Title:
METHOD FOR MANUFACTURING ALUMINUM ANODIZED FILM HAVING PILLAR-ON-PORE STRUCTURE BY USING PHOSPHORIC ACID
Document Type and Number:
WIPO Patent Application WO/2021/029645
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing an aluminum anodized film having a pillar-on-pore structured surface and to aluminum coated with an anodized film having a pillar-on-pore structured surface, manufactured using same. In the present invention, an anodized aluminum layer formed on the surface of aluminum is provided with pillar-on-pore forms for pore morphology, diameter, and density through control of anodization voltage and time and etching time by using phosphoric acid as an electrolyte for anodization, whereby a sufficient pore size can be secured without separate pore expansion and tertiary anodization. Thus, the present invention has an advantageous effect of achieving a bundle-type pillar-on-pore structure even though skipping the two processing steps, and has an economic effect of manufacturing aluminum having a controlled 3-dimensional anodized film structure at low cost in a short time.
Inventors:
JEONG CHANYOUNG (KR)
Application Number:
PCT/KR2020/010592
Publication Date:
February 18, 2021
Filing Date:
August 11, 2020
Export Citation:
Assignee:
DONG EUI UNIV INDUSTRIAL ACADEMIC COOPERATION FOUNDATION (KR)
International Classes:
C25D11/08; C25D11/04; C25D11/12; C25D11/18
Foreign References:
| KR20120028674A | 2012-03-23 | |||
| KR20170033073A | 2017-03-24 | |||
| KR20110085106A | 2011-07-27 | |||
| JP2007231405A | 2007-09-13 | |||
| KR101647983B1 | 2016-08-12 |
Other References:
JEONG CHANYOUNG: "Observation of Diverse Aluminum Oxide Structures in a Phosphoric Acid Solution according to the Applied Anodization Voltage", JOURNAL OF THE MICROELECTRONICS AND PACKAGING SOCIETY, vol. 26, no. 1, 30 March 2019 (2019-03-30), Busan Korea, pages 35 - 39, XP055781383, ISSN: 1226-9360, DOI: 10.6117/kmeps.2019.26.1.0035
Attorney, Agent or Firm:
WIE, Byoung-Gap (KR)
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