V.I.Ezikov, D.V.Romanova
Received April 20, 1998, after revision November 28, 1998
Effect of UHF electromagnetic irradiation (1 GHz) on the
formation process of copper-calcium-phosphate glasses has been studied
using X-ray phase analysis, electron microscopy and EPR spectroscopy
within the temperature range 400-1200 oC. The UHF irradiation
initiates polymorphic transformations of calcium phosphates and favours
the destruction of copper ions associates thus causing the amorphization
of sintered products. Copper associates arising in the crystalline
phase define the phosphate matrix geometry in the melt in their vicinity
and thus the final glass structure.