scholarly journals Effect of high-frequency switching electrolysis on film thickness uniformity of anodic oxide film formed on AC8A Aluminum alloy

2010 ◽  
Vol 60 (11) ◽  
pp. 602-607 ◽  
Author(s):  
Tomoharu Yamamoto ◽  
Hiroomi Tanaka ◽  
Masahiro Fujita ◽  
Hidetaka Asoh ◽  
Sachiko Ono
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Film Thickness ◽  
High Frequency ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Thickness Uniformity

scholarly journals The Electrical and Mechanical Properties of Porous Anodic 6061-T6 Aluminum Alloy Oxide Film

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Tsung-Chieh Cheng ◽  
Chu-Chiang Chou
Keyword(s):  
Aluminum Alloy ◽  
Sulfuric Acid ◽  
Electrical Properties ◽  
Oxide Film ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Anodic Current Density ◽  
Mechanical And Electrical Properties ◽  
Aluminum Ions ◽  
Anodic Voltage

The properties of the growth of the 6061-T6 aluminum alloy oxide were studied using sulfuric acid anodization. The parameters for the manufacturing process include electrolyte categories, electrolyte concentration, and operating voltages. The results showed that the aluminum oxides obtained by anodization process are mainly amorphous structure and the anodic current density is an important factor affecting the rate of response for oxygen and aluminum ions in barrier. In this experiment, polish process is very important to stable the anodic aluminum oxide film and then it will get the better properties of anodic film. Besides, when using sulfuric acid as the electrolyte, the increase of anodic voltage also increases the rate of reaction which increases the mechanical and electrical properties of anodic oxide film, but too large applied anodic voltage will reduce the mechanical and electrical properties of film because of the crack of the anodic oxide film.

Black Anodized Thermal Control Coating on LY12 Aluminum Alloy

2011 ◽  
Vol 233-235 ◽  
pp. 2166-2171 ◽  
Author(s):  
Mei Yu ◽  
Wu Jiang ◽  
Jian Hua Liu ◽  
Song Mei Li
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Thermal Control ◽  
Anodic Oxide ◽  
Open Circuit ◽  
Anodic Oxide Film ◽  
Solar Absorptance ◽  
Porous Oxide ◽  
Thermal Control Coatings ◽  
Galvanostatic Conditions

The black thermal control coatings were prepared by etching anodic oxide film and coloring with an organic ATT dyestuff on the LY12 aluminum alloy. The anodic oxide film on aluminum alloy was formulated in 20% aqueous solution of sulfuric acid in galvanostatic conditions. The microstructure of the anodized coating was studied by scanning electronic microscope (SEM). Open circuit potential (OCP) was applied to study the etching of porous oxide layers in the immerging acid solution. The influence of coloring on the optical properties of the coating was investigated. Results showed that the solar absorptance and infrared emittance increased by increasing coloring times.

Laser Cleaning Process of 2219 Aluminum Alloy Anodic Oxide Film Before Welding

2019 ◽  
Vol 46 (1) ◽  
pp. 0102005
Author(s):  
夏佩云 Xia Peiyun ◽  
尹玉环 Yin Yuhuan ◽  
蔡爱军 Cai Aijun ◽  
黄征 Huang Zheng ◽  
李丹 Li Dan ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Oxide Film ◽  
Anodic Oxide ◽  
Laser Cleaning ◽  
Anodic Oxide Film ◽  
Cleaning Process ◽  
2219 Aluminum Alloy

Effects of Anodizing Time on Anodizing of Mg-Al Alloy in Alkaline Solution

2006 ◽  
Vol 510-511 ◽  
pp. 686-689
Author(s):  
Seong Jong Kim ◽  
Jeong Il Kim
Keyword(s):  
Oxide Film ◽  
Film Thickness ◽  
Alkaline Solution ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Al Alloy ◽  
Active Dissolution ◽  
Dissolution Reaction ◽  
Edx Analyses ◽  
Time Required

This paper investigated the effects of anodizing time on the formation of anodic oxide films on a Mg-Al alloy in alkaline solution. The thickness of the anodic oxide film was increased by increasing the time required to generate the active dissolution reaction. When anodizing at various anodizing time, the potential after passivity increased with time, which implies growth in film thickness. When the anodizing time was varied, the quantity of oxygen increased with time in the white areas (the film), i.e., more film was observed in the SEM and EDX analyses.

scholarly journals The effect of anodic oxide film on photo catalysis of TiO2 thin film formed on aluminum alloy sheets

2004 ◽  
Vol 54 (8) ◽  
pp. 313-317 ◽  
Author(s):  
Tokimasa KAWABATA ◽  
Hiroaki HAYASHI ◽  
Kenji MATSUDA ◽  
Seiichi RENGAKUJI ◽  
Akihiro SHINAGAWA ◽  
...  
Keyword(s):  
Thin Film ◽  
Aluminum Alloy ◽  
Oxide Film ◽  
Tio2 Thin Film ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Photo Catalysis

Deposited emulsion particles in the pores of aluminum oxide film

1978 ◽  
Vol 36 (1) ◽  
pp. 450-451
Author(s):  
Michio Ashida ◽  
Yasukiyo Ueda
Keyword(s):  
Oxide Film ◽  
Acid Solution ◽  
Barrier Layer ◽  
Colloidal Particles ◽  
Oxalic Acid Solution ◽  
Anodic Oxide ◽  
Anodic Oxide Film ◽  
Carbon Replica ◽  
Sectioning Method ◽  
Thin Sectioning

An anodic oxide film is formed on aluminum in an acidic elecrolyte during anodizing. The structure of the oxide film was observed directly by carbon replica method(l) and ultra-thin sectioning method(2). The oxide film consists of barrier layer and porous layer constructed with fine hexagonal cellular structure. The diameter of micro pores and the thickness of barrier layer depend on the applying voltage and electrolyte. Because the dimension of the pore corresponds to that of colloidal particles, many metals deposit in the pores. When the oxide film is treated as anode in emulsion of polyelectrolyte, the emulsion particles migrate onto the film and deposit on it. We investigated the behavior of the emulsion particles during electrodeposition.Aluminum foils (99.3%) were anodized in either 0.25M oxalic acid solution at 30°C or 3M sulfuric acid solution at 20°C. After washing with distilled water, the oxide films used as anode were coated with emulsion particles by applying voltage of 200V and then they were cured at 190°C for 30 minutes.

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