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Chemically bonded phospho-silicate ceramics

Patent ·
OSTI ID:875040
 [1];  [2];  [3];  [3]
  1. Orland Park, IL
  2. Westmont, IL
  3. Chicago, IL
+ Show Author Affiliations

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
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

References (2)

Calcium Phosphate Cements Prepared by Acid-Base Reaction journal August 1992
Setting Reactions and Compressive Strengths of Calcium Phosphate Cements journal December 1990

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Related Subjects

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