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首页> 外文期刊>Functional materials letters >HIGHLY EFFICIENT SIZE REDUCTION OF NANOPARTICLESBY THE SHOCK WAVE METHOD
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HIGHLY EFFICIENT SIZE REDUCTION OF NANOPARTICLESBY THE SHOCK WAVE METHOD

机译:冲击波法高效还原纳米颗粒

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摘要

A highly efficient method for size reduction of nanoparticles has been reported. Ferroelectric lead zirconate titanate (PZT) particles were used as an example to indicate the working principle. The typical average particle size of PZT particles prepared by hydrothermal method is between 500 and 1000 nm. Through the application of high intensity focused ultrasound (Hlhll) to the particles, the average size of the particles is reduced to as small as 10-20 nm. The crystalline structure of the treated particles remains according to the X-ray diffraction (XRD) profiles. Transmission electron microscopy (TEM) shows that the treated particles have identical morphology and size. The nonlinear effects of shock wave introduced by HTFU were studied, and the size reduction results were compared with those by ultrasonic cavitations. Finally, the possible reasons for less damage caused by shock wave were discussed.
机译:已经报道了用于减小纳米颗粒尺寸的高效方法。以铁电锆钛酸铅(PZT)颗粒为例来说明其工作原理。通过水热法制备的PZT颗粒的典型平均粒径在500至1000nm之间。通过将高强度聚焦超声(Hlhll)应用于粒子,粒子的平均尺寸减小到10-20 nm。根据X射线衍射(XRD)曲线,保留了处理过的颗粒的晶体结构。透射电子显微镜(TEM)显示处理后的颗粒具有相同的形态和尺寸。研究了HTFU引入的冲击波的非线性效应,并将其减小的结果与超声空化的结果进行了比较。最后,讨论了冲击波造成损伤较小的可能原因。

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  • 来源
    《Functional materials letters》 |2010年第4期|p.299-302|共4页
  • 作者单位

    College of Mechanical EngineeringNanjing University of Aeronautics and Astronautics210016 Nanjing, China;

    Department of Materials, Cranfield UniversityMK43 OAL Bedfordshire, UK;

    College of Mechanical EngineeringNanjing University of Aeronautics and Astronautics210016 Nanjing, China;

    School of Applied Sciences, Cranfield UniversityMK43 OAL Bedfordshire, UK;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanoparticle; size reduction; shock wave; pzt.;

    机译:纳米粒子尺寸缩小;激波;pzt。;

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