Abstract
On the basis of experimental data, we calculate the diffusion coefficients of titanium and oxygen through rutile, which is synthesized in the process of oxidative construction of thin-wall ceramics (OCTWC), and titanium through a K-layer (a solid solution of oxygen in the metal). It is shown that, at the beginning of the exponential stage, the process rate is determined by the rate of titanium diffusion through the K-layer. Near the bifurcation point, the diffusion conductivities of the OCTWC rutile and K-layer become equal, which leads to a stepwise variation in the process rate.
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Solntsev, K.A., Chernyavskii, A.S., Shustorovich, E.M., et al., Kinetics of Rutile Formation via Oxidation of Titanium in Air at 850°C, Neorg. Mater., 2004, vol. 40, no. 8, pp. 950–954 [Inorg. Mater. (Engl. Transl.), vol. 40, issue 8, p. 829].
Solntsev, K.A., Zufman, V.Yu., Alad’ev, N.A., et al., Titanium-to-Rutile Oxidation Kinetics in the Direct-Oxidation Fabrication of Thin-Wall Ceramics, Neorg. Mater., 2008, vol. 44, no. 8, pp. 969–975 [Inorg. Mater. (Engl. Transl.), vol. 44, issue 8, p. 856].
Fizicheskaya entsiklopediya (Physical Encyclopedia), Moscow: Sov. Entsiklopediya, 1988, vol. 1, p. 209.
Solntsev, K.A., Shashkeev, K.A., and Stetsovskii, A.P., Titanium Oxidation at the Exponential Stage of Oxidative Construction of Thin-Walled Ceramics, Dokl. Akad. Nauk: Fiz. Khim., 2008, vol. 422, no. 5, pp. 267–270 [Dokl. Phys. Chem. (Engl. Transl.), vol. 422, issue 2, p. 267].
Solntsev, K.A., Shashkeev, K.A., and Stetsovskii, A.P., Titanium Oxidation at the Exponential Stage of Oxidative Constructing of Thin-Walled Ceramics, Dokl. Phys. Chem., 2008, vol. 422, Part 2, pp. 267–270.
Shevtsov, S.I., Shvorneva, L.I., Stetsovskii, A.P., and Solntsev, K.A., Composition and Structure of Titanium Dioxide Obtained by the Method of Oxidative Construction of Thin-Wall Ceramics (OCTWC), Trudy VII mezhdunarodnoi nauchnoi konferentsii “Khimiya tverdogo tela i sovremennye mikroi nanotekhnologii (Proc. VII Int. Sci. Conf. “Chemistry of Solids and Current Micro- and Nanotechnologies”), Kislovodsk: Severo-Kavkazskii Gos. Univ., 2007, pp. 467–469.
Shevtsov, S.V., Phase Composition and Some Physical Properties of Titanium Oxide Obtained by Application of Oxidative Construction of Thin-Wall Ceramics, Perspekt. Mater., 2008, special issue 5 (November), pp. 380–382.
Zufman, V.Yu., Stetsovskii, A.P., and Solntsev, K.A., The Kinetics and Mechanism of Obtaining of Rutile by Oxidative Construction of Thin-Wall Ceramics on Solid Titanium Samples, Materialy mezhdunarodnoi konferentsii “Novye perspektivnye materialy i tekhnologii ikh polucheniya (NPM-2007)” (Proc. Int. Conf. “New Promising Materials and Technologies of Their Obtaining (NPM-2007)”), Volgograd, 2007, p. 154.
Spravochnik khimika (Handbook for Chemists), Moscow-Leningrad: Khimiya, 1964, vol. 3, pp. 927–933.
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Original Russian Text © K.A. Solntsev, S.V. Shevtsov, A.P. Stetsovskii, K.A. Shashkeev, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 2, pp. 217–222.
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Solntsev, K.A., Shevtsov, S.V., Stetsovskii, A.P. et al. The phenomenon of bifurcation in the processes of oxidative construction of thin-wall ceramics under heating of solid titanium preforms. Inorg Mater 46, 177–182 (2010). https://doi.org/10.1134/S0020168510020160
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DOI: https://doi.org/10.1134/S0020168510020160