ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper investigated the effect of nano-SiC particle on microstructure andproperties of brush electroplated nano-Al2O3/Ni composite coating. Three kinds of coatings,such as pure nickel coating, nano-Al2O3/Ni composite coating and nano-SiC-Al2O3/Nicomposite coating, were fabricated on 1045 steel substrate. Before deposited, Zeta potential ofnano-particles in the solution was examined. The results show Zeta potential of thenanoparticles in the nano-Al2O3/Ni electrolyte is negative, but that of the nanoparticles innano-SiC-Al2O3/Ni electrolyte is positive when the pH value of electrolyte is about 7.5. Energydispersive spectroscopy (EDS) results show Al element content in the nano-Al2O3/Ni coating is5.65%, while the content of Al and Si elements in nano-SiC-Al2O3/Ni coating is 5.63% and4.86% respectively. It confirms that nano-SiC particle co-deposited in the composite coatingwhile nano-Al2O3 particle content keeps constant. The microhardness of nano-SiC-Al2O3/Nicoating exhibits the highest, while the pure nickel coating is the lowest. And surfacemorphology of nano-SiC-Al2O3/Ni coating is the most smooth and compact among the threecoatings. The wear test results reveal that wear resistance of nano-SiC-Al2O3/Ni coating is 1.7times of that of nano-Al2O3/Ni coating, and 2.3 times of that of pure nickel coating. The aboveresults show the nano-SiC particle services a strengthening effect on the combinationperformance of nano-SiC-Al2O3/Ni coating
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.285.pdf
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