Influences of Current Density on Tribological Characteristics of Ceramic Coatings on 6061 Al Alloy by Plasma Electrolytic Oxidation

Abstract:

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Plasma electrolytic oxidation (PEO) of an 6061 Al alloy was accomplished in an electrolyte with sodium hexametaphosphate (10 g/L) and sodium silicate (10 g/L) Coatings were produced at four different current densities (4, 6, 8 and 10 A/dm2). Phase composition, morphology and tribological characteristics of the coatings were studied by X-ray diffraction (XRD), scanning electron microscope (SEM) and ball-on-disk friction testing. The results show that among the four ceramic coatings which were produced under four current densities, the coating produced under the current density of 8 A/dm2 got the lowest wear rate with the value of 4.5 × 10-5 g/m.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

1892-1895

DOI:

10.4028/www.scientific.net/AMR.239-242.1892

Citation:

X. D. Wang et al., "Influences of Current Density on Tribological Characteristics of Ceramic Coatings on 6061 Al Alloy by Plasma Electrolytic Oxidation", Advanced Materials Research, Vols. 239-242, pp. 1892-1895, 2011

Online since:

May 2011

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$35.00

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