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A technique for the electrochemical structuring of directionally solidified NiAl–Mo eutectic by selective phase dissolution is presented. Local matrix dissolution at 200mV SHE in 1M HCl of pH 1 yielded the grid of Mo nanowires spanning along the central part of the sample. On the other hand, the dissolution of the fibrous minor phase while passivating the continuous NiAl matrix resulted in continuous...
Directional solidification of a eutectic is a novel route for the production of nanostructures. This method was applied to the quasibinary NiAl–Re system. Re as the minor phase forms fibers, which are parallel aligned in the NiAl matrix. At a temperature of 1690±10°C using a thermal gradient of 40°Ccm −1 and a growth rate of 30mmh −1 , the fibers formed had a diameter of about 400nm...
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