Microstructure and properties of rare earth CeO2-doped graphene composite coatings prepared by MAO on AA7050
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Yu Zong
Abstract
In this paper, ceramic coatings were prepared on the surface of 7050 high strength aluminum alloy using a micro-arc oxidation process in a silicate electrolyte combined with the rare earth element cerium or graphene. To analyze the surface morphology, roughness, phase composition, and corrosion resistance, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectrometry, and electrochemical measurements were used, respectively. It was shown that the micropore size of the composite coatings, which mainly consisted of α-Al2O3 and γ-Al2O3, decreases and the density improved with the simultaneous addition of 4 g · L-1 of CeO2 and 10 g · L-1 of graphene to the electrolyte. In addition, with the addition of CeO2 and graphene, the roughness was the lowest and the corrosion resistance was significantly improved.
© 2020 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- CONTENTS
- Original Contributions
- Residual stress analysis, mechanical and metallurgical properties of dissimilar weldments of Monel 400 and AISI 316
- Dry sliding wear behaviour of sub-zero processed Cr–V ledeburitic steel Vanadis 6 against three counterpart types
- Computational thermodynamics/kinetics aided design for the microstructure of pearlitic steels during cooling process
- Brazed coatings for steam turbine blades: impact of the tape architecture and composition on mechanical properties
- Microstructure and properties of rare earth CeO2-doped graphene composite coatings prepared by MAO on AA7050
- Investigation of the effect of solidification rate on microstructure of Al-0.13Si-0.3Fe DC-cast alloy using EBSD and DSC techniques
- Crystallization behavior, Al-Ce intermetallic formation, and microstructure refinement of near-eutectic Al–Si alloys by rare-earth element additions
- Fuzzy multicriteria decision-making-based optimal Zn–Al alloy selection in corrosive environment
- Notifications
- DGM
- Conferences
- Imprint
Articles in the same Issue
- CONTENTS
- Original Contributions
- Residual stress analysis, mechanical and metallurgical properties of dissimilar weldments of Monel 400 and AISI 316
- Dry sliding wear behaviour of sub-zero processed Cr–V ledeburitic steel Vanadis 6 against three counterpart types
- Computational thermodynamics/kinetics aided design for the microstructure of pearlitic steels during cooling process
- Brazed coatings for steam turbine blades: impact of the tape architecture and composition on mechanical properties
- Microstructure and properties of rare earth CeO2-doped graphene composite coatings prepared by MAO on AA7050
- Investigation of the effect of solidification rate on microstructure of Al-0.13Si-0.3Fe DC-cast alloy using EBSD and DSC techniques
- Crystallization behavior, Al-Ce intermetallic formation, and microstructure refinement of near-eutectic Al–Si alloys by rare-earth element additions
- Fuzzy multicriteria decision-making-based optimal Zn–Al alloy selection in corrosive environment
- Notifications
- DGM
- Conferences
- Imprint
