Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Surface Modification of Functional Titanium Oxide to Improve Corrosion Resistance

내식성 향상을 위한 기능성 타이타늄 표면 개질

  • Park, Youngju (Department of Advanced Materials Engineering, Dong-eui University) ;
  • Jeong, Chanyoung (Department of Advanced Materials Engineering, Dong-eui University)
  • 박영주 (동의대학교 신소재공학과) ;
  • 정찬영 (동의대학교 신소재공학과)
  • Received : 2021.08.26
  • Accepted : 2021.09.04
  • Published : 2021.10.31
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Abstract

Titanium is applied in various industries due to its valuable properties and abundant reserves. Generally, if a highly uniform oxide structure and a high-density oxide film is formed on the surface through anodization treatment, the utility value such as color appearance and corrosion inhibition efficiency is further increased. The objective of this study was to determine improvement of water-repellent property by controlling titanium oxide parameters such as pore size and inter-pore distance to improve corrosion resistance. Oxide film structures of different shapes were prepared by controlling the anodization processing time and voltage. These oxide structures were then analyzed using a Field Emission Scanning Electron Microscope (FE-SEM). Afterwards, a Self-Assembled Monolayer (SAM) coating was performed for the oxide structure. The contact angle was measured to determine the relationship between the shape of the oxide film and the water-repellency. The smaller the solid fraction of the surface, the higher the water-repellent effect. The surface with excellent hydrophobic properties showed improved corrosion resistance. Such water-repellent surface has various applications. It is not only useful for corrosion prevention, but also useful for self-cleaning. In addition, a hydrophobic titanium may open up a new world of biomaterials to remove bacteria from the surface.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 및 정보통신기획평가원의 지역지능화혁신인재양성(Grand ICT연구센터) 사업의 연구결과로 수행되었음(IITP-2021-2020-0-01791). 박태인 학부생의 도움에 감사드립니다.

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