Method for molding ceramic powders using a water-based gel casting

Patent · Tue Jul 02 00:00:00 EDT 1991

OSTI ID:867892

Janney, Mark A ^[1]; Omatete, Ogbemi O ^[2]

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1. Knoxville, TN
2. Lagos, NG

A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product any be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5028362
• Application Number: 07/434,624
• OSTI ID: 867892
• Country of Publication: United States
• Language: English

Related Subjects

/264/501/
aqueous
aqueous solvent
casting
ceramic
ceramic powder
ceramic powders
comprises
comprises forming
containing
crosslink
difunctional
dispersant
firm
firm polymer-solvent
form
forming
free-radical
free-radical initiator
heated
including
including ceramic
initiator
matrix
method
mixture
mixture including
mold
mold containing
molding
molding ceramic
monofunctional
monomer
monomer solution
polymer
polymer-solvent
polymerize
powder
powders
powders comprises
product
radical initiator
remove
removed
sintered
slurry
slurry mix
slurry mixture
solid
solid product
solution
solvent
subsequently
subsequently remove
transferred
water-based
whereafter