含能材料2018，Vol.26Issue(5)：422-425,4.DOI:10.11943/j.issn.1006-9941.2018.05.008
氢化镁对金属混合物最小点火能的影响
Effect of Magnesium Hydride on the Minimum Ignition Energy of Metal Mixture
摘要
Abstract
To study the effect of magnesium hydride (MgH2) on the ignition performance of Al and B mixed system,a new high energy hydrogen-containing ternary metal fuel was prepared by mechanical mixing method using aluminum powder as matrix,boron powder as high energy metal additive,and magnesium hydride (MgH2) as active metal additive The minimum ignition energy (MIE) of Al,B and MgH2 was determined by a 1.2 L Hartmann tube apparatus and the MIE of binary metal mixtures (Al-MgH2,B-MgH2) under the conditions of different MgH2 contents and ternary metal mixture Al-B-MgH2 under the conditions of different boron and MgH2 contents was compared and studied.Results show that the MIE of Al and MgH2 is lower,their values of MIE are 80-100 mJ,5-10 mJ,respectively,the MIE of B is higher,whose MIE is more than 1000 mJ.With the increase of MgH2 content in the mixture from 10％ to 30％,the MIE of Al-MgH2 and B-MgH2 reduces from 50-70 mJ and more than 1000 mJ to 10-20 mJ and 480-500 mJ,respectively.With decreasing the boron content in the ternary mixture Al-B-MgH2 from 25％ to 10％,whose MIE also reduces from 700-800 mJ to 20-30 mJ and when the boron content is certain value,the increase of MgH2 content can significantly decrease the MIE of Al-B-MgH2 metal mixture.When the content of boron powder is reduced to 10％,the MIE of Al-B-MgH2 metal mixture powder can be maintained in the range of 20-40 mJ.关键词
高能含氢固体燃料/金属混合物/1.2 L Hartmann管装置/最小点火能(MIE)Key words
high energy hydrogen-containing solid fuel/metal mixture/1.2L Hartmann tube apparatus/the minimum ignition energy分类
军事科技引用本文复制引用
赵金钢,李玉艳,刘大斌,徐森,潘峰..氢化镁对金属混合物最小点火能的影响[J].含能材料,2018,26(5):422-425,4.基金项目
国家自然科学基金项目(11572329),国家自然科学基金青年项目(11602238,11702265) （11572329）
