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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN On-line: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2017024817
pages 191-201

THIN BIOACTIVE Zn-SUBSTITUTED HYDROXYAPATITE COATING DEPOSITED ON Ti SUBSTRATE BY RADIOFREQUENCY SPUTTERING

Konstantin A. Prosolov
National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia; Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, 2/4 Akademicheskii Ave., Tomsk, 634055, Russia
O. A. Belyavskaya
National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia
J. V. Rau
Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), 100 Via del Fosso del Cavaliere, 00133 Roma, Italy
Yu. P. Sharkeev
Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, 2/4 Akademicheskii Ave., Tomsk, 634055, Russia; National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk, 634050, Russia

RESUMO

In this study, Zn-substituted hydroxyapatite synthesized by mechanochemical activation was deposited on titanium substrates by a radiofrequency sputtering method. The microstructure, composition, and sputtering rate of the deposited films were examined. The coatings are formed by an amorphous and quasi-amorphous type of structure with good adhesion to the substrate. The elemental composition of the coatings is close to a stoichiometric hydroxyapatite one with a trace of Zn. It was discovered that it is possible to deposit a thin amorphous coating from a crystalline target by increasing the target-to-substrate distance and subsequently decreasing the substrate temperature. This provides a possibility of forming an antibacterial bioactive coating with a high level of bioresorbability which could be used for a rapid antibacterial effect. Also, amorphous calcium phosphate could be used as a component of a multilayer coating comprised of substituted hydroxyapatite in both amorphous and crystalline forms for improved implant stability.


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