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 (United States)
• DOE Contract Number: AB01-87GC20701
• 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

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