| 纳米硬质合金粉的桥接团粒对粉末成形影响 |
| |
| 引用本文： | 张丽英,郭志猛,林涛,李汶霞,吴成义,吴庆华.纳米硬质合金粉的桥接团粒对粉末成形影响[J].北京科技大学学报,2002,24(2):103-106. |
| |
| 作者姓名： | 张丽英 郭志猛 林涛 李汶霞 吴成义 吴庆华 |
| |
| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083;2. 北京中拓科技所,北京,100096 |
| |
| 基金项目： | 国家自然科学基金;50004001; |
| |
| 摘 要： | 采用汞压仪和AMT-2400孔径分析仪,研究纳米硬质合金粉末"桥接"团粒对粉末及其压坯中孔隙体积分布曲线的影响.用沉降分离、高能剪切粉碎、(BET)比表面分析和扫描电镜观察等手段研究了桥接团粒在分离和破碎过程中,相对松装密度和比表面积的变化及高能破碎对粉末成形致密化的影响.结果表明"桥接"团粒会造成不同的孔隙体积分布高峰,高能破碎使粉末的相对松装密度成倍增加,并可使压坯的密度大幅度增加.
|
| 关 键 词： | 桥接团粒 高能剪切粉碎 压坯 纳米粉末 硬质合金 孔隙体积 |
| 修稿时间： | 2001年6月4日 |
Effects of Bridged Particles on the Compressibility of Nanometer Cemented Carbide Powder |
| |
| ZHANG Liying,GUO Zhimeng,UN Tao,LI Wenxia,WU Chengyi,WU Qinghua Material Science and Engineering School,UST Beijing,Beijing ,China Chntop S&T Co Ltd,Beijing.Effects of Bridged Particles on the Compressibility of Nanometer Cemented Carbide Powder[J].Journal of University of Science and Technology Beijing,2002,24(2):103-106. |
| |
| Authors: | ZHANG Liying GUO Zhimeng UN Tao LI Wenxia WU Chengyi WU Qinghua Material Science and Engineering School UST Beijing Beijing China Chntop S&T Co Ltd Beijing |
| |
| Institution: | ZHANG Liying,GUO Zhimeng,UN Tao,LI Wenxia,WU Chengyi,WU Qinghua Material Science and Engineering School,UST Beijing,Beijing 100083,China Chntop S&T Co Ltd,Beijing 100096 |
| |
| Abstract: | By means of the mercurial barometer and pore size analyzer, the effects of bridged particles on the pore volume distribution in nano-meter cemented carbide powder and its compact were investigated. Also the apparent density, specific surface area and green density were studied before and after sedimentation sep- arating and high energy shear milling by BET specific surface area analyzer and SEM. The results show that there is more than one peak on pore volume distribution pattern because of the presence of bridged particles. The apparent density and green density can be greatly improved by high-energy milling. |
| |
| Keywords: | bridged particle high-energy shear milling compact nano-meter powder cemented carbide pore volume |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
