The technology of preparing green coating by conducting micro-arc oxidation on AZ91D magnesium alloy

• Autorzy: Wang S. , Liu P.

Identyfikatory

DOI

10.1515/pjct-2016-0068

• Języki publikacji: EN

Abstrakty

EN

Micro-arc oxidation was applied to AZ91D magnesium alloy by taking K₂Cr₂O₇  as the colouring salt in the silicate system. It was shown that the green coating obtained through performing micro-arc oxidation on magnesium alloy consisted of Mg, Mg₂SiO₄ , MgO, and Mg₂SiO₄  based on analysis of X-ray diffraction (XRD), and scanning electron microscopy (SEM). Among which, Mg₂SiO₄ was the colouring salt; there were something in the lamellar, pit, and convex forms found on the surface of the coating. The coating consisted of a porous, and a compact, layer from the outside to the inside. As demonstrated, the colour of the coating depended on the K₂Cr₂O₇ concentration: it became gradually deeper with the addition of K₂Cr₂O₇ and the increasing micro-arc oxidation time. The corrosion resistance and hardness of the green coating were greater than that of the matrix.

Słowa kluczowe

EN

magnesium alloy; micro-arc oxidation; coating

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2016
• Tom: Vol. 18, nr 4
• Strony: 36--40
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Wang S.

• Lanzhou University of Technology, State key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou 730050, China

autor

Liu P.

• Lanzhou University of Technology, Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou 730050, China

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).