红外, 2013, 34 (4): 34, 网络出版: 2013-04-23
红外探测器杜瓦夹层材料的出气特性研究
Outgassing Characteristic Study of Internal Material in Dewar
摘要
内部夹层材料放气是长寿命杜瓦真空失效的主要原因之一。本文使用四级质谱仪测试了杜瓦夹层材料的出气特性,出气成分主要是水,甲烷、氢气等。基于非金属的放气理论和工程经验,建立了夹层材料的放气特性模型。测试结果对材料的选择、真空除气工艺的优选和烘烤排气工艺的优化有参考意义。
Abstract
Vacuum failure of a long-lifetime Dewar is mainly due to internal outgassing. The outgassing properties of the internal material in a Dewar are tested by using a Quadrupled Mass Spectrometer(QMS). The analysis result shows that the gas consists mainly of H2 O, CH4 , H2 and so on.The model of outgassing properties is established according to the nonmetal outgassing theory. The result is valuable to material selection, optimization of outgassing techniques and Dewar exhausting.
张亚平, 刘湘云, 董黎, 朱颖峰. 红外探测器杜瓦夹层材料的出气特性研究[J]. 红外, 2013, 34(4): 34. ZHANG Ya-ping, LIU Xiang-yun, DONG-li, ZHU Ying-feng. Outgassing Characteristic Study of Internal Material in Dewar[J]. INFRARED, 2013, 34(4): 34.