| WO3粉在高速层间剪切条件下的颗粒破碎特征 |
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| 引用本文： | 卢广锋,张丽英,郭志猛,林涛,吴成义.WO3粉在高速层间剪切条件下的颗粒破碎特征[J].北京科技大学学报,2005,27(4):465-468. |
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| 作者姓名： | 卢广锋 张丽英 郭志猛 林涛 吴成义 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 研究了WO3粉和W粉的剪切破碎时间对WO3粉和W粉的沉降曲线、平均粒度、BET比表面及松装密度的影响.用TEM和SEM对剪切破碎前后的粉末进行了直接观察.结果表明:新型剪切破碎机能有效地粉碎微米级WO3等脆性粉末,同时可以破坏超细W粉中的桥接团粒,使W粉和WO3粉的松装密度增加1倍以上,但对比表面积影响不大.
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| 关 键 词： | 纳米粉末 剪切破碎 桥接团粒 沉降曲线 高速层 剪切条件 颗粒破碎 特征 milling shear interlayer condition particles 比表面积 桥接团粒 破坏 脆性 微米级 剪切破碎机 结果 直接观察 粉末 影响 松装密度 |
| 收稿时间： | 2004-10-19 |
| 修稿时间： | 2004-11-09 |
Broken characteristic of WO3 particles under the condition of high-speed interlayer shear milling |
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| LU Guangfeng,ZHANG Liying,GUO Zhimeng,LIN Tao,WU Chengyi.Broken characteristic of WO3 particles under the condition of high-speed interlayer shear milling[J].Journal of University of Science and Technology Beijing,2005,27(4):465-468. |
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| Authors: | LU Guangfeng ZHANG Liying GUO Zhimeng LIN Tao WU Chengyi |
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| Abstract: | The effects of high energy shear broken time on the settlement curve, mean grain size, BET surface area and apparent density of WO3 and W powders were studied. The powders after and before being broken were observed directly by TEM and SEM. The results showed that by the new-type high energy shear milling micrometer WO3 powder can be broken, and bridged particles in ultrafine W powder can be cracked, with the apparent density of W and WO3 powders doubling, but without much influence on their specific surface area. |
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| Keywords: | nanometer powder high energy shear milling bridged particle settlement curve |
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