Characterization of Cr-Ni-ZrO2 Composite Coatings Electrodeposited from Cr(III) Plating Bath

Abstract:

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New Cr-Ni-ZrO2 composite coatings are prepared by composite electrodeposition. The morphology, composition and corrosion resistance of as-deposited Cr-Ni-ZrO2 coatings are systematically characterized by means of SEM, EDS. The hardness of as deposited and annealed Cr-Ni-ZrO2 coatings are also discussed. The electrochemical corrosion tests are conducted by means of Tafel plots. Results of SEM and EDS show that Cr-Ni-ZrO2 composite coatings with homogeneous and crack-free morphology have been prepared successfully; the mass proportion of Zr in the as-deposited coatings is up to 7.85%. The hardness values of Cr-Ni-ZrO2 coatings are higher than that of Cr-Ni alloy coatings. Furthermore, the hardness values increase and then decrease with the temperature increasing when annealed. Analysis of Tafel plots demonstrates that Cr-Ni-ZrO2 coatings have much better corrosion resistance than that of Cr-Ni coatings.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

2733-2737

DOI:

10.4028/www.scientific.net/AMR.239-242.2733

Citation:

X. Z. He et al., "Characterization of Cr-Ni-ZrO2 Composite Coatings Electrodeposited from Cr(III) Plating Bath", Advanced Materials Research, Vols. 239-242, pp. 2733-2737, 2011

Online since:

May 2011

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Price:

$35.00

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