Electrolytic deposition of fluorine-doped hydroxyapatite/ZrO2 films on titanium for biomedical applications
Source abstract
Abstract
Abstract A novel method of electrolytic fluorine-doped hydroxyapatite/ZrO 2 double-layer coating was conducted on medical titanium in ZrO(NO 3 ) 2 aqueous solution and subsequently in the mixed solution of Ca(NO 3 ) 2 , NH 4 H 2 PO 4 and NaF. The microstructure, phase composition, bond strength, dissolution rate and corrosion resistance of the films were studied. Results revealed that the additions of F − reduced the crystallite and increased the crystallinity of hydroxyapatite, structure of apatite was changed from micro-petal-like crystals to nano-needle-like crystals, which aligned vertically to the substrate. The approximately 10 μm thick layers was much denser and uniform. Addition of ZrO 2 buffer layer could improve the bond strength between the fluorine-doped hydroxyapatite layer and the substrate. The bond strength of the double-layer coating was found to be significantly higher than that of pure hydroxyapatite coating even after soaking in normal saline for two weeks. In physiological solution, the double-layer coating showed lower dissolution rate and stronger corrosion resistance than pure hydroxyapatite coating.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Bone Tissue Engineering Materials · Titanium Alloys Microstructure and Properties · Magnesium Alloys: Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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