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Synthesis and Characterization of Electroless Nanocrystalline Ni-P on Aluminium

N. Latha, V. Raj, M. Selvam and P. Manisankar

A novel, convenient and cost effective method for synthesis of nanocrystalline nickel-phosphorus deposits were prepared by electroless deposition process on pre-treated aluminium from glycine bath. The samples were prepared by 80oC for 30 s, 600 s and 1800 s in acidic medium in the as-deposited condition. The nanocrystalline Ni-P surfaces were characterized by scanning electron microscopy, atomic force microscopy, energy dispersive X-ray analysis and X-ray diffraction methods. It was found that asdeposited Ni-P coatings formed in 30 s and 600 s were nanocrystalline and they were transformed into amorphous in the coating formed at 1800 s in the deposited condition.