Effect of crystallinity on MgO-C reaction

Abstract

The activity on the Mg-C reaction of amorphous carbon black particles, crashed single crystalline graphite and graphitized carbon black particles have been evaluated in a transmission electron microscope by means of in-situ high temperature heating experiments. Active Mg-C reaction on a MgO single crystal with amorphous carbon and crashed graphite has been observed at around 1500ºC. However, apparent reaction has not been observed with graphitized carbon black particles up to the temperature at which MgO shows sublimation. Low activity of graphite c-plane on MgO-C reaction has been suggested.