Title of article :
Characterization of Nano- Crystalline NiP Alloy Coatings Electrodeposited at Various Current Densities
Author/Authors :
Faride, Lekmine Physics laboratory of Thin Layers and Applications - University Abbes Laghrour - Khenchela, Algeria , Hachemi, Ben Temam Physics laboratory of Thin Layers and Applications - Biskra University - Biskra, Algeria , Elhachmi, Guettaf Temam Physics laboratory of Thin Layers and Applications - Biskra University - Biskra, Algeria
Abstract :
Nickel phosphorus alloy coatings were prepared by electrodeposition route from sulfate electrolyte bath
at various current densities. SEM studies revealed that spherical grains covered the entire surface with uniform
distribution. EDX results showed a linear increase of P content in the developed deposits with current density,
causing an increase in the grains size and a drop in hardness values. XRD studies revealed monocrystalline
orthorhombic alloys at low phosphorus content (10.88 wt. %). Corrosion test results showed that 1 A.dm-2 is the
best applied current density providing the nobler Ecorr (-171.4 mV) and the lower icorr (4.64 μA/cm2).
Keywords :
Electrochemical properties , NiP alloy coatings , Crystal structure , P content , Hardness
Journal title :
Iranian Journal of Materials Science and Engineering
