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| Effect of Cr particle contents on microstructure of the electrodeposied Ni--Cr nanocomposite\ |
| ZHANG Yan 1;2; PENG Xiao 2 ; WANG Fuhui2 |
1.School of Science; Shenyang Univesity of Technology; Shenyang 110023
2.Insititute of Metal Research; Chinese Academy of Science; Shenyang 110016 |
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Cite this article:
ZHANG Yan PENG Xiao WANG Fuhui. Effect of Cr particle contents on microstructure of the electrodeposied Ni--Cr nanocomposite\. Chin J Mater Res, 2009, 23(6): 610-615.
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Abstract Novel Ni--Cr nanocomposite coatings were fabricated by composite electrodeposition of Ni and Cr nanoparticles from a nickel sulfate bath. The influence of the Cr contents in nanocomposite film was investigated by changing Cr concentration in electrolyte bath, agitation rate and current density. Surface morphologies and microstructure of Ni--Cr coatings were observed by means of SEM / EDAX, TEM and XRD. It was found that the codeposition of Cr nanoparticles disturbed the crystal growth of the nickel matrix, leading to a change from the preferential Ni on (200) planes to the homogeneous growth on (200), (111) and (220) planes. This demonstrated that the nanoparticles codeposition promoted the nucleation of new nickel grains. The more the content of the Cr nanoparticles codeposited, the finer the
electrodeposited Ni matrix. Meanwhile, the electrodeposition mechanism of the Ni--Cr nanocomposite system was discussed.
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Received: 18 February 2009
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| Fund: Supported by National Nature Science Foundation of China No.50571108. |
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