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The cell dimensions for a series of β-Ca_2SiO_4 solid solutions were determined as a function of concentration of foreign oxides (Na_2O, Al_2O_3 and Fe_2O_3). The angle β varied most sensitively with the Na/(Na+Ca) ratio (=x) according to β(°)=94.55-8.86x(0?x?0.03). The decrease in x that accompanies the remelting reaction was therefore detectable by the increase in β. When the crystals were cooled at a constant rate γ(℃/s) over the temperature range in which the remelting reaction occurred, the fraction remelted was expressed by 1-exp(-1.33 γ^<-0.25>).
Kinetics of Remelting Reaction in Ca_2SiO_4 Solid Solutions
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