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Formation of Porous Oxide Layer on Stainless Steel by Anodization in Hot Glycerol Electrolyte

고온 글리세롤 전해질에서 양극산화를 이용한 나노구조 스테인리스 스틸 산화막의 형성

  • Lee, Jaewon (School of Nano & Materials Science and Engineering, Kyungpook National University) ;
  • Choi, Hyun-Kuk (School of Nano & Materials Science and Engineering, Kyungpook National University) ;
  • Kim, Moon Gab (School of Nano & Materials Science and Engineering, Kyungpook National University) ;
  • Lee, Yong Sei (School of Nano & Materials Science and Engineering, Kyungpook National University) ;
  • Lee, Kiyoung (School of Nano & Materials Science and Engineering, Kyungpook National University)
  • 이재원 (경북대학교 나노소재공학부) ;
  • 최현국 (경북대학교 나노소재공학부) ;
  • 김문갑 (경북대학교 나노소재공학부) ;
  • 이영세 (경북대학교 나노소재공학부) ;
  • 이기영 (경북대학교 나노소재공학부)
  • Received : 2020.02.28
  • Accepted : 2020.03.24
  • Published : 2020.04.10

Abstract

In this study, nanoporous iron oxide layers were fabricated by the anodization of 304 series stainless steel. K2HPO4/glycerol solution was used as an electrolyte for anodization. We investigated the anodization behavior according to various parameters such as electrolyte concentration, reaction temperature, applied voltage, and reaction time. As a result of anodization, we confirmed that the anodic growth rate of oxide layer on 304 series stainless steel increased with increasing the electrolyte temperature and applied potential. In order to form well-ordered porous nanostructures, the electrolyte temperature was at 160 ℃, and the applied potential was at 30 V in 10 wt% K2HPO4/glycerol electrolyte.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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