吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊1): 106-110.

• paper • Previous Articles     Next Articles

Effects of SiC nano-particles on microstructure and the corrosion resistance of micro-arc oxidation films produced on aluminium alloy

YANG Yue, CHEN Bin   

  1. College of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2010-07-16 Online:2011-09-01 Published:2011-09-01

Abstract:

To improve the corrosion resistance of the ceramic coating fabricated by micro-arc oxidation on aluminium alloy,ceramic coatings embedded with SiC nano-particles at different oxidation time were produced by adding SiC nano-particles into electrolyte during MAO process.The morphology,phase composition and thickness of the coatings were investigated by Field Emission Scanning Electron Microscopy(FESEM) and X-ray diffraction(XRD).The thickness of the coatings was determined by Optical Microscope.Simultaneously,the corosion resistance properties of the composite coatings were evaluated by Electrochemical Working Station.The results show that the content of SiC particles increased with the increasing time,and the corrosion resistance of the ceramic coatings with SiC nano-particles was improved significantly compared to the ceramic coatings without SiC nano-particles.

Key words: metallic materials, micro-arc oxidation, aluminium alloy, corrosion resistance, SiC nano-particles

CLC Number: 

  • TG113


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