The activity of copper in cuprous selenide and various phases of the system copper-tellurium as a function of the metal-to-nonmetal ratio has been determined with the help of coulometric titrations. At 400°C the homogeneity range of cuprous selenide extends from a Cu/Se ratio of 1.9975±0.001 to a value lower than 1.86. Homogeneous phases of the system Cu–Te have been found between Cu/Te ratios equal to about 2 to 1.92, 1.43 to 1.39, and 1.32 to 1.30.
Verhalten von Festleiterketten Pt/Cr2O3/Cr2O3+FeO/Pt in Abhängigkeit von der Temperatur und dem Eisen(II)‐oxydgehalt. Berechnung der Überführungszahl von Cr3+‐Ionen in Ghrom(III)‐oxyd bei 1500°. Versuchseinrichtung zur Ermittlung des elektrischen Widerstandes und der Thermokraft. Messungen an Chrom(III)‐oxyd zwischen 900 und 1750° und bei verschiedenen Sauerstoffteildrücken. Einfluß von Fremdoxydzusätzen mit nieder‐ und höherwertigen Metallionen auf die elektrischen Eigenschaften. Deutung der Meßergebnisse.
Deposition from Thiosulfate Solutions" based on work done in partial fulfillment of the requirements for the Ph.D. degree in Chemical Engineering at the University of Minnesota.
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