Structure and Corrosion Behavior of Electrodeposited Ni-P Alloys

Publisher Website
Google Scholar
Abstract
The effect of phosphorus content on the structure and corrosion resistance of electrodeposited Ni-P alloys was investigated. The phosphorus content of the plated film decreased with increasing current density and decreasing H3PO3 content in plating electrolyte. X-ray diffraction revealed that the deposits containing 16.7-25.6at% P are amorphous, while 8.7 at% P alloy consists of the mixture of amorphous matrix with fcc crystals. The amorphous Ni-P alloy deposits (≥16.7at% P) possess excellent corrosion resistance compared with a Ni-8.7 P deposit containing crystalline fcc phase and a pure Ni deposit. The optical micrographs and EPMA analysis of the cross section of amorphous Ni-P deposits showed that the deposits were composed of finely spaced lamellar structure consisting of alternately low and high phosphorus content layers.

This publication has 0 references indexed in Scilit: