A dense hydrogen permeable composite membranes consisting of Ni and BaCe0.7Zr0.1Y0.2O3−δ were fabricated by a packing method at a lower temperature than the powder-mixing method. The results of back-scattered electron microscope and scanning electron microscope energy-dispersive analysis system of X-ray revealed that the membrane derived from the packing method showed the most uniform mixture of the Ni phase and the BaCe0.7Zr0.1Y0.2O3−δ phase. The hydrogen permeation measurement showed that a more uniform microstructure would result in higher hydrogen permeation.

Influence of Fabrication Process of Ni–BaCe0.7Zr0.1Y0.2O3−δ Cermet on the Hydrogen Permeation Performance. L.Yan, W.Sun, L.Bi, S.Fang, Z.Tao, W.Liu: Journal of Alloys and Compounds, 2010, 508[1], L5-8