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納米硬質合金粉的橋接團粒對粉末成形影響

張麗英,  郭志猛,  林濤,  李汶霞,  吳成義,  吳慶華

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文章導航 > 工程科學學報  > 2002 >  24(2): 103-106
張麗英, 郭志猛, 林濤, 李汶霞, 吳成義, 吳慶華. 納米硬質合金粉的橋接團粒對粉末成形影響[J]. 工程科學學報, 2002, 24(2): 103-106. doi: 10.13374/j.issn1001-053x.2002.02.003
引用本文: 張麗英, 郭志猛, 林濤, 李汶霞, 吳成義, 吳慶華. 納米硬質合金粉的橋接團粒對粉末成形影響[J]. 工程科學學報, 2002, 24(2): 103-106. doi: 10.13374/j.issn1001-053x.2002.02.003
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ZHANG Liying, GUO Zhimeng, LIN Tao, LI Wenxia, WU Chengyi, WU Qinghua. Effects of Bridged Particles on the Compressibility of Nanometer Cemented Carbide Powder[J]. Chinese Journal of Engineering, 2002, 24(2): 103-106. doi: 10.13374/j.issn1001-053x.2002.02.003
Citation: ZHANG Liying, GUO Zhimeng, LIN Tao, LI Wenxia, WU Chengyi, WU Qinghua. Effects of Bridged Particles on the Compressibility of Nanometer Cemented Carbide Powder[J]. Chinese Journal of Engineering, 2002, 24(2): 103-106. doi: 10.13374/j.issn1001-053x.2002.02.003
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納米硬質合金粉的橋接團粒對粉末成形影響

doi: 10.13374/j.issn1001-053x.2002.02.003

  • 1. 北京科技大學材料科學與工程學院, 北京 100083;

  • 2. 北京中拓科技所, 北京 100096

基金項目: 

國家自然科學基金資助課題(No.50004001)

詳細信息
    作者簡介:

    張麗英 女,58歲,教授

  • 中圖分類號: TF124.5;TF125.2

Effects of Bridged Particles on the Compressibility of Nanometer Cemented Carbide Powder

  • 1. Material Science and Engineering School, UST Beijing, Beijing 100083, China;

  • 2. Chntop S&T Co Ltd, Beijing 100096

    摘要
  • 摘要: 采用汞壓儀和AMT-2400孔徑分析儀,研究納米硬質合金粉末"橋接"團粒對粉末及其壓坯中孔隙體積分布曲線的影響.用沉降分離、高能剪切粉碎。(BET)比表面分析和掃描電鏡觀察等手段研究了橋接團粒在分離和破碎過程中,相對松裝密度和比表面積的變化及高能破碎對粉末成形致密化的影響.結果表明"橋接"團粒會造成不同的孔隙體積分布高峰,高能破碎使粉末的相對松裝密度成倍增加,并可使壓坯的密度大幅度增加.

     

    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 separating 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.

     

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出版歷程
  • 收稿日期:  2001-06-04
  • 網絡出版日期:  2021-08-21

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