A nickel foam with a three-dimensional reticulated structure has been prepared by an electrodeposition technique. The microcrystalline structure of the nickel layer was maintained following treatment in air at 600°C for 4 min. Sintering in a reductive decomposed NH3 atmosphere for 40 min, at either 980 or 850°C, transformed the product into a compact nickel crystal with a flat surface and large crystal grains.
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