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HA/ZnO coatings with varying content of ZnO were fabricated on Ti-6Al-4V substrate to enhance its bioactivity and antibacterial ability. The main phases are identified as CaTiO 3 , Ca 3 (PO 4 ) 2 , ZnTiO 3 and CaO. The coatings with higher ZnO content presented smaller grain size, resulting in a higher surface free energy and better wettability. Consequently, the mineralization of the ZnO/HA coatings, especially for the higher ZnO content samples were improved, indicating better enhanced indoi:10.1590/1980-5373-mr-2018-0744 fatcat:ym7v6x3akfh6thgwor6hk7kdty