AUTHORS: B.K. Rakhadilov, D.N. Kakimzhanov, G. Botabaeva, D.B. Buitkenov, N. Kantai, L.B. Bayatanova
PAGES: 319 - 326
The article studied the effect of annealing on the structure and properties of zirconium dioxide coatings obtained by detonation spraying. Detonation spraying was realized on a computerized detonation spraying complex of the new generation CCDS2000. Determined that coatings made of zirconium dioxide are characterized by high adhesive strength of adherence to the substrate. Thermal annealing of coated samples was performed at temperatures of 900-1200◦ C. It was determined that the microhardness of zirconium dioxide coatings increases by 10-25% depending on the annealing temperature after annealing. The results of nanoindentation showed that the nanohardness of the coatings after annealing at 1000◦ C increases by 50%. It was determined that after annealing at 1000◦ C, the elastic modulus of the coatings increases, which indicates a decrease in plasticity and an increase in the strength of the coatings. X-ray diffraction analysis showed that the phase composition of coatings before and after annealing consists
of t-ZrO2. After annealing occurs there is an increase in the degree of t-ZrO2 tetragonality. Electron microscopic analysis showed that an increase in the number and size of micro-continuity in the form of thin layers after annealing. Determined that increase the hardness of zirconium dioxide after annealing at 900-1200◦ C is associated with a higher degree of tetragonality t-ZrO2 phase.
zirconium dioxide, coating, detonation spraying, hardness, annealing, microstructure, phase, indentation.
 A. Sivkov et al., Surface and Coatings Technology 292 (2016) 63-71.
 Wang Qun et al., International Journal of Refractory Metals and Hard Materials 81 (2019) 242-252.
 D.K. Yeskermessov et al., Phisics 88 (2017) 8-17.
 J. Jayaraj et al., Corrosion Science 48 (2006) 950-964.
 D.L. Alontseva et al., Phisics 71 (2013) 4-11. (in Russian)
 Niu Shaopeng et al., Surface and Coatings Technology 307(A) (2016) 963-970.
 M.M. Student et al., Materials Science 54 (2018) 22-29.
 E. Kadyrov et al., J. Therm. Spray Technol. 3 (1995) 280-286.
 X.M. Song et al., Surf. Coat. Tech. 270 (2015) 132-138.
 Z.J. Fan et al., Surf. Coat. Tech. 277 (2015) 188-196.
 V.Y. Ulianitsky et al., Advanced powder Technolog 29 (2018) 1859-1864.
 M.M. Mikhailov et al., Surface & Coatings Technology 319 (2017) 70-75.
 V.Y. Ulianitsky et al., Materials Letters 181 (2016) 127-131.
 D.V. Dudina et al., Ceramics International 42 (2016) 690-696.
 B.K. Rakhadilov et al., Key Engineering Materials 821 (2019) 301-306.
 V.Y. Ulianitsky et al., Metals 12 (2019) 1244.
 I.S. Batraev et al., Materials Today: Proceedings 4 (2017) 11346-11350.
 D. Buitkenov et al., Eurasian Journal of Physics and Functional Materials 4(1) (2020) 86-92.
 D.V. Shtanskiy et al., Fizika tverdogo tela 48(7) (2006) 1231-1238. (in Russian)
 W.D. Nix et al., Thin Solid Films 515 (2007) 3152-3157.
 Zhang Jia-Ping et al., Surface & Coatings Technology 285 (2016) 24-30.
 G.Ia. Akimov et al., Fizika tverdogo tela – Solid state physics 11 (2005) 1978-1980. (in Russian)