ABSTRACT
The behavior of insoluble particles at the solid-liquid interface of an advancing solidification front is a multifaceted phenomenon. Consider a channel containing an insoluble particle in a liquid. The channel is cooled at one end to a temperature below the melting point of the liquid. As schematically illustrated in Figure 12.1, the liquid at the cooling end will freeze and a solidification front will advance along the temperature gradient; that is, moving from the cold right end to the warm left end in the case of Figure 12.1. The rate of the advancing solidification front depends on the heat extraction from the cooling end for a given liquid-solid system. When the solidification front approaches the foreign particle (Figure 12.1a), one of three phenomena
12.1 Introduction ................................................................................................ 633 12.2 Review of Theoretical Models .................................................................... 635
12.2.1 Critical Velocity for Particle Engulfment ..................................... 635 12.2.2 Available Theoretical Models ....................................................... 637
12.3 Experimental ..............................................................................................644 12.3.1 Experimental Setup .......................................................................644 12.3.2 Matrix Materials ...........................................................................645 12.3.3 Experiments ..................................................................................646
