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

Author

Khasanov, O.L. ; Dvilis, E.S. ; Pomhoikov, Yu.P. ; Sokolov, V.M.

Author_Institution

R&D Center Spectr, Tomsk Polytech. Univ., Russia

Volume

3

fYear

2000

fDate

2000

Firstpage

257

Abstract

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 ZrO₂-Y₂O₃ nanopowder on compaction pressure, ultrasound power are analysed. Conclusions about the effective range of nanopowder ultrasonic compaction are obtained

Keywords

Poisson ratio; Young´s modulus; ceramics; densification; elastic aftereffect; internal friction; nanostructured materials; powder technology; ultrasonic effects; yttrium compounds; zirconium compounds; Poisson ratio; ZrO₂-Y₂O₃; ceramic nanopowder; compaction pressure; density uniformity; dry compaction parameters; dry moulding parameters; effective compaction range; elastic aftereffect; elastic modulus; elastic properties; green compact quality parameter; internal friction coefficients; lateral pressure; sintered ceramics; sound velocity; ultrasound action; wall friction; Ceramics; Compaction; Elasticity; Friction; Poisson equations; Powders; Pressure measurement; Research and development; Shape; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Ulsan

Print_ISBN

0-7803-6486-4

Type

conf

DOI

10.1109/KORUS.2000.866095

Filename

866095