中空颗粒进入熔液的参数分析

Parameters Analysis of Hollow Particles Entering Melt

通过建立中空颗粒进入熔液的热力学和动力学模型,分析了中空颗粒进入熔液的润湿角、临界尺寸等参数。研究表明,中空颗粒不需外力,自发进入熔液的临界尺寸R与ρ_s、ρ_1、θ有关,当颗粒半径大于临界尺寸,颗粒能自发进入熔液中。当ρ_s、ρ_1一定时,随着润湿角的增加,自发进入熔液临界尺寸R也增加;当ρ_s、ρ_1、θ一定时,所需的外力与R有关,颗粒临界半径越小,颗粒进入熔液中所需的外力越小。

The thermodynamics and kinetics models of the hollow particles entering melt were set up, and the wetting angle, critical size and other parameters of the hollow particles entering melt were analyzed.The research shows that the critical size R of spontaneously entering into melt is related to ρs, ρ1, θ. When the particle radius is bigger than the critical size, the particles can enter into melt spontaneously. When ρs, ρ1 are certain, the critical size R of particles spontaneously entering into melt increases with the increase of wetting angle. When ρs, p1, θ are certain, the external force is associated with the critical size R of particles. The smaller the critical size of the particles is, the smaller the force required to enter melt is.