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玻璃微球壁厚和预充气工艺对气体渗透性能的影响
引用本文:张占文,李波,唐永建,王朝阳,漆小波,陈素芬,刘一杨,翟世明.玻璃微球壁厚和预充气工艺对气体渗透性能的影响[J].强激光与粒子束,2006,18(6):957-960.
作者姓名:张占文  李波  唐永建  王朝阳  漆小波  陈素芬  刘一杨  翟世明
作者单位:中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621900
基金项目:国家863计划项目资助课题
摘    要: 以空心玻璃微球为研究对象,利用高压充气系统充气,测量了不同条件下玻璃微球对氘气在室温条件下的气体渗透系数。研究结果表明:微球的壁厚对气体渗透系数影响较大,2 mm以上厚壁球的气体渗透系数约5.0×10-22 mol·m-1·s-1·Pa-1,而壁厚小于1 mm时,渗透系数约1.56×10-20 mol·m-1·s-1·Pa-1,两者相差30倍。预充气挑选工艺对微球的气体渗透系数也产生一定影响,对于薄壁空心玻璃微球一次充放气气体渗透系数增加约50%,两次充放气则增大一倍左右。对上述影响因素进行了初步的探讨,气体渗透系数改变的主要原因是玻璃微球表面的结构裂纹、空位和缺陷。

关 键 词:惯性约束聚变  空心玻璃微球  气体渗透系数  充气工艺
文章编号:1001-4322(2006)06-0957-04
收稿时间:2006-02-23
修稿时间:2006-05-16

Influence of wall thickness and filling gas procedure on permeability of hollow glass microsphere
ZHANG Zhan-wen,LI Bo,TANG Yong-jian,WANG Chao-yang,QI Xiao-bo,CHEN Su-fen,LIU Yi-yang,ZHAI Shi-ming.Influence of wall thickness and filling gas procedure on permeability of hollow glass microsphere[J].High Power Laser and Particle Beams,2006,18(6):957-960.
Authors:ZHANG Zhan-wen  LI Bo  TANG Yong-jian  WANG Chao-yang  QI Xiao-bo  CHEN Su-fen  LIU Yi-yang  ZHAI Shi-ming
Institution:Research Center of Laser Fusion, CAEP, P.O.Box 919-987, Mianyang 621900, China
Abstract:The influence of the wall thickness and filling gas procedure on the permeability of the hollow glass microspheres (HGM) were discussed. The primary experiments show that the deuterium permeation coefficient was 5.0×10-22 mol·m-1·s-1·Pa-1 with the wall thickness more than 2 mm at room temperature, while it was 1.56×10-20 mol·m-1·s-1·Pa-1 with the wall thickness less than 1 mm. The permeation coefficient of thin wall HGM increased 30 times more than that of thick one. The main reason for the effect of the wall thickness on the HGM permeability was microcrack on the HGM surface. The permeation coefficient increases about 50% if HGM experienced one cycle of filling and deflating gas, and doubles after two cycles owing to the voids and flaws on the HGM surface caused by high temperatur
Keywords:Inertial confinement fusion  Hollow glass microsphere  Gas permeability  Filling gass procedure
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