Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Surface Coating and Corrosion Characteristics of Bipolar Plates of PEMFC Application

PEMFC용 분리판 표면코팅 및 부식성 평가

  • Kang, Kyung-Min (Dept. of Hydrogen & Fuel Cell Technology, Dongshin University) ;
  • Kim, Dong-Mook (Dept. of Hydrogen & Fuel Cell Technology, Dongshin University) ;
  • Choi, Jeong-Sik (Dept. of Hydrogen & Fuel Cell Technology, Dongshin University) ;
  • Cha, In-Soo (Dept. of Hydrogen & Fuel Cell Technology, Dongshin University) ;
  • Yun, Young-Hoon (Dept. of Hydrogen & Fuel Cell Technology, Dongshin University)
  • 강경민 (동신대학교 수소에너지학과) ;
  • 김동묵 (동신대학교 수소에너지학과) ;
  • 최정식 (동신대학교 수소에너지학과) ;
  • 차인수 (동신대학교 수소에너지학과) ;
  • 윤영훈 (동신대학교 수소에너지학과)
  • Received : 2011.01.31
  • Accepted : 2011.04.22
  • Published : 2011.04.30
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Abstract

Stainless steel 304 and 316 plates were deposited with the multi-layered coatings of titanium film (0.1 um) and gold film (1-2 um) by an electron beam evaporation method. The XRD patterns of the stainless steel plates modified with the multi-layered coatings showed the crystalline phases of the external gold film and the stainless steel substrate. Surface microstructural morphologies of the stainless steel bipolar plates modified with multi-layered coatings were observed by AFM and FE-SEM images. The external gold films formed on the stainless steel plates showed micro structure of grains of about 100 nm diameter. The grain size of the external surface of the stainless steel plates increased with the gold film thickness. The electrical resistance and water contact angle of the stainless steel bipolar plates covered with multi-layered coatings were examined with the thickness of the external gold film.

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References

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