Tribological Performance of Ceramic Composite Coatings Obtained through Microarc Oxidation on Ly12 Aluminum Alloy

Shu Hua Li; Yu Jun Yin; Da Wei Shen; Yuan Yuan Zu; Chang Zheng Qu

doi:10.4028/www.scientific.net/KEM.537.7

Paper Titles

Preface

Factors Affecting the Fracture Strength of Freestanding Diamond Films
p.1

Tribological Performance of Ceramic Composite Coatings Obtained through Microarc Oxidation on Ly12 Aluminum Alloy
p.7

Effects of Substrate Temperature on the Properties of Silicon Nitride Films by PECVD
p.12

Study on Inorganic Coating of Porous Nitride Radome
p.16

Study on Hole-Sealing Coating of Porous Silicon Nitride Surface
p.20

The Effect of SiC Coating on the Joint of C/C and LAS
p.24

Crack Formation and Distribution of SiC Coating Prepared by CVD on Carbon/Carbon Composites
p.28

A C/SiC Graded Coating on C/C Composites by LPCVD in the Methyltrichlorosilane/Hydrogen System
p.32

HomeKey Engineering MaterialsKey Engineering Materials Vol. 537Tribological Performance of Ceramic Composite...

Tribological Performance of Ceramic Composite Coatings Obtained through Microarc Oxidation on Ly12 Aluminum Alloy

Abstract:

A dense ceramic oxide coating approximately 30µm thick was prepared on a Ly12 Al alloy by microarc oxidation in an alkali-silicate electrolytic solution. The morphology and microstructure were analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD). Coating thickness and surface roughness (Ra) were measured after the coating had been synthesized. The tribological performance of the coatings was evaluated using a dry sand abrasion test and a solid particle erosion test. The results show that microarc oxidation coatings consist of the loose superficial layer and the inner dense layer. Both inner layer and out layer are composed of α-Al2O3 and γ-Al2O3, While the Al6Si2O3 phase is observed only in out loose layer. The average of the microhardness of the coating is 2096Hv.

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Periodical:

Key Engineering Materials (Volume 537)

Pages:

7-11

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.537.7

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Online since:

January 2013

Authors:

Shu Hua Li, Yu Jun Yin, Da Wei Shen, Yuan Yuan Zu, Chang Zheng Qu

Keywords:

Aluminium Alloy, Ceramic Coating, Micoarc Oxidation, Tribological Performance

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References

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