Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 13, Issue 7, Pages 7157-7174Publisher
ESG
DOI: 10.20964/2018.07.73
Keywords
composite anodic films; corrosion resistance; wear resistance; nanoparticles; magnesium alloy
Categories
Funding
- National Key Research and Development Program of China [2016YFB0301100]
- National Natural Science Foundation of China [51701029, 51531002, 51474043]
- Student Research Training Program of Chongqing University [CQU-SRTP-2017153]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2016 jcyjA0388]
- Research and Development Project from COMAC and BOEING [2017-GT-088]
- China Postdoctoral Science Foundation [2017M620410]
- Chongqing Postdoctoral Scientific Research Foundation [Xm2017010]
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In this work, the samples of magnesium alloy AZ31 were anodized in two kinds of electrolytes, each with and without alumina nanoparticles. The structure, morphology and composition of four kinds of films were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersal spectroscopy (EDS), respectively. The corrosion behaviors of films were studied using electrochemical impedance spectroscopy and potentidynamic polarization curves. The wear behaviors were evaluated using a ball-on-disc rotating wear test. The results showed that the alumina nanoparticles tended to gather in cracks and pores leading to increased film density and lower corrosion rates. The wear rates of films were decreased by adding nanoparticles.
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