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检索文章： 【题名】：A comparison study of the agglomeration mechanism of nano- and micrometer aluminum particles 【作者】：Z.X. Yan⁎, J. Deng, Z.M. Luo 【杂志名全称】：M A T E R I A L S C H A R A C T E R I Z A T I O N (ISSN: 1073-5623) 【年, 卷(期), 起止页码】：2010年1月，6 1 期，第2卷，页码：1 9 8 – 2 0 5。 |
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A comparison study of the agglomeration mechanism of nano- and micrometer aluminum particles Harbin Inst of Tech OPAC National Library of China Tsinghua University Peking University CSDL Union Library of CAS Fudan University Shanghai Jiaotong University 更多选项 作者: Yan ZX (Yan, Z. X.)1, Deng J (Deng, J.)1, Luo ZM (Luo, Z. M.)1 来源出版物: MATERIALS CHARACTERIZATION 卷: 61 期: 2 页: 198-205 出版年: FEB 2010 被引频次: 0 参考文献: 36 引证关系图 摘要: The agglomeration mechanism of micro- and nanosize aluminum particles with a primary mean particle diameter of 4.5 mu m and 75 nm, respectively, was comparatively investigated under an incident shock wave. The morphology, particle size, and agglomeration process of micro- and nanometer alumina particles were comprehensibly compared by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy. Images of X-ray diffraction reveal that a varied of phases of alumina (gamma-, delta-, epsilon-, and alpha-Al2O3) were simultaneously found in the nanosize alumina products, which may give some detail information of the wide variety of reacting temperature of aluminum nanoparticles, while Al4C3 was detected in micrometer alumina products, which also gives some dynamic information of aluminum to alumina, i.e., aluminas have actually reacted with the free active carbon atoms to produce their intermediates. The microstructure of aluminas induced by the incident shock waves was detected and analyzed by using transmission electron microscopy combined with X-ray photoelectron spectroscopy spectrum. These results are an additive evidence to support that the initial stage sintering of the alumina nanosize powders is dominated by grain boundary diffusion, while the volume diffusion is the main character for the initial stage sintering of the micrometer alumina powders. (C) 2009 Elsevier Inc. All rights reserved. 文献类型: Article 语言: English 作者关键词: Aluminum nanoparticle; Aluminum micro-particles; Ignition time; Agglomeration KeyWords Plus: METAL AGGLOMERATION; POWDER COMPACTS; PROPELLANTS; COMBUSTION; STABILITY; OXIDE; MODEL 通讯作者地址: Yan, ZX (通讯作者), Xian Univ Sci & Technol, Minist Educ, Key Lab Western Mine Exploitat & Hazard Prevent, Xian 710054, Peoples R China 地址: 1. Xian Univ Sci & Technol, Minist Educ, Key Lab Western Mine Exploitat & Hazard Prevent, Xian 710054, Peoples R China 电子邮件地址: zhengxinyan163@163.com 基金资助致谢: 基金资助机构 授权号 Natural Science Foundation of China 50874088 Changjiang Scholars and Innovative Research Team in University IRT0856 Education Department of Shannxi Province of China 09JK592 [显示基金资助信息] The work is partly supported by the Natural Science Foundation of China under Grant No 50874088, Changjiang Scholars and Innovative Research Team in University (IRT0856) and the Research Program of the Education Department of Shannxi Province of China under Grant No. 09JK592. 出版商: ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA 学科类别: Materials Science, Characterization & Testing IDS 号: 565QX ISSN: 1044-5803 DOI: 10.1016/j.matchar.2009.11.010 |
3楼2010-04-01 12:24:56
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2楼2010-03-30 21:57:37