Paper Title:
Compaction Behavior Study of Powder Composed by Nanoparticle Agglomerates and Aggregates
  Abstract

Ceramic powder compaction by pressing requires weak-agglomerated powders to obtain high dense compacts and consequently dense sintered ceramic body. In this work powders with different agglomerated and/or aggregated size distributions was compacted by uniaxial and isostatic pressing. The powder and compacts were characterized by mercury and nitrogen porosimetry, BET and SEM. Analysis of X-rays diffraction peaks was used to determine the particle size (diameter). The Scherrer method was used to obtain the estimated average nanoparticle size. The results showed that all aggregated and weak agglomerated powders were composed by nanoparticles. This study indicated that the nanoparticle aggregates and weak agglomerates were destroyed during the pressing stage conducting to a increase of the packing degree of the powder particles.

  Info
Periodical
Materials Science Forum (Volumes 530-531)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
461-466
DOI
10.4028/www.scientific.net/MSF.530-531.461
Citation
M. do C. de A. Nono, "Compaction Behavior Study of Powder Composed by Nanoparticle Agglomerates and Aggregates", Materials Science Forum, Vols. 530-531, pp. 461-466, 2006
Online since
November 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: M.A. Ribeiro, Ana Cristina Figueiredo de Melo Costa, Hélio Lucena Lira, J.B.L. de Oliveira, Ruth Herta Goldsmith Aliaga Kiminami, Lucianna Gama
Abstract:Conventional methods to obtain ceramic powders are inadequate for many technological applications because these powders react but slightly to...
722
Authors: Normanda Lino de Freitas, Elias Fagury-Neto, Hélio Lucena Lira, Lucianna Gama, Ruth Herta Goldsmith Aliaga Kiminami, Ana Cristina Figueiredo de Melo Costa
Abstract:Among ceramic materials, the alumina has high importance because of its characteristics of resistance and refractory. The possibility to...
631
Authors: Ling Yuan, Long Hao Qi, Wei Pan
Chapter 1: Novel Processing and Manufacturing
Abstract:The high-pure alpha-alumina powders with some agglomerate were treated by bead milling and their sintering behaviors were studied in this...
36