Effect of nonstoichiometry and amount of additives on the structure of HAp-TiOy mixtures produced by high-energy fragmentation
https://doi.org/10.17586/2220-8054-2018-9-4-549-557
Abstract
The nanoparticle sizes in hydroxyapatite (HAp), titanium monoxide (TiOy) and HAp-TiOy mixtures (y = 0.92; 1.23) have been studied by XRD and HRTEM techniques as a function of milling time. It was established that the high-energy milling does not lead to a considerable decrease in the particle size and to a variation in the HAp crystal lattice parameters, but it promotes 4-fold reduction of microstrains. It was shown that the dependence of the average size of crystal and structural parameters on the milling time for the HAp-TiOy mixtures is similar to that of initial HAp. The coherent scattering region of HAp does not depend on stoichiometry and TiOy content in the mixture and is ∼ 15 ± 5 nm after milling for 480 min.
Keywords
titanium monoxide,
hydroxyapatite,
milling,
mixtures,
crystal structure,
microstructure,
phase composition
Supporting agencies: The work was carried out at the Institute of Solid State Chemistry UB RAS with financial support from the Russian Science Foundation (Project 14-23-00025). The authors are grateful to E. A. Bogdanova for the synthesis of HAp powders and E. Yu. Gerasimov for HRTEM experiment.
About the Authors
S. V. Rempel
Institute of Solid State Chemistry UB RAS; Ural Federal University named after the first President of Russia B. N. Eltsin
Russian Federation
Russian Federation
91, Pervomaiskaya st., 620990, Ekaterinburg
19, Mira st., 620002, Ekaterinburg
K. A. Sergeeva
Far-Eastern Federal University
Russian Federation
Russian Federation
8, Sukhanova st., 690090, Vladivostok
H. Schroettner
Institute for Electron Microscopy and Nanoanalysis, Graz University of Technology
Austria
Austria
Steyrergasse 17/III, A-8010 Graz
А. А. Valeeva
Institute of Solid State Chemistry UB RAS; Ural Federal University named after the first President of Russia B. N. Eltsin
Russian Federation
Russian Federation
91, Pervomaiskaya st., 620990, Ekaterinburg
19, Mira st., 620002, Ekaterinburg
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Review
For citations:
Rempel S.V., Sergeeva K.A., Schroettner H., Valeeva А.А. Effect of nonstoichiometry and amount of additives on the structure of HAp-TiOy mixtures produced by high-energy fragmentation. Nanosystems: Physics, Chemistry, Mathematics. 2018;9(4):549-557. https://doi.org/10.17586/2220-8054-2018-9-4-549-557
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