杂质晶型对AlH_3样品稳定性和安全性影响的研究  

Effects of Phase Impurity on Stability and Security of Aluminum Hydride

作　　者：朱朝阳 马煜 张素敏 王宏志 曹一林 

机构地区：[1]中国航天科技集团四院四十二所,湖北襄阳441003

出　　处：《含能材料》2011年第6期637-640,共4页Chinese Journal of Energetic Materials

摘　　要：α′、β、γ晶型的三氢化铝(AlH3)是乙醚法合成α-AlH3的常见伴生晶型,它们会影响α-AlH3的热力学稳定性和安全性。在常温存储条件,经历约650 d后,γ晶型使得AlH3的分解率由2.13%上升到5.15%。通过撞击、摩擦、静电火花感度测试,含有其他晶型的α-AlH3比纯净α-AlH3的摩擦感度和静电火花感度均有不同程度的增加,其中对静电感度影响较大,与晶型较好的α晶型AlH相比其E数值相差约5-10倍。α′,β,γ-Aluminum hydride（AlH3） is often seen alone in generation of α-AlH3 with aether.Effects of these polymorphs on the thermal stability and safety of AlH3 were studied.At room temperature stored 650 d,the existence of γ-AlH3 increases the decomposition rate of AlH3 from 2.13% to 5.15%.The existence of the impurity polymorphs increases the fricition sensitivity and impact sensitivity.Furthermore,the influence to the electrostatic sensitivity is much more than the others,and the numerical value of E50 is five to ten times than the that of pure α-AlH3 polymorphs.

关 键 词：有机化学 Α-ALH3 晶型 安全性 稳定性 固体推进剂 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]