Liquid-Solid Systems

Abstract

When considering the transition from liquid to solid for binary systems the effects of pressure can generally be ignored. It has already been stated that while changes in pressure do affect the melting point of a substance the effect is of a very small order. Consequently, the t—c type of diagram is the only type of phase diagram normally considered for liquid—solid systems. Because the effect of pressure is negligible we may consider the system as a condensed system and use a reduced version of the Phase Rule. The reduced Phase Rule may be written P + F = C + 1