Abstract
This study investigates the film formation of the ionic liquid-Mg alloy system using trihexyl(tetradecyl)phosphonium bis 2, 4, 4- trimethylpentylphopshinate (P 6,6,6,14( iC 8) 2PO 2) ionic liquid with AZ31 magnesium alloy during oxidation. Oxidation was performed at relatively low voltages (<V vs. OCP of AZ31) using both constant-voltage and constant-current techniques. Anodic films were produced in conditions of varying applied voltage, current density, time and temperature. Films formed at a constant voltage of 3 V were highly porous, and inhomogeneous unless treated at an elevated temperature of 50°C. These films provided no improvement in corrosion resistance over the control. Comparatively, anodising AZ31 to a final voltage of 18 V at 0.01 mA/cm 2 in ionic liquid resulted in a reduction in microgalvanic corrosion at cathodic sites. The preliminary results suggest that the ionic liquid solution may be a possible candidate as an anodising electrolyte.
| Original language | English |
|---|---|
| Title of host publication | 18th International Corrosion Congress 2011 |
| Subtitle of host publication | 20-24 November 2011; Perth, Australia |
| Place of Publication | Blackburn VIC Australia |
| Publisher | Australasian Corrosion Association |
| Pages | 274-284 |
| Number of pages | 11 |
| Volume | 1 |
| ISBN (Print) | 9781618393630 |
| Publication status | Published - 2011 |
| Event | International Corrosion Congress 2011 - Perth Convention and Exhibition Centre, Perth, Australia Duration: 20 Nov 2011 → 24 Nov 2011 Conference number: 18th |
Conference
| Conference | International Corrosion Congress 2011 |
|---|---|
| Abbreviated title | ICC 2011 |
| Country | Australia |
| City | Perth |
| Period | 20/11/11 → 24/11/11 |
| Other | The 18th International Corrosion Congress took place between the 20th and the 24th November 2011 in the Perth Convention and Exhibition Centre, Australia. The International Corrosion Congress is the major event of the International Corrosion Council (ICC), an international body founded to advance corrosion science and engineering and is held once every three years by different host countries. |
Keywords
- Anodising
- AZ31
- Corrosion protection
- Ionic liquid
- Magnesium
- Oxidation
Cite this
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Anodic oxidation of AZ31 Mg alloy in ionic liquid. / Latham, J.-A.; Howlett, P. C.; MacFarlane, D. R.; Forsyth, M.
18th International Corrosion Congress 2011: 20-24 November 2011; Perth, Australia. Vol. 1 Blackburn VIC Australia : Australasian Corrosion Association, 2011. p. 274-284.Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review
TY - GEN
T1 - Anodic oxidation of AZ31 Mg alloy in ionic liquid
AU - Latham, J.-A.
AU - Howlett, P. C.
AU - MacFarlane, D. R.
AU - Forsyth, M.
PY - 2011
Y1 - 2011
N2 - This study investigates the film formation of the ionic liquid-Mg alloy system using trihexyl(tetradecyl)phosphonium bis 2, 4, 4- trimethylpentylphopshinate (P 6,6,6,14( iC 8) 2PO 2) ionic liquid with AZ31 magnesium alloy during oxidation. Oxidation was performed at relatively low voltages (<V vs. OCP of AZ31) using both constant-voltage and constant-current techniques. Anodic films were produced in conditions of varying applied voltage, current density, time and temperature. Films formed at a constant voltage of 3 V were highly porous, and inhomogeneous unless treated at an elevated temperature of 50°C. These films provided no improvement in corrosion resistance over the control. Comparatively, anodising AZ31 to a final voltage of 18 V at 0.01 mA/cm 2 in ionic liquid resulted in a reduction in microgalvanic corrosion at cathodic sites. The preliminary results suggest that the ionic liquid solution may be a possible candidate as an anodising electrolyte.
AB - This study investigates the film formation of the ionic liquid-Mg alloy system using trihexyl(tetradecyl)phosphonium bis 2, 4, 4- trimethylpentylphopshinate (P 6,6,6,14( iC 8) 2PO 2) ionic liquid with AZ31 magnesium alloy during oxidation. Oxidation was performed at relatively low voltages (<V vs. OCP of AZ31) using both constant-voltage and constant-current techniques. Anodic films were produced in conditions of varying applied voltage, current density, time and temperature. Films formed at a constant voltage of 3 V were highly porous, and inhomogeneous unless treated at an elevated temperature of 50°C. These films provided no improvement in corrosion resistance over the control. Comparatively, anodising AZ31 to a final voltage of 18 V at 0.01 mA/cm 2 in ionic liquid resulted in a reduction in microgalvanic corrosion at cathodic sites. The preliminary results suggest that the ionic liquid solution may be a possible candidate as an anodising electrolyte.
KW - Anodising
KW - AZ31
KW - Corrosion protection
KW - Ionic liquid
KW - Magnesium
KW - Oxidation
UR - http://www.scopus.com/inward/record.url?scp=84867252669&partnerID=8YFLogxK
M3 - Conference Paper
SN - 9781618393630
VL - 1
SP - 274
EP - 284
BT - 18th International Corrosion Congress 2011
PB - Australasian Corrosion Association
CY - Blackburn VIC Australia
ER -