Chemically bonded phospho-silicate ceramics

Patent · Wed Jan 01 00:00:00 EST 2003

OSTI ID:875040

Wagh, Arun S ^[1]; Jeong, Seung Y ^[2]; Lohan, Dirk ^[3]; Elizabeth, Anne ^[3]

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1. Orland Park, IL
2. Westmont, IL
3. Chicago, IL

A chemically bonded phospho-silicate ceramic formed by chemically reacting a monovalent alkali metal phosphate (or ammonium hydrogen phosphate) and a sparsely soluble oxide, with a sparsely soluble silicate in an aqueous solution. The monovalent alkali metal phosphate (or ammonium hydrogen phosphate) and sparsely soluble oxide are both in powder form and combined in a stochiometric molar ratio range of (0.5-1.5):1 to form a binder powder. Similarly, the sparsely soluble silicate is also in powder form and mixed with the binder powder to form a mixture. Water is added to the mixture to form a slurry. The water comprises 50% by weight of the powder mixture in said slurry. The slurry is allowed to harden. The resulting chemically bonded phospho-silicate ceramic exhibits high flexural strength, high compression strength, low porosity and permeability to water, has a definable and bio-compatible chemical composition, and is readily and easily colored to almost any desired shade or hue.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: The University of Chicago (Chicago, IL)
• Patent Number(s): US 6518212
• OSTI ID: 875040
• Country of Publication: United States
• Language: English

Related Subjects

chemically
bonded
phospho-silicate
ceramics
ceramic
formed
reacting
monovalent
alkali
metal
phosphate
ammonium
hydrogen
sparsely
soluble
oxide
silicate
aqueous
solution
powder
form
combined
stochiometric
molar
ratio
range
05-151
binder
similarly
mixed
mixture
water
added
slurry
50
weight
allowed
harden
resulting
exhibits
flexural
strength
compression
porosity
permeability
definable
bio-compatible
chemical
composition
readily
easily
colored
shade
hue
alkali metal
aqueous solution
powder mixture
powder form
chemically react
chemically bond
hydrogen ph
ceramic form
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