2-DIMENSIONAL GRAIN-GROWTH IN RAPIDLY SOLIDIFIED SUCCINONITRILE FILMS

The kinetics and topological mechanisms of normal grain growth have be en examined through in situ dynamic studies on rapidly solidified succ inonitrile (SCN). The in situ studies allowed for continuous monitorin g of the evolution of individual grains during growth. We have assesse d the Mullins-Von Neumann topological grain growth law and the Burke-T urnbull parabolic rate law and have determined rate constants that des cribe grain growth. This work demonstrates that both laws are both obe yed globally and consistently. These in situ studies permit one to fol low the unit operations associated with grain growth kinetics. This ar ticle demonstrates the usefulness of succinonitrile as a model analog system for studying grain growth.