纳米陶瓷粉体干压实参数的测定及超声作用对其影响

Proceedings KORUS 2000. The 4th Korea-Russia International Symposium On Science and Technology Pub Date : 2000-06-27 DOI:10.1109/KORUS.2000.866095

O. Khasanov, E. Dvilis, Yu.P. Pomhoikov, V. Sokolov

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引用次数: 0

摘要

陶瓷纳米粉的压实条件对烧结陶瓷的质量和性能有重要影响。提出了纳米粉体干法压实中与粉体弹性性能有关的重要参数的确定方法:粉体弹性模量和声速;泊松比;内摩擦系数、壁面摩擦系数、侧压力系数;高度和直径的弹性后效;密度均匀性;绿色紧凑型质量参数。研究了不同功率超声作用对这些特性的影响。分析了ZrO/ sub2 /-Y/ sub2 /O/ sub3 /纳米粉体的压实参数对压实压力、超声功率的实验依赖关系。得出了纳米粉体超声压实的有效范围。

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Determination of dry compaction parameters of ceramic nanopowder and influence of ultrasound action on them

The conditions of ceramic nanopowder compaction essentially influence the quality and properties of sintered ceramics. Methods for determination of important parameters of nanopowder dry compaction with regard to powder body elastic properties are presented for the following parameters: powder body elastic modulus and sound velocity; Poisson ratio; coefficients of internal friction, wall friction, lateral pressure; elastic aftereffect in height and diameter; density uniformity; green compact quality parameter. The influence of ultrasound action of different power on these characteristics is shown. The experimental dependences of the compaction parameters of ZrO/sub 2/-Y/sub 2/O/sub 3/ nanopowder on compaction pressure, ultrasound power are analysed. Conclusions about the effective range of nanopowder ultrasonic compaction are obtained.

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Proceedings KORUS 2000. The 4th Korea-Russia International Symposium On Science and Technology

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