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小粒径α-Al_2O_3粉体的表征及其晶体生长机制
作者:董岩 蒋建清 于金 刘凯 梁步青 张超 
单位:东南大学材料科学与工程系 东南大学材料科学与工程系 东南大学材料科学与工程系 东南大学材料科学与工程系 东南大学材料科学与工程系 东南大学材料科学与工程系 南京210096  南京210096  南京210096  南京210096  南京210096  南京210096 
关键词:氧化铝粉体  促进剂  单晶体  生长机制 
分类号:TB44;
出版年,卷(期):页码:2005,33(11):0-0
DOI:
摘要:
对自制的六角片状αAl2O3颗粒进行了电子衍射分析和晶体学位向标定,并对含促进剂的氧化铝晶体的生长机制做了初步探讨。研究表明:合成的六角片状的αAl2O3颗粒为单晶体,其基面为(0001)面,其棱面为(10 10)面;促进剂的加入导致了晶体的各向异性生长,使[10 10]方向的生长速率大于[0001]方向的生长速率,导致片状颗粒的形成。
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A self-made flaky α-Al_2O_3 particle with a hexagonal shape was analyzed by the electron diffraction method,and its crystallography position was calibrated.The growth mechanism of the α-Al_2O_3 crystal with accelerant was investigated.The results show that the flaky α-Al_2O_3 particle synthesized is a single crystal.The horizontal surface is a (0001) plane and the column side is a(10(1)0) plane.Anisotropy growth is caused by the addition of accelerant,resulting in a faster growth rate of the \ direction than that of the \ direction,and also resulting in the formation of flaky particles of α-Al_2O_3 powder.
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基金项目:
江苏省高技术项目(BG2002024);; 国家技术创新计划[(2003)1142]资助项目
作者简介:
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参考文献:
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