典型文献
Spatial phase structure and oxidation process of Al-W alloy powder with high sphericity
文献摘要：
In this study,Al-30W(wt.％)alloy powder was prepared by Aluminothermic reduction and high-temperature gas atomization.We then studied the phase composition,surface morphology,spatial phase structure,and thermal oxidation process using XRD,SEM/EDS,TEM,DSC,and DTA/TG analysis.The results showed that the Al-30W alloy powder exhibited high sphericity,and the interior presented a special spa-tial phase structure in which the Al/W amorphous alloy phase and the metastable Al/W intermetallic compound phase were distributed in the pure Al matrix.When the Al-30W alloy powder was stabilized in a vacuum tube furnace,the spatial phase structure of the alloy powder changed,and a small amount of pure Al was embedded in the Al12W matrix.The resulting Al-30W alloy powder products,treated in air at different temperatures,were collected in situ and characterized.The results presented that with an increase in temperature,the types and morphologies of the Al/W intermetallic compounds in the Al-30W alloy powder changed.Furthermore,the Al-30W alloy powder began to undergo intense oxidation reactions at about 900℃,accompanied by a concentrated energy release and rapid weight gain.The volatilization of WO3 produced in the oxidation process promoted the complete oxidation of the Al-30W alloy powder,and the Al-30W alloy powder was completely oxidized at 1300℃.At this stage,all W atoms were transformed into gaseous W03,and only a large number of small A1203 fragments remained in the oxidation product.Thus,the Al-30W alloy powder exhibited excellent thermal reactivity and oxi-dation integrity,and may offer excellent application prospects in the field of energetic materials.
文献关键词：
中图分类号：
作者姓名：
Aobo Hu;Shuizhou Cai
作者机构：
State Key Laboratory of Material Processing and Die&Mould Technology,The School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
文献出处：
引用格式：
[1]Aobo Hu;Shuizhou Cai-.Spatial phase structure and oxidation process of Al-W alloy powder with high sphericity)[J].材料科学技术（英文版）,2022(19):62-72
A类：
Aluminothermic,Al12W
B类：
Spatial,phase,structure,oxidation,process,alloy,powder,high,sphericity,In,this,study,30W,wt,was,prepared,by,reduction,atomization,We,then,studied,composition,surface,morphology,spatial,thermal,using,EDS,TEM,DSC,DTA,analysis,results,showed,that,exhibited,interior,presented,special,which,amorphous,metastable,intermetallic,were,distributed,pure,matrix,When,stabilized,vacuum,tube,furnace,changed,small,amount,embedded,resulting,products,treated,air,different,temperatures,collected,situ,characterized,increase,types,morphologies,compounds,Furthermore,began,undergo,intense,reactions,about,accompanied,concentrated,energy,release,rapid,weight,gain,volatilization,WO3,produced,promoted,completely,oxidized,At,stage,atoms,transformed,into,gaseous,W03,only,large,number,A1203,fragments,remained,Thus,excellent,reactivity,integrity,may,offer,application,prospects,field,energetic,materials
AB值：
0.467313
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