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:
The electroless nickel-phosphor coatings containing molybdenum disulfide nanoparticleswere prepared and analyzed in this paper. The effects of incorporation of MoS2 into the Ni-P coatingon the morphology of the coating surface and corrosion properties were also studied. Corrosion testswere conducted inside a salt spray box with NaCl solution (5.0 wt%). The corrosional surfaces werestudied and analyzed through optical microscope, X-ray spectrometer (XRD) and scanning electronmicroscopy (SEM). The investigation on the relationship between heat-treatment and the corrosionresistance of the coatings showed that the corrosion resistance of the composite coating became worsebecause of the occurrence of transformation from non-crystalline to crystalline, and then increased themetastable intergradation of the composite coating. Meanwhile, the experimental results also showedthat corrosion resistance of the coating containing MoS2 was higher than that of steel substrate. Thecorrosion mechanism of the composite coatings was mainly ascribed to the formation of micro-cellaround the nanosized MoS2 particles, and the active ion like Cl- destroyed the surface film andinduced the corrosion towards the inside part of 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.373-374.256.pdf
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