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진철규(C. K. Jin),장창현(C. H. Jang),정민근(M. K. Jung),강충길(C. G. Kang) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.10
Thin metallic plate with micro-pattern can be applied to useful products such as electrical and automobile parts, bipolar plates in fuel cells, and plate heat exchangers, etc. There are several processes to manufacture thin metallic plate such as stamping, rubber forming, vacuum die-casting, and semi-solid forming. This paper introduces forming processes for bipolar plate in fuel cells. In stamping and rubber forming, aluminum, stainless steel, and titanium could be used for bipolar plate. In vacuum die casting and semi-solid forming, only aluminum could be used but very precise and soundness bipolar plate was manufactured.
Titanium 소재를 이용한 연료전지 분리판 제조 특성 및 TiN 박막 물성 평가
이경훈(K. H. Lee),진철규(C. K. Jin),강충길(C. G. Kang) 한국소성가공학회 2013 한국소성가공학회 학술대회 논문집 Vol.2013 No.10
In this study, the rubber pad for forming process is used to fabricate the micro-channel plate of Titanium for the fuel cell. The geometry of plate should have micro-channel and thin for high-efficiency heat exchanger. The micro-channel plate was fabricated using a hydraulic press with a capability of 200 ton according to the various parameters (type of plate, plate thickness, punch speed, press pressure, rubber thickness, rubber hardness, draft angle)of the rubber pad forming in order to evaluate the formability. TiN films were deposited by reactive DC magnetron sputtering (DCMS) with an electromagnetic field system (EMFS). The microstructure and corrosion resistance of the TiN-coated Titanium substrates were estimated by Nano-indentationXP (MTS), Atomic Force Microscopy (AFM), and electrochemical methods. This improved corrosion resistance of the TiN films could be attributed to the densification of the film caused by enhancement of nitrification with increasing high reactive nitrogen radicals.