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| 引用本文： | 方培源,钟澄,曹永明.???????????Al????????????[J].质谱学报,2009,30(2):114-117. |
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| 作者姓名： | 方培源 钟澄 曹永明 |
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| 作者单位： | ??????????????????? 200433 |
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| 基金项目： | 上海市纳米中心资助项目 |
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| 摘 要： | ???????????????????????С???????????С????????????????????????????????????????????????????????????????????????????????????????????????????????,?????к?????????????????????,???????????????,?????????????????????????????????????????Al???????????????????????????????????????????????????????????????????????????????????????????塣?????????SIMS??Al???????????????????????????????????
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| 关 键 词： | ?? ????????? Al??? ?????е??????? |
Depth Profile about Diffusion of Aluminum in Nanocrystalline Iron |
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| FANG Pei-yuan,ZHONG Cheng,CAO Yong-ming.Depth Profile about Diffusion of Aluminum in Nanocrystalline Iron[J].Journal of Chinese Mass Spectrometry Society,2009,30(2):114-117. |
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| Authors: | FANG Pei-yuan ZHONG Cheng CAO Yong-ming |
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| Affiliation: | Department of Materials Science, Fudan University, Shanghai 200433, China |
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| Abstract: | SizeofnanostructuredFegrainismuchsmallerthanthatofordinaryones,whichcauseshigherhardness,higherstrengthandbetterwearresisitance.Thereforenanostructured-Feflim,growinguponthesurfaceofordinaryFe,canbeusedaswearresisitantlayer.Nevertheless,nano-Feisveryhighinitsactivityforthereasonofitsnumerousboundaries.Accordingtothetraditionaltheoriesofcorrosion,grainboundariesareactivezones,whichcausesthatnano-Feiseasiertocorrosionthanordinaryones.AftertreatmentwithAluminiumdiffusioninnano-Fefilm,reducingactivityofgrainboudaries,raisingwearresistanceofnano-Fefilmwasprovedbypractice.Theperformanceisequivalenttopremiumsteelplatesofhighstrengthandwearresistance,butwithhighcost.SIMS(secondaryionmassspectrometry)wasusedfordepthprofilingofthermaldiffusionofAlinnano-Fefilminthisexperiment.ThedepthofAluminiumdiffusioninnano-Fefilmismuchdeeperthannormal-Fe. |
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| Keywords: | Fe nanocrystalline Aluminiumdiffusion surfacemechanicalattritiontreatment |
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