RF magnetron-sputtered coatings deposited from biphasic calcium phosphate targets for biomedical implant applications

Autor: K.A. Prosolov, K.S. Popova, O.A. Belyavskaya, J.V. Rau, K.A. Gross, A. Ubelis, Yu.P. Sharkeev
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Bioactive Materials, Vol 2, Iss 3, Pp 170-176 (2017)
Druh dokumentu: article
ISSN: 2452-199X
DOI: 10.1016/j.bioactmat.2017.07.003
Popis: Bioactive calcium phosphate coatings were deposited by radio-frequency magnetron sputtering from biphasic targets of hydroxyapatite and tricalcium phosphate, sintered at different mass % ratios. According to Raman scattering and X-ray diffraction data, the deposited hydroxyapatite coatings have a disordered structure. High-temperature treatment of the coatings in air leads to a transformation of the quasi-amorphous structure into a crystalline one. A correlation has been observed between the increase in the Ca content in the coatings and a subsequent decrease in Ca in the biphasic targets after a series of deposition processes. It was proposed that the addition of tricalcium phosphate to the targets would led to a finer coating's surface topography with the average size of 78 nm for the structural elements.
Databáze: Directory of Open Access Journals