| 脉冲电磁场对草酸钴粉末表面分维的影响 |
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| 引用本文： | 杜慧玲,王建中,张震斌,曹力生,苍大强.脉冲电磁场对草酸钴粉末表面分维的影响[J].解放军理工大学学报,2010,11(4):473-477. |
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| 作者姓名： | 杜慧玲 王建中 张震斌 曹力生 苍大强 |
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| 作者单位： | 杜慧玲,王建中(北京科技大学,冶金与生态工程学院,北京,100083;辽宁工业大学,材料与化学工程学院,辽宁,锦州,121001);张震斌(辽宁工业大学,材料与化学工程学院,辽宁,锦州,121001);曹力生(锦州师范专科学校,辽宁,锦州,121001);苍大强(北京科技大学,冶金与生态工程学院,北京,100083) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 以氯化钴为原料,草酸铵为沉淀剂,在脉冲电磁场作用下,采用常规沉淀方法成功地制备了形貌不同的草酸钴粉体,SEM照片和颗粒表面3D视图分析显示草酸钴团聚体颗粒具有分形结构特征。采用差分盒维法计算了团聚体颗粒表面的分形维数,并采用分形维数和轴向比对草酸钴粉末颗粒的形貌进行了表征。结果表明,施加脉冲电磁场条件下制备的草酸钴粉末颗粒的表面分形维数在1.986~2.096之间;脉冲电磁场的作用使草酸钴分维D值增大,颗粒分形形态由开放型转变为紧密型。
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| 关 键 词： | 草酸钴粉体 形貌 分形维数 脉冲电磁场 |
Effects of pulsed electromagnetic field on surface fractal
dimensions of cobalt oxalate powders |
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| DU Hui-ling,WANG Jian-zhong,ZHANG Zhen-bin,CAO Li-sheng and CANG Da-qiang.Effects of pulsed electromagnetic field on surface fractal
dimensions of cobalt oxalate powders[J].Journal of PLA University of Science and Technology(Natural Science Edition),2010,11(4):473-477. |
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| Authors: | DU Hui-ling WANG Jian-zhong ZHANG Zhen-bin CAO Li-sheng and CANG Da-qiang |
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| Institution: | School of Metallurgical & Ecological Engineering,University of Science & Technology Beijing,Beijing 100083,China;School of Material & Chemical Engineering,Liaoning University of Technology,Jinzhou 121001,China;School of Metallurgical & Ecological Engineering,University of Science & Technology Beijing,Beijing 100083,China;School of Material & Chemical Engineering,Liaoning University of Technology,Jinzhou 121001,China;School of Material & Chemical Engineering,Liaoning University of Technology,Jinzhou 121001,China;Jinzhou Normal School,Jinzhou 121001,China;School of Metallurgical & Ecological Engineering,University of Science & Technology Beijing,Beijing 100083,China |
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| Abstract: | Cobalt oxalate pow ders w ith various mo rpholo gies w ere successfully prepared f rom ammo nium
ox alate and cobalt chloride by convent ional precipitat ion w hen the pul sed elect romagnet ic field ( PEMF)
w as int roduced. SEM imag es and 3-D graph of cobalt ox alate particles invest igat ions r evealed that the aspr
epared product s had f ractal st ructur e characterist ic. The surface f ractal dimensions of co balt o xalate aggregate
w ere calculated using dif ferential box count ing ( DBC ) alg orithm. T he morpholog ies of the prepared
samples w er e characterized by sur face fr actal dimensio ns and aspect rat io. T he result s indicate that
the surface f ractal dimensions of cobalt oxalate part icles prepar ed w ith the presence of PEMF are in the
range of 1. 986 to 2. 096, and that the sur face f ractal dimensions incr ease under the act ion of PEMF so that
the fractal mor pholog y of par ticles turns from o pen-st ructur e to t ight-st ructure accordingly |
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| Keywords: | cobalt ox alate pow der morphology f ractal dimension pul sed electromagnetic f ield |
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