Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第17卷    第12期    总第105期    2007年12月

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文章编号:1004-0609(2007)12-1999-06
Mg粉的新型包覆处理及其水反应特性
刘冠鹏,郭效德,段红珍,姜 炜,李凤生

(南京理工大学 国家特种超细粉体中心,南京 210094)

摘 要: 为了提高Mg粉的水反应活性和抗氧化能力,采用气相沉积和液相沉积法对Mg粉进行二次包覆改性处理得到复合粉末。用粒度分析、SEMXRD等测试手段对复合粉末进行测试和表征,采用热分析法对复合粉末的抗氧化性能进行分析,并通过测定样品与水反应产生氢气的量对其水反应活性进行了表征。结果表明:Mg表面连续均匀地包覆无机和有机的膜层,制备出的复合粉末呈现出Mg−包覆剂A−HTPB核壳膜结构;经包覆处理后的Mg粉的抗氧化能力及与水的反应速率和程度均得到提高,达到在一定条件下控制Mg粉与水反应的目的。

 

关键字: Mg;推进剂;包覆;水反应燃料

New surface coating on Mg powders and their characteristics of reaction with water
LIU Guan-peng , GUO Xiao-de, DUAN Hong-zhen,JIANG Wei, LI Feng-sheng

National Special Superfine Powder Engineering Research Center,Nanjing University of Science and Technology, Nanjing 210094, China

Abstract:To improve their water-reactivity and antioxidant activity, the surfaces of Mg powders were re-modified by vapor deposition and liquid deposition methodologies. The coated Mg powders were characterized by and analyzed by using laser particle size analyzer, scanning electron microscope and X-ray diffraction. The antioxidant activity was measured by DSC, while the hydrogen generating ability was determined by the amount of hydrogen produced. The results show that the re-modified surfaces of Mg powders are uniformly coated with inorganic and organic thin films, and the composite Mg powders are meso-structured as Mg-coating reagent A-HTPB. The antioxidant activity of Mg powders and their ability to react with water are improved due to the surface re-modification, which makes it possible to control the reaction between Mg powders and water.

 

Key words: Mg; propellant; coating; hydroreactive metal fuel

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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