载气环境对液态空心玻璃微球运动状态的影响

 研究了载气组份、温度、压力以及微球直径和壁厚对液态空心玻璃微球在炉内运动状态的影响。结果表明：在用干凝胶法制备空心玻璃微球工艺的常用载气组份、温度和压力范围内，载气的组份、温度和压力对相同直径和壁厚的液态玻璃微球在炉内运动速度的影响小于8.3%，但载气组份和压力对液态玻璃微球运动雷诺数和韦伯数的影响很显著。玻璃微球的直径和壁厚是液态玻璃微球运动速度、雷诺数和韦伯数的重要影响因素。提高载气中的氦气含量或降低载气压力可以降低载气对液态玻璃微球的非球形化作用，提高载气温度可以降低其球形化的阻力。

Influence of furnace atmosphere properties on kinetic behaviors of liquid hollow glass microsphere

The objective of this work is to investigate the influence of furnace atmosphere properties on the kinetic behaviors of liquid hollow glass microsphere in the fabrication of target by sol-gel technology. The effects of the composition, temperature and pressure of Ar/He gas mixture on the terminal velocity, Reynolds number and Weber number of liquid glass microsphere were studied. Furthermore, the influences of the microsphere diameter and wall thickness on the terminal velocity, Reynolds number and Weber number were also investigated. The results show that the furnace atmosphere composition, temperature and pressure have little influence on the microsphere terminal velocity, but have a great effect on the Reynolds number and Weber number. The microsphere diameter and wall thickness are two governing factors of its' terminal velocity, Reynolds number and Weber number. Therefore, it is unfeasible to control the residence time of liquid glass microsphere in furnace by changing the composition, temperature or pressure of the furnace atmosphere.