低温大试样热胀系数测试  

THE MEASUREMENT OF THERMAL EXP ANSION COEFFICIENT OF SOME LARGE SIZE OF SPECIMEN AT LOW TEMPERATURE

作　　者：喻力弘[1] 林鹏[1] 张庆庚[1] 张亮[1] 

机构地区：[1]中国科学院理化技术研究所,北京100080

出　　处：《低温物理学报》2005年第1期91-96,共6页Low Temperature Physical Letters

摘　　要：本文介绍了用熔融石英引伸法测量硬质材料热胀系数的简便装置 ,并给出了试样在液氦温区到室温的测量结果 ,数据的一致性以及与已有文献数据比较取得了不错的结果 .The apparatus for linear thermal expansion of rigid solid materials with a vitreous silica dilatometer is introduced in this paper. Valuable datum has been gained from liquid helium temperature, 4.2K, to room temperature, 293K. The experimental results prove that the apparatus for thermal expansion measurement is a reliable and economic method.

关 键 词：热胀系数 熔融石英引伸法 液氦温区 长征三号系列运载火箭 低温燃料储箱 

分 类 号：TB30[一般工业技术—材料科学与工程]