Method of preparing thin porous sheets of ceramic material

Patent · Tue Mar 24 04:00:00 EST 1987

OSTI ID:6616397

Swarr, T E; Nickols, R C; Krasij, M

A method is described of forming a thin porous sheet of ceramic material comprising: providing a slurry of fine ceramic particles and liquid carrier including binder material; spray drying the slurry to form generally spherical porous agglomerates having a rough surface texture; calcining the agglomerates at a sufficient temperature to drive off the binder material and fix the fine ceramic particles in agglomerates of spiky morphology while substantially maintaining the porosity of the particles; slurrying the calcined agglomerates with binder and volatile material to form a slip for casting as a tape; spreading a thin layer of the slip onto a smooth substrate and drying the slip to set the binder and drive off the volatile material to form a porous sheet of ceramic material.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4652411
• OSTI ID: 6616397
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
AGGLOMERATION
BINDERS
CALCINATION
CASTING
CERAMICS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DECOMPOSITION
DIMENSIONS
DISPERSIONS
DRYING
FABRICATION
FLUIDS
LIQUIDS
MATERIALS
MATTER
MIXTURES
MORPHOLOGY
PARTICLES
POROUS MATERIALS
PYROLYSIS
ROUGHNESS
SHEETS
SLURRIES
SPRAY DRYING
SUBSTRATES
SURFACE PROPERTIES
SUSPENSIONS
SYNTHESIS
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
THICKNESS
VOLATILE MATTER