Characterization of new corrosion resistant nickel-zinc-phosphorus alloys obtained by electrodeposition
- Physical Chemistry Dept., General Motors Research Labs., Warren, MI (US)
The authors discuss the electrodeposition of a family of NiZnP coatings studied at a rotating cylinder electrode by varying the temperature (45{sup 0}-80{sup 0}C) and the applied current density (0.03-0.95 A/cm/sup 2/). Two of the coatings were nickel-rich, two were zinc-rich, and a fifth coating had approximately equal amounts of Ni and Zn. The coatings were characterized using SEM/EDX and Auger depth profile techniques. A Ni-rich alloy with a supersaturated amount of zinc and the approximate composition 59Ni-39Zn-2P was obtained at all temperatures in the high speed electrodeposition current density range 0.6-1.0 A/cm/sup 2/. The supersaturated alloy could be deposited at current efficiencies higher than 80% at all temperatures. The corrosion rate of this coating was the lowest among the various NiZnP coatings.
- OSTI ID:
- 5248883
- Journal Information:
- Journal of the Electrochemical Society; (USA), Vol. 136:8; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CORROSION RESISTANT ALLOYS
ELECTRODEPOSITION
NICKEL ALLOYS
CORROSION RESISTANCE
ZINC ALLOYS
AUGER ELECTRON SPECTROSCOPY
CURRENT DENSITY
ELECTRODES
POLARIZATION
PROTECTIVE COATINGS
SCANNING ELECTRON MICROSCOPY
ALLOYS
COATINGS
DEPOSITION
ELECTROLYSIS
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
LYSIS
MICROSCOPY
SPECTROSCOPY
SURFACE COATING
360105* - Metals & Alloys- Corrosion & Erosion
400400 - Electrochemistry
360101 - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies