FeAl金属间化合物多孔材料的制备

1、FeAl111 1121.4100832.210009Fe Al,FeAl,.,FeAl;1000,FeAl;1000FeAl35.3%, 2.0m;Kirkendall.,FeAl,KirkendallTG1461005-3093(200805-0485-05Preparation of porous FeAl materialGAO Haiyan1HE Yuehui1SHEN Peizhi1JIANG Yao1HUANG Baiyun1XU Nanping21.State Key Laboratory of Powder Metallurgy,Central South Universit

2、y,Changsha4100832.Membrane Science and Technology Research Center,Nanjing University of Technology,Nanjing210009*Supported by National Natural Science Foundation of China No.20636020and Hunan Provincial Natural Science Foundation of China No.05JJ30097.Manuscript received December5,2007;in revised fo

3、rm June6,2008.KEY WORDS metallic materials,FeAl,intermetallics,porous material,Kirkendall eect,1,2.34567,.,.,2.,*20636020,05JJ30097.2007125;200866.:,.,5.FeAl,1200810.FeAl11,1213,1415.Fe Al,Kirkendall161819,20FeAl.1(99.8%,310m.Fe:Al=6:4(.200MPa4862232mm3mm,.103Pa,Kirkendall,FeAl.500,550,600,650,700,7

4、50, 800,850,900,1000,11001200.Archimedes( ,FBP3,D/MAX3A X(XRDFeAl,JSM6360LV (SEMFeAl.22.1Fe Al FeAlFe Al FeAl.Fe Al,FeAl(SHS21.,FeAl21.,FeAl.1FeAl(1aFeAl(1b.2,750, 1FeAlFig.1Top View of porous FeAl compact discs:(adie pressing,(bcold isostatic pressing14.4%;500700,FeAl;700750,750;100014.2%;1200,.3,5

5、001000FeAl ,;1000,35.3%, 2.0m;1100,.2.2FeAl4,500,Fe Al,;700,Fe Fe2Al5FeAl,Fe2Al5FeAl,Al.(, :FeAl8.1%,Fe2Al559.1%,Fe32.8%. 2FeAlFig.2Volume expansions of porous FeAl materials sintered at dierent temperatures3FeAlFig.3Pore structure parameters as a function of the sintering temperature5:FeAl4874FeAlX

6、RDFig.4XRD patterns of porous FeAl materials with dierentnal sintering temperaturesFe2Al5,500700,Fe+AlFe2Al5.1000FeAl,7001000Fe2Al5Fe FeAl.,Fe Al FeAl2Fe+5AlFe2Al5Fe2Al5+3FeFeAl.:2Fe+5AlFe2Al5V=3.02%(1 Fe2Al5+3FeFeAlV=12.56%(2V,.,.,.2.3FeAlFe Al,(5a.1000,(5b,Fe/Al.6.Fe Al,FeAl35.3%;,Fe AlKirkendall(

7、,.,500600(2Kirkendall,FeAl16.0%; 5FeAlFig.5Surface morphologies of porous FeAl materials(abefore sintering,(bafter sintering6FeAlFig.6Pore formation and classify in the porous FeAl material fabrication procedure2Fe+5AlFe2Al521,.,600,Fe Al Al,Al Fe.,Al21,Al Al.2,488227FeAlFig.7The microstructure of p

8、orous FeAl material.,Al FeFe2Al5.Fe Fe2Al5 ,Fe2Al5,.600700Al,39.1%;Al,Fe2Al5+3FeFeAl.Al,Fe2Al5Fe FeAl1000,.,Fe2Al5+3FeFeAl12.56%.(2,FeAl.,.,(3,9.6%.,FeAl:Kirkendall(.FeAl,7.31.Fe AlFeAl,1000,;1000FeAl35.3%, 2.0m.2.FeAl,Fe2Al5.3.FeAl:Kirkendall,.1 A.Julbe,D.Farrusseng,C.Guizard,Porous ceramic mem-bra

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10、i-modal pores prepared by foaming and starch consolidation,Ce-ramics International,34(1,107(20085YANG Hansong,ZHU Yongchang,LI Muqin,L V Ying, Current situation and development of porous ceramic ma-terial,Journal of Jiamusi University,23(1,88(2005(,23(1,88(20056X.Zhu, D.Jiang,S.Tan,Preparation of si

11、licon carbide reticulated porous ceramics,Materials Science and Engi-neering A,323(1-2,232(20028David G.Morris,Maria A.Mun oz-Morris,Jesus Chao,Development of high strength,high ductility and high creep resistant iron aluminide,Intermetallics,12, 821(2004havior of FeAl intermetallicsoxide scales for

12、med in ambi-ent atmosphere,Scripta Mater.,42,975(2000A.Toshio,Isothermal oxidation behavior of a sheet alloyof Fe40at.%Al at temperatures between1073and1473 K,Intermetallics,11,697(2003of Fe40Al sheet in H2H2S mixtures at high tempera-tures,Intermetallics,12,469(2004ior of Fe40Al sheet in N211.2O27.5CO2atmospheres with various SO2contents at1273K,Intermetallics,11, 135(2003rosion of some B2iron aluminides,Intermetallics,9, 817(20015:FeAl489eect in multiphase diusion,