Electrodeposited composite coating of Ni-W-P with nano-sized rod- and spherical-shaped SiC particles
- Central Metallurgical R and D Institute (CMRDI), P.O. Box 87, Hellwan, Cairo (Egypt)
In this research, Ni-W-P-SiC nanocomposite coatings are electrodeposited from the plating solution containing suspension of nano-sized spherical- and rod-shaped SiC particles. The influence of SiC particle charge, applied current density, surfactant addition and the particle shape on the SiC incorporation rate has been studied. The phase structure, microhardness and wear resistance of Ni-W-P-SiC nanocomposite coatings were evaluated using X-ray diffraction (XRD), microhardness tester and wear test apparatus. The surface morphology of the produced coatings and worn surfaces has been investigated using scanning electron microscope (SEM). Additionally, the composite coating exhibited higher hardness and wear resistance than the pure Ni-W-P alloy. Regardless the particle shape, the mechanical characteristics of composite coatings are improved with increasing of SiC wt.% into the matrix. The corrosion behavior of the produced coatings was studied using anodic polarization measurements. The nanocomposite coating incorporating SiC rods exhibited higher mechanical and corrosion performance compared with deposits with spherical SiC nano-particles.
- OSTI ID:
- 21195069
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 1; Other Information: DOI: 10.1016/j.materresbull.2008.03.008; PII: S0025-5408(08)00101-3; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COATINGS
CORROSION
DEPOSITS
ELECTRODEPOSITION
MICROHARDNESS
MORPHOLOGY
NANOSTRUCTURES
NICKEL ALLOYS
PARTICLES
PHOSPHORUS ADDITIONS
PROCESS SOLUTIONS
SCANNING ELECTRON MICROSCOPY
SILICON CARBIDES
SPHERICAL CONFIGURATION
SURFACE PROPERTIES
SURFACES
TUNGSTEN ALLOYS
WEAR RESISTANCE
X-RAY DIFFRACTION