STUDY OF SOLID-STATE REACTIONS IN NIO/FE2O3 SYSTEM

Solid-state reactions in the NiO/Fe2O3 system have been investigated in the temperature range 1100 to 1300° C, The optical microscope and the electron probe microanalyser were used. Kinetic parameters of the calcination process of this system: the reaction rate, time exponent and activation energy, have been determined by observing the changes in the reaction layer thickness with time and temperature. The analysis of the reaction layer composition was the basis for discussion concerning the possible mechanism of this reaction. © 1969 Chapman and Hall.