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纳米HS型沸石合成及长大机制的研究

杜高辉 , 卫英慧 , 窦涛 , 岩本知広 , 市野濑英喜 , 许并社

无机材料学报

通过清夜合成法成功地合成了纳米ＨＳ沸石，通过Ｘ射线粉末衍射法和高分辨率透 射电镜对产物进行了表征，并对其长大机制进行了分析．结果表明，纳米颗粒包含若干个尺寸 大致相同而晶体学位向不同的亚晶，其长大机制为聚集增长机制．

关键词: 沸石 , nanomaterial , synthesis , HRTEM

Effect of Indium on the precipitation process in Al-3.3Cu-0.7Li alloy

Zhengrong PAN

金属学报(英文版)

The effects of 0.5 wt pct In on Al-3.3Cu-0.8Li alloy were studied. Instead of T1 (Al₂CuLi) phase, there was an unknown cubic phase acting as the dominant precipitates in the In-added alloy in T6 temper, which disappeared in T8 temper. The orientation relationship between this phase and ma...

关键词: Indium , Precipitation , Microstructure , HRTEM , 3DAP

Ti-H合金共析转变产物的形态和结构

康强 , 张彩碚 , 赖祖涵 , 宁小光

金属学报

用ＴＥＭ观察了工业纯α－Ｔｉ板渗氢０．２—１．５３ｗｔ－％后析出的氢化物的形态和结构．结果表明：β－Ｔｉ（Ｈ）共析转变产物是δ氢化物和α－Ｔｉ，不同形状的δ氢化物和α－Ｔｉ微晶组成了微晶区；γ氢化物直接从α－Ｔｉ（Ｈ）中析出．用高分辨电子显微术（ＨＲＴＥＭ）观察了β－Ｔｉ（Ｈ）共析转变形成的微晶区的...

关键词: Ｔｉ－Ｈ合金 , δ hydride , HRTEM , eutectoid transformation

压痕诱发GaAs和Si晶体塑性、损伤与断裂

徐永波

无机材料学报 doi:10.3724/SP.J.1077.2009.01081

对压痕诱发脆性材料塑性、损伤与断裂研究进行总结, 并结合与之有关学科研究进展予以评述. 主要结果：微压痕诱导硅和砷化镓晶体的纳米和非晶转变, 并发现这一转变的临界应力; 转变过程是由切应力, 并非静水压力控制; 电子辐照诱导非晶晶化, 并发现晶化临界条件; ...

关键词: 微压痕 , HRTEM , crystallization and amorphization , crack-tip structure , Fast Fourier Transformation (FFT) and Inverse-Fast Fourier Transformation (IFFT)

DEFORMATION-INDUCED α2→γ TRANSFORMATION IN A HOT DEFORMED Ti-45A1-10Nb ALLOY

J. G. Wang , L.C Zhang , G.L. Chen and H. Q. Ye(State Key Laboratory for Advanced Metals and Materials , University of Science and Technology Beijing , Beijing 100083 , China)(Laboratory of Atomic Imaging of Solids , Institute of Metal Research , The Chinese Academy of Sciences , Shenyang 110015 , China)

金属学报(英文版)

High-resolution transmission electron microscope (HRTEM) was employed to investigate the deformation-induced α2→γ phase transformation phenomenon in a hot deformed Ti-45Al-10Nb alloy. Such a tronsformation can be nucleated either at α2/γ interfaces or at stacking faults on the basal planes of the α2...

关键词: intermetallic compound , null , null , null , null , null

PRODUCTION OF HIGHLY GRAPHITIZED MULTIWALlED CARBON ANOTUBES

X.L.Zhao1) , T.L.Guo2) , M.Ohkohchi3) , T.Okazaki3) , S.Iijima and Y.Ando3) 1) Japan Science and Technology Corporation , Department of Physics , Meijo University , Shiogamaguchi1 501 , Tempaku ku , Nagoya 468 8502 , Japan 2) Scientific Research Department , Shenyang University , Wanghuanan Street21 , Dadong District , Shenyang 110044 , China 3) Department of Physics , Meijo University , Shiogamaguchi 1 501 , Tempaku ku , Nagoya 468 8502 , Japan$

金属学报(英文版)

Multiwalled carbon nanotubes ( MWNTs) were prepared by DCarc dischargein hydrogen gas, and werethermally purified byinfrared radiation in air. The morphology of pristineand purified MWNTs was observed by scanning electron microscope ( SEM) , and the crys tallinestructureand perfection wereinvestig...

关键词: multiwalled carbon nanotubes , null , null , null , null

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