Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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The Characteristic of Titanium Composites Including of Nano-sized TiNx for Stack Separator

  • Park, Sung-Bum (School of Advanced Materials & Systems Engineering, Kumoh National Institute of Technology) ;
  • Ban, Tae-Ho (School of Advanced Materials & Systems Engineering, Kumoh National Institute of Technology) ;
  • Woo, Heung-Sik (Department of Safety Environmental System Engineering, Dongguk University) ;
  • Kim, Sung-Jin (School of Advanced Materials & Systems Engineering, Kumoh National Institute of Technology)
  • Published : 2010.04.28
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Abstract

The fabrication of interconnect from titanium powders and $TiN_x$ powders is investigated. Corrosion-resistant titanium and $TiN_x$ are used as reinforcement in order to reveal high heat and corrosion resistance at the elevated temperature. We fabricated the plates for interconnect reinforced with $TiN_x$ by mixing titanium powders with 10 wt.% of nano-sized $TiN_x$. Spark Plasma Sintering (SPS) was chosen for the sintering of these composites. The plate made of titanium powders and $TiN_x$ powders demonstrates higher corrosion resistance than that of the plate of titanium powders alone. The physical properties of specimens were analyzed by performing hardness test and biaxial strength test. The electrochemical properties, such as corrosion resistance and hydrogen permeability at high temperature, were also investigated. The microstructures of the specimens were investigated by FESEM and profiles of chemical compositions were analyzed by EDX.

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