Abstract
The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of Al and Al-Mg alloy was investigated by means of polarization curves in solutions containing 300 ppm of Cl-1 and by surface analysis. The potentials for pitting corrosion of Al and Al-Mg alloy were evidently shifted to the noble direction by using the ECAP process, indicating that this process improves resistance to pitting corrosion. This increase in resistance seems to be attributable to the increase in formation rate of Al oxide films due to the increase in grain boundary with ECAP. The pitting corrosion resistance of Al and Al-Mg alloy anodized galvanostatically in H2SO4 solution after ECAP was also investigated using electrochemical techniques. The pitting corrosion resistance of Al and Al-Mg alloy was remarkably improved by anodizing. However, the pitting corrosion resistance of anodized Al-Mg alloy was better without ECAP than with ECAP.
| Original language | English |
|---|---|
| Title of host publication | Nanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation |
| Pages | 487-492 |
| Number of pages | 6 |
| Publication status | Published - Dec 1 2006 |
| Event | 3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, Japan Duration: Sep 22 2005 → Sep 26 2005 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 503-504 |
| ISSN (Print) | 0255-5476 |
Other
| Other | 3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 |
|---|---|
| Country | Japan |
| City | Fukuoka |
| Period | 9/22/05 → 9/26/05 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Effect of equal-channel angular pressing on the pitting corrosion resistance of Al alloy. / Son, In Joon; Nakano, Hiroaki; Oue, Satoshi; Kobayashi, Shigeo; Fukushima, Hisaaki; Horita, Zenji.
Nanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation. 2006. p. 487-492 (Materials Science Forum; Vol. 503-504).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Effect of equal-channel angular pressing on the pitting corrosion resistance of Al alloy
AU - Son, In Joon
AU - Nakano, Hiroaki
AU - Oue, Satoshi
AU - Kobayashi, Shigeo
AU - Fukushima, Hisaaki
AU - Horita, Zenji
PY - 2006/12/1
Y1 - 2006/12/1
N2 - The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of Al and Al-Mg alloy was investigated by means of polarization curves in solutions containing 300 ppm of Cl-1 and by surface analysis. The potentials for pitting corrosion of Al and Al-Mg alloy were evidently shifted to the noble direction by using the ECAP process, indicating that this process improves resistance to pitting corrosion. This increase in resistance seems to be attributable to the increase in formation rate of Al oxide films due to the increase in grain boundary with ECAP. The pitting corrosion resistance of Al and Al-Mg alloy anodized galvanostatically in H2SO4 solution after ECAP was also investigated using electrochemical techniques. The pitting corrosion resistance of Al and Al-Mg alloy was remarkably improved by anodizing. However, the pitting corrosion resistance of anodized Al-Mg alloy was better without ECAP than with ECAP.
AB - The effect of equal-channel angular pressing (ECAP) on the pitting corrosion resistance of Al and Al-Mg alloy was investigated by means of polarization curves in solutions containing 300 ppm of Cl-1 and by surface analysis. The potentials for pitting corrosion of Al and Al-Mg alloy were evidently shifted to the noble direction by using the ECAP process, indicating that this process improves resistance to pitting corrosion. This increase in resistance seems to be attributable to the increase in formation rate of Al oxide films due to the increase in grain boundary with ECAP. The pitting corrosion resistance of Al and Al-Mg alloy anodized galvanostatically in H2SO4 solution after ECAP was also investigated using electrochemical techniques. The pitting corrosion resistance of Al and Al-Mg alloy was remarkably improved by anodizing. However, the pitting corrosion resistance of anodized Al-Mg alloy was better without ECAP than with ECAP.
UR - http://www.scopus.com/inward/record.url?scp=35248900023&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35248900023&partnerID=8YFLogxK
M3 - Conference contribution
SN - 0878499857
SN - 9780878499854
T3 - Materials Science Forum
SP - 487
EP - 492
BT - Nanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
ER -