| 高能球磨纳米Co系催化剂粉末的微观应力 |
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| 引用本文： | 张淳,张泉,朱湘萍,廖树帜,张邦维. 高能球磨纳米Co系催化剂粉末的微观应力[J]. 上海金属, 2007, 29(2): 16-19 |
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| 作者姓名： | 张淳 张泉 朱湘萍 廖树帜 张邦维 |
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| 作者单位： | 湖南师范大学数学与计算机科学学院,长沙,410081;湖南师范大学物理与信息科学学院;湖南师范大学物理与信息科学学院;中国科学院国际材料物理中心;湖南大学应用物理系 |
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| 摘 要： | 用X-ray法研究了高能球磨制备Co-La2O3和Co-CeO2催化剂纳米粉末过程中Co粉的微观应力与球磨时间的关系,发现两种不同晶型的稀土氧化物对Co粉微观应力的影响不尽相同,掺La2O3的粉末球磨到15h之内时,Co粉的微观应力随球磨时间的增加而增加,但在15-55h这段范围,微观应力随球磨时间的延长而增加的趋势变缓。掺CeO2的Co粉的微观应力在研究时间范围内随球磨时间的增加几乎呈线性增加。
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| 关 键 词： | 高能球磨 纳米Co催化剂粉末 微观应力 稀土氧化物 搀杂修饰 |
| 修稿时间： | 2006-10-22 |
MICRO STRESS FOR NANO Co CATALYST FINES BY HIGH ENERGY BALL MILLING |
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| Zhang Chun,Zhang Quan,Zhu Xiangping,Liao Shuzhi,Zhang Bangwei. MICRO STRESS FOR NANO Co CATALYST FINES BY HIGH ENERGY BALL MILLING[J]. Shanghai Metals, 2007, 29(2): 16-19 |
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| Authors: | Zhang Chun Zhang Quan Zhu Xiangping Liao Shuzhi Zhang Bangwei |
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| Affiliation: | College of Mathematics and Computer Science, Hunan Normal University; 2. College of Physics and Information Science, Hunan Normal University; 3. International Centre for Materials Physics, Chinese Academy of Sciences; 4. Department of Applied Physics, Hunan University |
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| Abstract: | The relationship between micro stress and milling time for nano Co-LaO3 and Co- CeO2 catalyst fines prepared by high energy ball milling were studied with X-ray method. The influence on Co lattice strain was not the same for different crystal structure of rare earth oxide, La2O3 and CeO2. The lattice strain and micro stress was increasing with the increasing of the milling time before 15 h. But in the milling period of 15 -55 h, micro stress was almost unchanged with the increasing of milling time for La2O3-doped Co powder. The micro stress almost increased linearly with the increasing of milling time for CeO2-doped Co powder. |
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| Keywords: | High Energy Ball Milling Nano Co Catalyst Fines Micro Stress Rare Earth Oxide Mingle Modification |
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