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Crystallization Of Homogeneous Solid Solutions

IP.com Disclosure Number: IPCOM000067948D
Original Publication Date: 1979-Oct-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Scheel, HJ [+details]

Abstract

Growth of homogeneous mixed crystals demands very accurate temperature control so that any composition changes are within tolerable limits. For instance, a typical two-component phase diagram shows a significant separation of the solidus and the liquidus curves. Thus the composition of solid material freezing out is less rich in one of the components than the remainder of the liquid solution or melt at the same temperature. In a closed crucible (for volatile solvents) with a fixed volume of melt, therefore, the crystallizing material continuously changes its composition.