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.

• Keywords: Titanium;Nano-sized TiN_x;Spark plasma sintering (SPS);Separator;Fuel cell;