Thermochimica Acta, Vol.256, No.2, 367-373, 1995
Stages of the Synthesis of Gallium Nitride with the Use of Urea
Experimental studies have enabled the suggestion of a scheme of the reaction stages of gallium with urea in the temperature range 20-1000 degrees C. During studies on the formation of boron nitride with the use of urea and products of its thermal condensation, we have discovered that cyanamide (H2CN2) plays a substantial role in those processes [Z. Gontarz and S. Podsiadlo, Pol. J. Chem, 58 (1984) 3; A. Gorski and S. Podsiadlo, Poi. J. Chem., 58 (1984) 13]. As shown in these works cyanamide, formed in the course of the thermal decomposition of urea, is the main nitriding agent in the reactions. We have decided to investigate the processes of the reactions of urea with gallium to form gallium nitride.