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Mechanical Milling Process Modeling And Making Wc Nanocrystalline Powder

机译:机械研磨工艺建模与制备WC纳米晶粉

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摘要

A model of mechanical milling of powders is proposed. It is demonstrated that, during milling, the energy is partially spent in generating microstresses, which hinders the milling process. The model is compared with experiment for tungsten carbide (WC) powder. The average particle size and the value of the microstrains in the as-milled powder are determined from the broadening of x-ray diffraction reflections. Particle size is also evaluated by scanning electron microscopy and sedimentation analysis. It is shown that, with all other things being equal, upon grinding in a planetary-type mill, the resulting particle size is less, the greater the angular velocity of the mill rotation, the longer the milling time, the lighter the weight of the powder milled, and the smaller the initial powder particle size.
机译:提出了粉末机械研磨的模型。结果表明,在铣削过程中,能量被部分花费在产生微应力上,这阻碍了铣削过程。将该模型与碳化钨(WC)粉末的实验进行了比较。研磨后的粉末中的平均粒径和微应变值由X射线衍射反射的增宽确定。粒度也通过扫描电子显微镜和沉降分析来评估。结果表明,在所有其他条件相同的情况下,在行星式研磨机中进行研磨时,所得到的粒径较小,研磨机旋转的角速度越大,研磨时间越长,则研磨机的重量越轻。研磨后的粉末,初始粉末粒度较小。

著录项

  • 来源
    《Inorganic materials》 |2009年第1期|p.35-42|共8页
  • 作者

    A. I. Gusev; A. S. Kurlov;

  • 作者单位

    Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, ul. Pervomaiskaya 91, GSP-145, Yekaterinburg, 620041 Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

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