Differential thermal analysis apparatus for fluxed melts in controlled atmospheres

Abstract
Apparatus is described for the determination by differential thermal analysis of the solubility curves and stability fields of refractory materials in molten solvents in controlled atmospheres. The thermocouples are enclosed by earthed platinum sheaths and the junctions are immersed just below the surface of the samples. The signal-to-noise ratio is superior to that obtained by conventional arrangements. Experiments have been performed in oxygen at pressures of several kilograms per square metre.