The physicochemical and electrophysical properties of ceramics based on BeO without impregnation and after impregnation with an aqueous solution of sodium carbonate Na2CO3 are studied. It is established that impregnation leads to preparation of ceramic specimens with a white color, which develop increased porosity, lower amount of impurities and smaller average microcrystal size, although it has little effect on their electrophysical properties. In order to improve these properties considerably it is necessary to increase ceramic density by increasing its sintering temperature by 20 – 40 K. Values of electrical permittivity δ and dielectric loss tangent tg δ are determined for a series of BeO ceramic specimens (732 pieces), having identical geometric dimensions, but prepared from original BeO powder of different batches. Studies show considerable scatter in the distribution of these parameters, which points to a requirement for further improvement of BeO-ceramic preparation technology.
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References
V. S. Kiiko, Yu. N. Makurin, and A. R. Ivanovskii, Ceramics Based on Beryllium Oxide: Preparation, Physicochemical Properties and Applications [in Russian], URO RAN, Ekaterinburg (2006).
V. S. Kiiko, I, A. Dmitriev, and I. D. Kashcheev, “Cause of the coloration of beryllium ceramics,” Inorganic Materials, 27, 16441646 (1991).
V. S. Kiiko, I. I. Piratinskaya, and Y. A. Vereshchagin, “Effect of iron impurities on the color of beryllium ceramics,” Inorganic Materials, 28, No. 8, 143501440 (1992).
V. S. Kiiko, “Transparent beryllia ceramics for laser technology and ionizing radiation dosimetry,” Refractories and Industrial Ceramics, 45, No. 4, 266 – 272 (2004).
V. A. Shabashov, V. S. Kiiko, I. A. Dmitriev, et al., “The state of iron impurities in a beryllium ceramic as determined from NGRS data,” Ceramics Internat., 30, No. 1, 1 – 7 (2004).
V. S. Kiiko,, Yu. N. Makurin, and A. L. Ivanovskii, “Features of impurity states of lithium and sodium in beryllium oxide ceramics,” Ogneupory Tekhn. Keram., No. 12, 23 – 28 (2005).
V. S. Kiiko, V. Ya. Vaispapir,M. A. Gorbunova, et al., “Effect of iron phase impurities on the color and electrophysical properties of beryllium ceramics,” Ogneupory Tekhn. Keram., No. 9, 8 – 12 (2006).
V. S. Kiiko, M. A. Gorbunova, Yu. N. Makurin, et al., “Microstructure and electrical conductivity of composite (BeO + TiO2)-ceramic,” Refractories and Industrial Ceramics, 48, No. 4, 429 – 434 (2004).
V. S. Kiiko, S. N. Shabunin, and Yu. N. Makurin, “Preparation, physicochemical properties and transmission of UHF radiation by ceramic based on BeO,” Ogneupory Tekhn. Keram., No. 10, 8 – 17 (2004).
V. S. Kiiko, “Effect of titanium oxide addition on physicochemical and luminescence properties of beryllia ceramics,” Neorgan. Materialy, 30, No. 5, 688 – 693 (1994).
G. P. Akishin, S. K. Turnaev, V. Ya. Vaispapir, et al., “Thermal conductivity of beryllium oxide ceramics,” Refractories and Industrial Ceramics, 50, No. 6, 465 – 468 (2009).
V. S. Kiiko, I. R. Shein, N. A. Zhelonkin, et al., “Thermal conductivity and ultrasound propagation rate in ceramics based on beryllium oxide,” Ogneupory Tekhn. Keram.,No. 4 – 5, 45 – 48 (2010).
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Translated from Novye Ogneupory, No. 10, pp. 42 – 47, October 2010.
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Akishin, G.P., Turnaev, S.K., Vaispapir, V.Y. et al. Composition of beryllium oxide ceramics. Refract Ind Ceram 51, 377–381 (2011). https://doi.org/10.1007/s11148-011-9329-6
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DOI: https://doi.org/10.1007/s11148-011-9329-6