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

Xiao Dong Wang; Xiao Hong Wu; Rui Wang; Song Tao Lu

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Influences of Current Density on Tribological...

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

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

1892-1895

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.1892

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Online since:

May 2011

Authors:

Xiao Dong Wang, Xiao Hong Wu, Rui Wang, Song Tao Lu

Keywords:

AA6061 Aluminum Alloy, Ceramic Coating, Plasma Electrolytic Oxidation (PEO), Tribological Characteristic

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