Mechanics of Powder Plastic Powder Compacts

Abstract

Colloidal Isopressing is a new method for the shaping of ceramic components from powder suspensions in a rapid and effective manner. Colloidal Isopressing starts with a slurry containing a relatively low volume fraction of powder, where the particles weakly attracted to one another due to a short-range repulsive potential developed during slurry formulation. The slurry is pre- consolidated to a high relative density at a pressure that will allow the consolidated body to be easily fluidized. The fluidized body is injected into a rubber mold, which is subjected to a high pressure in an isopressure. The high pressure pushes the particles into contact to convert the fluid-like body into a elastic body that can be removed from the rubber mold without distorting its shape. The unique attributes of Colloidal Isopressing is that complex shaped bodies can be rapidly produced that do not shrink during drying.

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Document Details

Document Type
Technical Report
Publication Date
Jan 10, 2001
Accession Number
ADA387068

Entities

People

  • Fred F. Lange

Organizations

  • University of California, Santa Barbara

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Aluminum Oxides
  • Body Weight
  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • High Pressure
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanics
  • Modulus Of Elasticity
  • Molecules
  • Particle Size
  • Particles
  • Plastic Properties
  • Shear Modulus

Readers

  • Agricultural Chemistry/Soil Science
  • Fluid Dynamics.
  • Reinforced Composite Materials