4.7 Article

Enhanced corrosion resistance of hydroxyapatite/magnesium-phosphate-composite-coated AZ31 alloy co-deposited by electrodeposition method

Journal

CERAMICS INTERNATIONAL
Volume 42, Issue 11, Pages 13074-13085

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.05.090

Keywords

HAMP; DCPD-MHP; Corrosion resistance; Corrosion behaviour; Electrodeposite

Funding

  1. Petrochemical Wastewater as Resources and Industrialization of Zero-discharge Key Technology in Key Watersheds [2013ZX07210001]
  2. Scientific Innovation Research of College Graduate in Jiangsu Province [SJLX_0341]

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Magnesium-phosphate-doped hydroxyapatite (HAMP, Mg-3(PO4)(2)-Ca-10(PO4)(6)(OH)(2)) and magnesium-hydrogen-phosphate-doped dicalcium-phosphate-dehydrate (DCPD-MHP, MgHPO4-CaHPO4) composite coatings were successfully electrodeposited onto an AZ31 alloy, and their corrosion behaviour was evaluated via electrochemical and in vitro degradation tests. In addition, the stability of the coatings was evaluated via these electrochemical tests. The results showed that the corrosion resistance and stability of the composite coatings were both significantly higher than those of single coatings; this greater resistance and stability resulted from the denser and more uniform structures of the composite coatings. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

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