °C with a growth rate about 2–3 μm/h. Here, we investigate the greatly enhanced growth behaviour of AAO from AA5052 Al-Mg alloy (96.6%Al-2.6%Mg) at high 25 °C using hybrid-pulse anodization. The Mg-impurity and high-temperature enhanced growth rate of AAO at 25 °C is over three-fold to 9.7 μm/h; it also reduces the average pore size to 32.2 nm from 42.8 nm due to high-activity Mg hydrolysis releasing high Mg(OH)2-formation heat and H2 gas. The unique property of AAO from AA5052 is discussed.",

author = "Chen-Kuei Chung and Tsai, {C. H.} and Hsu, {C. R.} and Kuo, {E. H.} and Y. Chen and Chung, {I. C.}",

year = "2017",

month = aug,

day = "15",

doi = "10.1016/j.corsci.2017.05.027",

language = "English",

volume = "125",

pages = "40--47",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature

AU - Chung, Chen-Kuei

AU - Tsai, C. H.

AU - Hsu, C. R.

AU - Kuo, E. H.

AU - Chen, Y.

AU - Chung, I. C.

PY - 2017/8/15

Y1 - 2017/8/15

N2 - Conventional anodic aluminium oxide (AAO) was formed using direct-current anodization from high-purity (99.99%–99.999%) Al foils at low 0–5 °C with a growth rate about 2–3 μm/h. Here, we investigate the greatly enhanced growth behaviour of AAO from AA5052 Al-Mg alloy (96.6%Al-2.6%Mg) at high 25 °C using hybrid-pulse anodization. The Mg-impurity and high-temperature enhanced growth rate of AAO at 25 °C is over three-fold to 9.7 μm/h; it also reduces the average pore size to 32.2 nm from 42.8 nm due to high-activity Mg hydrolysis releasing high Mg(OH)2-formation heat and H2 gas. The unique property of AAO from AA5052 is discussed.

AB - Conventional anodic aluminium oxide (AAO) was formed using direct-current anodization from high-purity (99.99%–99.999%) Al foils at low 0–5 °C with a growth rate about 2–3 μm/h. Here, we investigate the greatly enhanced growth behaviour of AAO from AA5052 Al-Mg alloy (96.6%Al-2.6%Mg) at high 25 °C using hybrid-pulse anodization. The Mg-impurity and high-temperature enhanced growth rate of AAO at 25 °C is over three-fold to 9.7 μm/h; it also reduces the average pore size to 32.2 nm from 42.8 nm due to high-activity Mg hydrolysis releasing high Mg(OH)2-formation heat and H2 gas. The unique property of AAO from AA5052 is discussed.

UR - http://www.scopus.com/inward/record.url?scp=85020261442&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020261442&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2017.05.027

DO - 10.1016/j.corsci.2017.05.027

M3 - Article

AN - SCOPUS:85020261442

VL - 125

SP - 40

EP - 47

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -

Impurity and temperature enhanced growth behaviour of anodic aluminium oxide from AA5052 Al-Mg alloy using hybrid pulse anodization at room temperature

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Cite this