Effects of Current Density on the Formation of Anodic Oxide Films on AZ91

2006 ◽  
pp. 166-169
Author(s):  
Seong Jong Kim ◽  
Jeong Il Kim
Keyword(s):  
Current Density ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Oxide Films

Effects of Current Density on the Formation of Anodic Oxide Films on AZ91

2006 ◽  
Vol 510-511 ◽  
pp. 166-169
Author(s):  
Seong Jong Kim ◽  
Jeong Il Kim
Keyword(s):  
Corrosion Resistance ◽  
Current Density ◽  
Anodic Polarization ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Polarization Curve ◽  
Al Alloy ◽  
Anodic Oxide Films ◽  
Active Metal ◽  
Naoh Solution

Magnesium must be surface treated to prevent corrosion, since it is a very active metal electrochemically. On anodizing, a compact film several tens of micrometers thick forms on magnesium, which imparts good corrosion resistance. The Mg-Al alloy (AZ91) was anodized in 1 M NaOH solution. The surface morphology of the anodized films was observed using scanning electron microscopy (SEM), energy-dispersive x-ray (EDX), and electrochemical methods. The effects of current density on the formation of anodic oxide films for a Mg-Al alloy in 1 M NaOH were investigated. In the anodic polarization curve, the reference corrosion potentials were far greater at 4-9 mA/cm2 than at 1 mA/cm2. The film that formed at 1 mA/cm2 was thin, suggesting that parts of the film had been dissolved or destroyed during the anodic polarization test. Corrosion resistance differed owing to concentric differences in current flow. Thick anodic oxide films were formed at higher applied currents.

Influence of Current Density on the Composition of GaAs Anodic Oxide Films

1979 ◽  
Vol 126 (9) ◽  
pp. 1543-1547 ◽  
Author(s):  
M. Croset ◽  
J. Diaz ◽  
D. Dieumegard ◽  
L. M. Mercandalli
Keyword(s):  
Current Density ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Oxide Films

scholarly journals Influence of Current Density on the Structure and Dielectric Properties of Anodic Oxide Films on Niobium

2004 ◽  
Vol 55 (12) ◽  
pp. 943-951 ◽  
Author(s):  
Kazuhiro NAGAHARA ◽  
Masatoshi SAKAIRI ◽  
Hideaki TAKAHASHI ◽  
Shinji NAGATA ◽  
Kazuyoshi MATSUMOTO ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Current Density ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Oxide Films

Influence of current density on transport numbers in anodic oxide films on an anodized Al–5.7at.%W alloy

2003 ◽  
Vol 45 (12) ◽  
pp. 2905-2913 ◽  
Author(s):  
L Iglesias-Rubianes ◽  
P Skeldon ◽  
G.E Thompson ◽  
H Habazaki ◽  
K Shimizu
Keyword(s):  
Current Density ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Transport Numbers ◽  
Anodic Oxide Films

Crystallization in anodic oxide films

1988 ◽  
Vol 28 (1) ◽  
pp. 43-56 ◽  
Author(s):  
J.S.L. Leach ◽  
B.R. Pearson
Keyword(s):  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Oxide Films

Study of anodic oxide films formed on solid-state sintered SiC-ceramic at high anodic potentials

2021 ◽  
Author(s):  
M. Schneider ◽  
L. Šimůnková ◽  
A. Michaelis ◽  
M. Noeske ◽  
J. Aniol ◽  
...  
Keyword(s):  
Solid State ◽  
Oxide Films ◽  
Anodic Oxide ◽  
Anodic Oxide Films ◽  
Sic Ceramic
Sign in / Sign up

Export Citation Format

Share Document