Calcium phosphate coating improving the bioactive properties of superelastic NiTi implants | Tekhnologii bezopasnosti zhiznedeyatelnosti – Life Safety/Security Technologies. 2023. № 4. DOI: 10.17223/7783494/4/7

Calcium phosphate coating improving the bioactive properties of superelastic NiTi implants

The calcium phosphate coatings have proven themselves as potential component of the implants but there are no any works dedicated to this coating applied on NiTi substrate by plasma-assisted RF sputtering. In this article plasma-assisted RF sputtering was used to obtain calcium phosphate coating on NiTi substrate. It was determined that sputtered layer consists of the hydroxyapatite with monoclinic crystal structure and P-tricalcium phosphate and substrate contains NiTi B2-austenite and Ti₂Ni. EDS analysis shows the coating contain only calcium, phosphorus and oxygen which are the main parts of the hydroxyapatite and P-tricalcium phosphate. Load-unload bending test demonstrate that the sample with ~ 30 gm layer is deformed up to 4% at 1100 MPa without significant residual stress. Wettability and in vitro tests prove that obtained calcium phosphate coating improves the cell proliferation. The authors declare no conflicts of interests.

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Keywords

titanium nickelide, hydroxyapatite, coating, sputtering, biocompatibility

Authors

Name	Organization	E-mail
Marchenko Ekaterina S.	Tomsk State University	89138641814@mail.ru
Baigonakova Gulsharat A.	Tomsk State University	gat27@mail.ru
Dubovikov Kirill M.	Tomsk State University	kirill_dubovikov@mail.com
Topolnitskiy Evgeniy B.	Siberian State Medical University	e_topolnitskiy@mail.ru

Всего: 4

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