金属学报  1995, Vol. 31 Issue (2): 79-84

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几种纳米固体材料的显微结构特征

平德海;李斗星;叶恒强;吴希俊

中国科学院金属研究所固体原子像开放研究实验室;浙江大学

^MICROSTRUCTURE OF NANOCRYSTALLINE MATERIALS

PING Dehai; LI Douxing; YE Hengqiang(Laboratory of Atomic Imaging of Solids;Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015). WU Xijun(Zhejiang University; Hangzhou 310014) (Manuscript received 94-06-30)

平德海;李斗星;叶恒强;吴希俊. 几种纳米固体材料的显微结构特征[J]. 金属学报, 1995, 31(2): 79-84.
, , , . ^MICROSTRUCTURE OF NANOCRYSTALLINE MATERIALS[J]. Acta Metall Sin, 1995, 31(2): 79-84.

摘要 参考文献 相关文章 Metrics 全文: PDF(644 KB)   摘要: 本文利用高分辨电镜（ＨＲＥＭ）对两种不同方法制备的纳米固体材料的微观结构进行了研究．结果表明，在惰性气体凝聚加原位加压法制备的纳米固体Ｐｄ中，晶界上既有有序的区域，同时又存在局部不完整或无序的区域以及纳米级的空洞，而且晶粒内部及晶界区存在大量的缺陷．在非晶晶化制备的Ｔｉ－Ｎｉ－Ｓｉ和Ｆｅ－Ｍｏ－Ｓｉ－Ｂ纳米合金中，晶界基本上为有序结构，没有明显的无序区或纳米空洞存在，缺陷的密度也较低．在两种不同方法制备的纳米固体中，晶界都呈现出弯曲的特征，而且邻近晶界的区域存在点阵畸变． 关键词 ： 纳米固体材料,  晶界结构,  缺陷结构,  高分辨电镜     Abstract：The grain boundaries in nanocrystalline palladium synthesized by the inert gas condensation and in situ compacting method have ordered and imperfect or disordered regions. Nanovoids are also observed at the interfaces. High density of dislocations are detected inside the grains and at the grain boundaries. Most of the interfaces in nanocrystalline Ti-Ni-Si and Fe-Mo-Si-B alloys produced by the amorphous crystallization have ordered structure. No obvious disordered regions and nanovoids are observed at the interfaces. However, the lattice fringes near the ordered grain boundaries or interfaces regions in the nanocrystalline materials produced by the various process show curved and a little distorted appearance. In comparison with the nanocrystalline palladium, the nanocrystalline alloys obtained from the amorphous crystallization have much lower density of dislocations.Correspondent:PING Dehai,(Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015) Key words： nanocrystalline materials    grain boundary    defect    high resolution electron microscopy 收稿日期: 1995-02-18      基金资助:国家自然科学基金;;国家高技术新材料领域专家委员会的联合资助 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 平德海 李斗星 叶恒强 吴希俊 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1995/V31/I2/79 1MelendresCA,NarayanasamyA,MaroniVA,SiegelRW．J．MaterRes,1989:4:12462FitzsimmonsMR,EastmanJA,Miiller-StachM,WallnerG．PhysRev．1991:44B:24523JorraE,FranzH,PeislJ,WallnerG,PetryW,BirringerR,GleiterH,HauboldT．PhilosMag,1989:60B:1594ZhuX,BirringerR,HerrU,GleiterH．PhysRev,1987;35B:90855HauboldT,BirringerR,LengelerB,GleiterH．PhysLett,1989:135:4616GleiterH．ProgMaterSci,1989;33:2237WunderlichW,IshidaY,MaurerR．SerMetallMater,1990;24:4038SiegelRW,ThomasGJ．Ultramicroscopy,1992,40:3769LiDX,PingDH,YeHQ,QinXY,WuXJ．MaterLett,1993;18:2910YshizawaY,OgumaS,YamauchiKJApplPhys,1988:64:606411LuK,WangJT,WeiWD．JApplPhys,1991;69:52212吴希俊．力学进展,1991．21:6313BirringerR,HerrU,GleiterH．TransJpnInstMet,1986:27(Suppl．):43: [1] 徐刚 楚大锋 蔡琳玲 周邦新 王伟 彭剑超. RPV模拟钢中纳米富Cu相的析出和结构演化研究[J]. 金属学报, 2011, 47(7): 905-911. [2] 钟震晨. 铝基纳米复合材料的电子显微镜研究[J]. 金属学报, 1996, 32(2): 215-218. [3] 平德海;秦晓英;李斗星;张立德;叶恒强. Ag-Cu纳米合金的微观结构[J]. 金属学报, 1996, 32(10): 1087-1092. [4] 陈达;陆敏;林栋梁. Ni_3Al合金中晶界与位错交互作用的研究[J]. 金属学报, 1993, 29(7): 34-39. [5] 吴玉琨;黄建宇;何安强;胡魁毅;孟祥敏. 难互溶Cu-Fe系机械合金化的高分辨电镜研究[J]. 金属学报, 1993, 29(12): 39-46. [6] 林栋梁;陈达. Ni_3Al晶界结构的计算机模拟[J]. 金属学报, 1990, 26(3): 10-17. Viewed Full text Abstract Cited   Shared      Discussed