Synthesis of TiOx-based ceramics by plasma spraying
A.Kh. Abduev1*, A.K. Akhmedov1, A.Sh. Asvarov1,2, K.Sh. Rabadanov2, R.M. Emirov3, S.P. Vashchenko4, I.P. Gulyaev4, V.I. Kuzmin4**, and D.V. Sergachev4
1Amirkhanov Institute of Physics, Dagestan Scientific Center RAS,
Makhachkala, Russia
2Dagestan Scientific Center RAS, Analytical Center for Collective Use,
Makhachkala, Russia
3Dagestan State University, Makhachkala, Russia
4Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
E-mail: a_abduev@mail.ru*; vikuzmin57@mail.ru**
Keywords: titanium oxide, rutile, plasma spraying, microstructure
Pages: 621–627
Abstract
Structure of ceramics obtained by the plasma spray deposition of spherical TiO2
powders has been investigated. An electron microscopy study of the surfaces and cross sections of particles in the initial powder and of the deposited ceramic coatings was performed. X-ray diffraction and Raman scattering data proved that the coatings were mainly structured as rutile. In addition, Raman and X-ray diffraction data have revealed an amorphous phase, an anatase phase, and non-stoichiometric phases Ti8O15, Ti10O19, Ti7O13, etc.
being present in the coatings. The observed suppression of (011) and (111) XRD peaks and an
increased intensity of (110) peak are indicative of a predominant orientation
of grains in the synthesized ceramics. Mechanisms of formation of the complex
coating structure are discussed.
DOI: 10.1134/S086986431704014X
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