Study in Stability of Dispersion Melts at a High Temperature.

观察了液相线与结晶温度呈双节点曲线的二元GeO_2体系的成核-生长型相分离现象，并从粗化过程中的连接和聚并两方面探讨了该型相分离的生长机理。此外，还观察了二元B_2O_3体系的液液分离，并从熔体的性质上讨论了相分离的状态。在二元GeO_2体系中，成核生长型相分离粒子的增长与连接和聚并粒子的数量成正比。相分离颗粒的表面张力和分散介质的表面张力会增加相分离颗粒的体积分数，并增加相分离颗粒的内聚力。二元B_2O_3体系的液液相分离过程是通过粒子的连接、聚并和粒子的运动进行的。用相分离系数表示相分离状态。相分离系数受分散颗粒体积分数、熔体黏结力、熔体密度和粘度等因素的控制。

The nucleation-growth type phase separation in binary GeO_2 systems which had a binodal curve between liquidus and crystallization temperatures was observed, and growth mechanism of this type phase separation was discussed in terms of connection and coalescence on coarsening process. moreover, the liquid-liquid phase separation in binary B_2O_3 systems was observed, and the states of phase separation were discussed in terms of properties of melts.The particles of nucleation-growth type phase separation in binary GeO_2 system grew in proportion to the number of connected and coalesced particles. And the number of connected and coalesced particles was increased with volume fraction of particles and cohesion force with surface tensions of phase separated particles and dispersion medium.The process of liquid-liquid phase separation in binary B_2O_3 systems progressed by connect and coalescence of particles and by movement of particles. The states of phase separation were appreciated by phase separation coefficent. The phase separation coefficient was controled by volume fraction of dispersed particles, cohesion force, density and viscosity of melts.