Effect of continuous rotation evolutional control on the surface color of anodized Al-Mg alloys

Satoshi Oue, Hiroaki Nakano, Daisuke Kurai, Hisaaki Fukushima, Katsuaki Nakamura, Masataka Masuda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Al-Mg alloys treated by continuous rotation evolutional control (CREO) were anodized and colored by means of AC electrolysis at 10 V in sulfate solutions of 303 K containing Cu, Sn, Ni or Co. The anodized Al-Mg alloys were colored rufous (Cu), yellow to gold (Sn), or red brown (Ni and Co) by the electrolysis. The lightness of the colored Al-Mg alloys was significantly enhanced by CREO, regardless of the metals deposited. The gloss of the Al-Mg alloys decreased-probably due to an increase in surface waviness resulting from CREO. The enhancement of the lightness of colored Al-Mg alloys treated by CREO is attributed to the decrease in the glossiness. SEM images showed that the density of the micro-pores in anodic oxide films on Al-Mg alloys decreased as a result of CREO. The decrease in the density of the micro-pores may be assumed to have enhanced the lightness of the colored Al-Mg alloys treated by CREO.

Original languageEnglish
Pages (from-to)739-744
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume72
Issue number9
DOIs
Publication statusPublished - Sep 1 2008

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Color
color
electrolysis
Electrolysis
porosity
Gold
Sulfates
Oxide films
oxide films
sulfates
alternating current
Metals
gold
Scanning electron microscopy
scanning electron microscopy
augmentation
metals

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effect of continuous rotation evolutional control on the surface color of anodized Al-Mg alloys. / Oue, Satoshi; Nakano, Hiroaki; Kurai, Daisuke; Fukushima, Hisaaki; Nakamura, Katsuaki; Masuda, Masataka.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 72, No. 9, 01.09.2008, p. 739-744.

Research output: Contribution to journalArticle

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AB - Al-Mg alloys treated by continuous rotation evolutional control (CREO) were anodized and colored by means of AC electrolysis at 10 V in sulfate solutions of 303 K containing Cu, Sn, Ni or Co. The anodized Al-Mg alloys were colored rufous (Cu), yellow to gold (Sn), or red brown (Ni and Co) by the electrolysis. The lightness of the colored Al-Mg alloys was significantly enhanced by CREO, regardless of the metals deposited. The gloss of the Al-Mg alloys decreased-probably due to an increase in surface waviness resulting from CREO. The enhancement of the lightness of colored Al-Mg alloys treated by CREO is attributed to the decrease in the glossiness. SEM images showed that the density of the micro-pores in anodic oxide films on Al-Mg alloys decreased as a result of CREO. The decrease in the density of the micro-pores may be assumed to have enhanced the lightness of the colored Al-Mg alloys treated by CREO.

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