Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
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Performance of Al-Zn Coating by Arc Thermal and Plasma arc Thermal Spray Processes in 3.5% NaCl Solution

3.5% NaCl에서 Arc Thermal and Plasma Arc Spray 공법이 적용된 Al- Zn 코팅 강재의 내 식 성능 평가에 관한 연구

  • 잔낫 (한양대학교 스마트시티공학과) ;
  • 이한승 (한양대학교 ERICA 건축학부)
  • Published : 2021.11.12
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Abstract

In the present study, Al-Zn coating was deposited by Arc thermal (AT) and plasma arc thermal (PAT) spray processes, and their corrosion characteristics were studied in 3.5% NaCl through electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM) and mechanical tests. The bond adhesion result showed that plasma arc sprayed coating had a higher value attributed to compact, dense, and less porous coating compared to arc thermal spray coating which contains defects/pores and uneven morphology as revealed by scanning electron microscope analysis. Electrochemical results revealed that the plasma arc sprayed coating had a high polarization resistance at early stage of immersion, suggesting its excellent corrosion protection performance.

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Acknowledgement

This research was supported by basic science research program through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT and Future Planning (No. 2015R1A5A1037548).