铝镁合金粉与水反应特性研究  

Study on Reaction Characteristic of Al-Mg Alloy Powder with Water

作　　者：邹辉[1] 徐长娟[1] 蔡水洲[1] 

机构地区：[1]华中科技大学材料科学与工程学院材料成型与模具技术国家重点实验室,湖北武汉430074

出　　处：《广州化工》2015年第19期61-63,共3页GuangZhou Chemical Industry

基　　金：NSAF联合基金(U1530127);自主创新基金(2011TS040)

摘　　要：利用联机电脑系统实时监测了高压反应釜内Al0.5Mg0.5/H2O体系的反应过程,针对反应体系的T-t曲线进行分析,提取并定义了反应过程的三个特征温度点和三个特征参数,从而建立了Al0.5Mg0.5/H2O反应的评价体系,作为评价Al0.5Mg0.5/H2O体系反应性能的标准。根据此方法,分析研究了粉末粒径、存储条件、加热功率和水燃摩尔比对Al0.5Mg0.5/H2O反应特性的影响,得出体系的最佳反应条件。结果表明,粒径为500目的合金粉末放热性能最好,密封存储的合金放热更加完全,合金粉末具有更高的转化率;高功率加热条件使得体系能够在更短时间内开始反应,更有利于激发反应体系进行集中高效释放能量;Al0.5Mg0.5/H2O体系的最佳水燃摩尔比为1.75∶1。The computer system was employed to monitor the reaction processes of Al0. 5 Mg0. 5/H2 O systems and the T-t curves of the Al0. 5 Mg0. 5/H2 O reaction systems were analyzed. Three characteristic temperature points and three reaction characteristics were extracted and defined. An evaluation system of Al0. 5 Mg0. 5/H2 O reactions based on these was established to study the properties of the systems. The effects of particle size, storage condition, heating power, and mole ratio of Al0. 5 Mg0. 5/H2 O were investigated according to the established evaluation standard. The results showed that the 500-mesh Al0. 5 Mg0. 5 alloy powder had the best heat release performance. Sealed storage alloy could release heat more completely. High heating power could facilitate the reaction of the systems in a shorter time and was conductive to the concentrated and efficient heat release. It was observed that the best mole ration of H2 O/Al0. 5 Mg0. 5 in the reation system was 1. 75：1.

关 键 词：Al0.5Mg0.5/H2O体系 反应特性 影响因素 

分 类 号：V438[航空宇航科学与技术—航空宇航推进理论与工程]