Comparative Study of the Structure, Properties, and Corrosion Behavior of Sr-Containing Biocoatings on Mg0.8Ca

被引：16
作者：
Sedelnikova, Mariya B. [1 ]
Sharkeev, Yurii P. [1 ,2 ]
Tolkacheva, Tatiana V. [1 ]
Khimich, Margarita A. [1 ]
Bakina, Olga V. [1 ]
Fomenko, Alla N. [1 ]
Kazakbaeva, Aigerim A. [3 ]
Fadeeva, Inna V. [4 ]
Egorkin, Vladimir S. [5 ]
Gnedenkov, Sergey V. [5 ]
Schmidt, Juergen [6 ]
Loza, Kateryna [7 ,8 ]
Prymak, Oleg [7 ,8 ]
Epple, Matthias [7 ,8 ]
机构：
[1] RAS, SB, Inst Strength Phys & Mat Sci, Lab Phys Nanostruct Biocomposites, Tomsk 634055, Russia
[2] Natl Res Tomsk Polytech Univ, Res Sch High Energy Phys, Tomsk 634050, Russia
[3] Natl Res Tomsk State Univ, Fac Phys & Engn, Tomsk 634050, Russia
[4] RAS, Inst Met & Mat Sci AA Baikov, Moscow 119334, Russia
[5] RAS, FEB, Inst Chem, Vladivostok 690022, Russia
[6] Innovent Technol Dev, Dept Electrochem, D-07745 Jena, Germany
[7] Univ Duisburg Essen, Inorgan Chem, D-45117 Essen, Germany
[8] Univ Duisburg Essen, Ctr Nanointegrat Duisburg Essen CeNIDE, D-45117 Essen, Germany
来源：
MATERIALS | 2020年 / 13卷 / 08期
关键词：
Sr-tricalcium phosphate; Sr-hydroxyapatite; magnesium alloy; micro-arc oxidation; biocoatings; structure; corrosion resistance; cell viability; CALCIUM-PHOSPHATE COATINGS; PLASMA ELECTROLYTIC OXIDATION; MAGNESIUM ALLOY; HYDROXYAPATITE COATINGS; SOL-GEL; TITANIUM; MICROSTRUCTURE; SURFACE; BIOMATERIALS; FABRICATION;
D O I：
10.3390/ma13081942
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A comparative analysis of the structure, properties and the corrosion behavior of the micro-arc coatings based on Sr-substituted hydroxyapatite (Sr-HA) and Sr-substituted tricalcium phosphate (Sr-TCP) deposited on Mg0.8Ca alloy substrates was performed. The current density during the formation of the Sr-HA coatings was higher than that for the Sr-TCP coatings. As a result, the Sr-HA coatings were thicker and had a greater surface roughness R-a than the Sr-TCP coatings. In addition, pore sizes of the Sr-HA were almost two times larger. The ratio (Ca + Sr + Mg)/P were equal 1.64 and 1.47 for Sr-HA and Sr-TCP coatings, respectively. Thus, it can be assumed that the composition of Sr-HA and Sr-TCP coatings was predominantly presented by (Sr,Mg)-substituted hydroxyapatite and (Sr,Mg)-substituted tricalcium phosphate. However, the average content of Sr was approximately the same for both types of the coatings and was equal to 1.8 at.%. The Sr-HA coatings were less soluble and had higher corrosion resistance than the Sr-TCP coatings. Cytotoxic tests in vitro demonstrated a higher cell viability after cultivation with extracts of the Sr-HA coatings.
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页数：21
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