By Yu S Kuz'minov, E E Lomonova, V V Osiko
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Akad. Nauk SSSR, 1980, 253, No. 2. 330– 334. , Melting wave of porous matter, Preprint of the Institute of Chemical Physics, RAS, Chernogolovka, 1982. 1. RADIOFREQUENCY GENERATORS. COLD CRUCIBLE At present, a series of radiofrequency (RF) equipment for induction melting of dielectric materials in the cold crucible of the Kristall400 type has been developed and is manufactured by industry [1– 4]. In these systems, equipment Kristall-401-Fianite, Kristall-403 and Kristall-405 differ in the power of the generator and the volume of the crucible and are designed for the melting of oxides and growing single crystals by directional solidification.
The rate of melting of this region is lower as a result of heat conductivity. When the melt enters again into contact with the charge rapid spreading takes place and a new solidifies region forms, and so on. Thus, a quasiperiodic melting process takes place. In the stationary regime above the threshold, the melt–charge boundary moves in a uniform manner. 9) Cubic Zirconia and Skull Melting Here λ, T m , T 0 and ε is the heat conductivity, melting point, initial temperature and initial porosity (prior to melting) of the solid substance, respectively; r p is the diameter of the pores, L is the heat of melting of the substance, C is the heat capacity of the melt (for both types of charge, the values of T p , T ο , L and C are identical).
Dokl. Akad. Nauk SSSR, 1980 253, No. 2, 330– 334. , Izv. LETI, 1981, No. 299, 14–20. , PTE, 1970, No. 5, 222–225. , Vestn. AN SSSR, 1973, No. 12, 29-39. , Current Topics in Material Sciences, Amsterdam, 1978, 421–480. , Usp. Khimii, 1978, 47, No. 3, 385– 427. A. (editor), Using high-frequency currents in electrothermal applications, Leningrad, Mashinostroenie, 1973. , J. Crystal Growth, 1982, 57, No. 1, 27–42. 23 Cubic Zirconia and Skull Melting 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. , Farr B.