Electrodeposition of F-doped hydroxyapatite-TiO2 coating on AZ31 magnesium alloy for enhancing corrosion protection and biocompatibility

Yuanyong Ouyang, Zihao Zhang, Wei Huang, Wenzhong Yang, Chuanlai Shen, Yun Chen, Xiaoshuang Yin, Ying Liu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Fluorinated hydroxyapatite-titanium dioxide coating (F-doped HA-TiO2) was deposited in situ onto AZ31 Mg alloy using electrodeposition method. XRD and EDS confirmed the crystal structure and composition of the coating. SEM images showed that the F-doped HA-TiO2 coating on the surface of AZ31 Mg alloy was extremely uniform and the thickness of coating was reflected by the cross-sectional image. Corrosion behavior of the coating modified Mg alloy was tested by electrochemical and immersion experiments. Compared to the corrosion current density (Icorr) of the uncoated AZ31 Mg alloy in Hank’s solution, the Icorr of F-doped HA-TiO2 coating was decreased almost 4 orders. The coated AZ31 Mg alloy showed superior biocompatibility, which was strongly demonstrated by the amounts of cells increased in cell culture. The results of hemolysis tests also illustrated that the F-doped HA-TiO2 coating met the requirements of biomedical materials.

Original languageEnglish
Pages (from-to)17188-17202
Number of pages15
JournalJournal of Materials Science
Volume57
Issue number36
DOIs
StatePublished - Sep 2022

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