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. 2021 Nov 25;12(12):1447.
doi: 10.3390/mi12121447.

Biomimetic Deposition of Hydroxyapatite Layer on Titanium Alloys

Madalina Simona Baltatu  1 , Andrei Victor Sandu  1   2 , Marcin Nabialek  3 , Petrica Vizureanu  1 , Gabriela Ciobanu  4
Affiliations

Biomimetic Deposition of Hydroxyapatite Layer on Titanium Alloys

Madalina Simona Baltatu et al. Micromachines (Basel). .

Abstract

Over the last decade, researchers have been concerned with improving metallic biomaterials with proper and suitable properties for the human body. Ti-based alloys are widely used in the medical field for their good mechanical properties, corrosion resistance and biocompatibility. The TiMoZrTa system (TMZT) evidenced adequate mechanical properties, was closer to the human bone, and had a good biocompatibility. In order to highlight the osseointegration of the implants, a layer of hydroxyapatite (HA) was deposited using a biomimetic method, which simulates the natural growth of the bone. The coatings were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), micro indentation tests and contact angle. The data obtained show that the layer deposited on TiMoZrTa (TMZT) support is hydroxyapatite. Modifying the surface of titanium alloys represents a viable solution for increasing the osseointegration of materials used as implants. The studied coatings demonstrate a positive potential for use as dental and orthopedic implants.

Keywords: TiMoZrTa system; biomaterials; biomimetic deposition; titanium alloys.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Microscopy images of substrate materials: (a) Ti15Mo7Zr5Ta; (b) Ti15Mo7Zr10Ta; (c) Ti15Mo7Zr15Ta.
Figure 2
Figure 2
Structural aspects of the surface of coated samples at 500×: (a) S1-HA; (b) S2-HA; (c) S3-HA; and 1000×: (d) S1-HA; (e) S2-HA; (f) S3-HA.
Figure 3
Figure 3
EDS elemental mapping of the metallic surface: (a) S1-HA; (b) S2-HA; (c) S3-HA.
Figure 4
Figure 4
Representative aspects layer of HA on titanium alloys.
Figure 5
Figure 5
X-ray diffraction (XRD) graph of the coated alloys.
Figure 6
Figure 6
Micro-indentation graphic: (a) S1-HA, (b) S2-HA, (c) S3-HA.
Figure 7
Figure 7
Images of the water drop on the surface of the alloys: (a) S1-HA, (b) S2-HA, (c) S3-HA.
See this image and copyright information in PMC

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