Deposition of Ni - Fe / Si 3 N 4 Nanocomposite Prepared by Electroplating
نویسنده
چکیده
Ni-Fe/Si3N4 nanocomposite coatings with various ratio of Si3N4 to Na-saccharine were prepared by electrodeposition technique. The effect of Si3N4 nanoparticulates in the Ni-Fe nanocomposite coatings was investigated in relation to the ratio of Si3N4 to Na-saccharine in the plating bath. X-ray diffraction analysis showed that the Ni-Fe nanocomposite coating has face center cubic structure (FCC). However, a mixture of body center cubic (BCC) and face center cubic (FCC) phase was observed when the ratio of Si3N4 to Na-saccharine is 8.3. The crystallite size of Ni-Fe nanocomposite coating reduced when the ratio of Si3N4 to Na-saccharine was increased. From the elemental mapping procedure, inclusions of silicon were uniformly distributed in Ni-Fe composite coating and contributed in increasing the microhardness.
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