스퍼터링으로 Pd가 코팅된 Ni48Nb32Zr20 합금분리막의 수소 투과 성능

초록

In modern times, when a change in the energy paradigm is required, hydrogen is an attractive energy source. Among these hydrogen purification technologies, technology using a membrane is attracted attention as a technology that can purify high purity hydrogen at low cost. However, palladium(Pd), which is mostly used because of its excellent hydrogen separation performance, is very expensive, so a replacement material is needed. In this study, a alloy membrane was manufactured from an alloy of niobium (Nb), which has high hydrogen permeability but is weak to hydrogen embrittlement, and nickel (Ni) and zirconium (Zr), which have low hydrogen permeability but are highly durable. Hydrogen permeation characteristics were confirmed under conditions of 350~450 °C at 1 to 4 bar. The maximum hydrogen permeation flux was 0.69 ml/cm2 /min for the Ni48Nb32Zr20 alloy membrane without Pd coating, and 13.05 ml/cm2 /min for the Pd coated alloy membrane.

키워드