Thermal conductivity of beryllium oxide ceramic
- 365 Downloads
Prospects are discussed for the use of BeO-ceramic in electronic and other fields of technology and special instrument building. With use of BeO-ceramic in electronic technology one of the main parameters is its high thermal conductivity. Analysis of publications shows that BeO-ceramic in the range 300 – 500 K exhibits the highest thermal conductivity among all ceramic materials used in electronic technology. Results are provided for a study of the thermal conductivity of 170 ceramic specimens made from BeO-ceramic with an identical configuration and dimensions prepared from one batch of BeO starting powder. It is established that the average size of microcrystals and the density of specimens have a defining effect on thermal conductivity.
KeywordsBeO-ceramic thermal conductivity BeO powder average grain size density specimen porosity impurity phase physicochemical properties
Unable to display preview. Download preview PDF.
- 1.R. A. Belyaev, Beryllium Oxide, 2nd edition [in Russian], Atomizdat, Moscow (1980).Google Scholar
- 2.V. S. Kiiko, Yu. N. Makurin, and A. L. Ivanovskii, Ceramics Based on Beryllium Oxide: Preparation, Physicochemical Properties and Applications [in Russian], UrO RAN, Ekateringurg (2006).Google Scholar
- 3.E. Ryschkevitch, “Features of beryllia powder ceramics,” Metallurgy International, 1, No. 2, 49 – 52 (1969).Google Scholar
- 4.F. Buresch, “Berylliumoxid - thoriumoxid und zirkondioxid -keramiken,” Radex Rundschau, No. 1 / 2, 133 – 145 (1983).Google Scholar
- 5.V. S. Kiiko and M. G. Zuev, “Luminescence of Eu3+ and Tb3+ ions in transparent beryllium ceramic,” Neorgan Materialy, 31, No. 5, 709 – 712 (1995).Google Scholar
- 6.V. S. Kiiko and Yu. N. Makurin, “Stimulation of luminescence of transparent beryllium ceramic with RE-metal impurities,” Neorgan Materialy, 33, No. 8, 860 – 864 (1997).Google Scholar
- 7.V. S. Kortov, J. J. Milman, A. J. Slesarev, et al., “New BeO ceramics for TL-ESR dosimetry radiation protection dosimetry,” Nucl. Technol., 47, No. 1 / 4, 267 – 270 (1993).Google Scholar
- 8.V. S. Kiiko, V. Ya. Vaispapir, M. A. Gorbunova, et a., “Effect of iron impurity phases on the color and electrophysical popreties of beryllium ceramic,” Ogneupory Tekhn. Keram., No. 9, 8 – 12 (2006).Google Scholar
- 10.U. D. Kingery, Introduction to Ceramics [Russian translation], Izd. Lit. po Stroitel’stvu, Moscow (1964).Google Scholar
- 11.G. V. Samsonov and I. M. Vinnitskii, Refractory Compounds: Handbook [in Russian], Metallurgiya, Moscow (1979).Google Scholar
- 12.G. V. Samsonov (editor), Physicochemical Properties of Oxides: Handbook [in Russian], Metallurgiya, Moscow (1969).Google Scholar