Formation of photocatalytic plasma electrolytic oxidation coatings on magnesium alloy by incorporation of TiO2 particles

resumo

Photocatalytically active plasma electrolytic oxidation coatings on AM50 Mg alloy are reported in the present work. The photocatalytic activity was achieved via introduction of anatase (TiO2 particles) to the treatment bath. The photocatalytic performance of the coating was evaluated by measuring the degradation rate of aqueous methylene blue solution and was primarily related to the anatase content on the coating surface. Lower treatment voltage and a higher amount of particles in the electrolyte can be used to incorporate more anatase into the layer and generate superior photocatalytic coatings. The tailored and functionalized surface provides new functionality for magnesium alloys. (C) 2016 Elsevier B.V. All rights reserved.

palavras-chave

MICROARC OXIDATION; PEO COATINGS; TITANIA; ANATASE; RUTILE; TRANSFORMATION; FILMS

categoria

Materials Science; Physics

autores

Lu, XP; Schieda, M; Blawert, C; Kainer, KU; Zheludkevich, ML

nossos autores

Grupos

agradecimentos

The technical support of Mr. Volker Heitmann and Mr. Ulrich Burmester during this work is gratefully acknowledged. X. Lu thanks China Scholarship Council (201207090010) for the award of fellowship and funding.

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