Title:
METHOD FOR MANUFACTURING EXTRUDED MATERIAL OF HETEROGENEOUS ALUMINUM-CARBON NANOTUBE COMPOSITE HAVING IMPROVED CORROSION RESISTANCE, AND EXTRUDED MATERIAL OF HETEROGENEOUS ALUMINUM-CARBON NANOTUBE COMPOSITE MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2021/194007
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing extruded material of heterogeneous aluminum-carbon nanotube composite extruded material having improved corrosion resistance, and extruded material of heterogeneous aluminum-carbon nanotube composite manufactured thereby, the method comprising the steps of: (a) manufacturing an extruded material comprising an heterogeneous aluminum-carbon nanotube composite; and (b) forming a hard oxide film on the surface of the extruded material by anodizing the extruded material in a mixed solution of sulfuric acid and oxalic acid. According to the present invention, a hard oxide film, which has a thickness of at least 100 µm, is firm and exhibits excellent corrosion resistance, abrasion resistance and insulation properties, may be formed on the surface of a heterogeneous composite (extruded material of heterogeneous carbon nanotube reinforced aluminum matrix composite) which is known for being difficult to hard-anodize unlike existing general aluminum material due to a difference in corrosion properties, and thus the utilization of the heterogeneous composite may be notably improved.
Inventors:
KWON HAN SANG (KR)
Application Number:
PCT/KR2020/006646
Publication Date:
September 30, 2021
Filing Date:
May 21, 2020
Export Citation:
Assignee:
NAT UNIV PUKYONG IND UNIV COOP FOUND (KR)
International Classes:
B21C23/02; B22F3/105; B22F9/04; C01B32/158; C25D11/10
Domestic Patent References:
| WO2012055155A1 | 2012-05-03 |
Foreign References:
| KR20160149735A | 2016-12-28 | |||
| KR20140005426A | 2014-01-15 | |||
| KR20150134460A | 2015-12-02 | |||
| KR20180005972A | 2018-01-17 |
Attorney, Agent or Firm:
KIM, Jung Su (KR)
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