Title:
Α-AL2O3 PHASE ANODIC ALUMINUM OXIDE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/054027
Kind Code:
A1
Abstract:
An anodic aluminum oxide preparation method is provided. The anodic aluminum oxide preparation method may comprise the steps of: anodizing aluminum in an electrolyte containing oxalic acid, thereby preparing anodic aluminum oxide having upper pores; applying a water-repellent coating to the upper pores of the anodic aluminum oxide; etching the lower part of the anodic aluminum oxide having the upper pores to which the water-repellent coating has been applied, thereby forming lower pores; immersing the anodic aluminum oxide in a pore-widening solution, thereby widening the diameter of the lower pores such that the diameter of the lower pores becomes equal to the diameter of the upper pores; and heat-treating the anodic aluminum oxide in which the upper pores and the lower pores have the same diameter.
Inventors:
CHOA YONG HO (KR)
YI JAE HO (KR)
SHEN HAI SHAN (KR)
PARK JI YOUNG (KR)
YI JAE HO (KR)
SHEN HAI SHAN (KR)
PARK JI YOUNG (KR)
Application Number:
PCT/KR2023/013317
Publication Date:
March 14, 2024
Filing Date:
September 06, 2023
Export Citation:
Assignee:
IUCF HYU ERICA CAMPUS (KR)
International Classes:
C25D11/10; B05D5/08; C25D11/18
Domestic Patent References:
| WO2015111542A1 | 2015-07-30 |
Foreign References:
| JP2013180263A | 2013-09-12 | |||
| JP2009224146A | 2009-10-01 | |||
| KR20190090008A | 2019-07-31 | |||
| JP2008156705A | 2008-07-10 |
Attorney, Agent or Firm:
PARK, Sang Youl (KR)
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