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Experimental Study on Corrosion and Thermal Conductivity Characteristics of Thermal Spray Coating for Sea Water Heat Exchanger

해수용 열교환기 적용을 위한 열분사 코팅의 부식 및 열전도 특성에 관한 실험적 연구

  • Cho, Meang-Ik (Offshore CCS Research Unit, Maritime & Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Huh, Cheol (Offshore CCS Research Unit, Maritime & Ocean Engineering Research Institute, Korea Institute of Ocean Science and Technology) ;
  • Kwon, Young-Chul (Department of Mechanical Engineering, Sunmoon University) ;
  • Kwon, Jeong-Tae (School of Mechanical Engineering, Hoseo University)
  • 조맹익 (한국해양과학기술원 선박해양플랜트연구소 해양CCS연구단) ;
  • 허철 (한국해양과학기술원 선박해양플랜트연구소 해양CCS연구단) ;
  • 권영철 (선문대학교 기계공학과) ;
  • 권정태 (호서대학교 기계공학부)
  • Received : 2013.11.01
  • Accepted : 2013.12.05
  • Published : 2013.12.31

Abstract

In the present study, the characteristics of corrosion and thermal conductivity of thermal spray coatings for seawater heat exchangers were examined experimentally. The coating types of theZn and Al thermal spray coatings with additional epoxy and silicone sealers were tested. To examine the corrosion characteristics of the thermal spray coating, the cyclic voltamogram curve was measured followed by SEM imaging for surface characterization. The laser flash method was usedto measure the thermal conductivity of the specimen. The conductivity test results showed that thermal conductivity decreased by3 ~ 4% with the silicone sealer and decreased by 70 ~ 75% with the epoxy sealer.

Keywords

Thermal Spray Coating;Impedance;Resistance;Sea water;SEM

Acknowledgement

Grant : 해양심층수의 에너지 이용기술개발

Supported by : 해양수산부

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Cited by

  1. Study on the Immersion Corrosion Characteristics of Thermal Spray Coating for Sea Water Heat Exchanger vol.15, pp.1, 2014, https://doi.org/10.5762/KAIS.2014.15.1.32