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Title: Ultra low thermal expansion, highly thermal shock resistant ceramic

Patent ·
OSTI ID:870277
 [1]
  1. 1440 Sandpiper Cir. #38, Salt Lake City, UT 84117
+ Show Author Affiliations

Three families of ceramic compositions having the given formula: .phi..sub.1+X Zr.sub.4 P.sub.6-2X Si.sub.2X O.sub.24, .phi..sub.1+X Zr.sub.4-2X Y.sub.2X P.sub.6 O.sub.24 and .phi..sub.1+X Zr.sub.4-X Y.sub.X P.sub.6-2X Si.sub.X O.sub.24 wherein .phi. is either Strontium or Barium and X has a value from about 0.2 to about 0.8 have been disclosed. Ceramics formed from these compositions exhibit very low, generally near neutral, thermal expansion over a wide range of elevated temperatures.

Research Organization:
Cerametic Inc
DOE Contract Number:
AC05-87ER80502
Assignee:
Limaye, Santosh Y. (1440 Sandpiper Cir. #38, Salt Lake City, UT 84117)
Patent Number(s):
US 5488018
OSTI ID:
870277
Country of Publication:
United States
Language:
English

References (7)

Synthesis and Thermal Expansion of MZr4P6O24 (M=Mg, Ca, Sr, Ba) journal October 1987
REVISION OF CRYSTALLINE PHASES IN THE SYSTEM ZRO 2 -P 2 O 5 journal May 1984
ULTRALOW-EXPANSION CERAMICS IN THE SYSTEM NA 2 O-ZRO 2 P 2 O 5 -SIO 2 journal May 1984
Low-Thermal-Expansion Polycrystalline Zirconyl Phosphate Ceramic journal May 1985
Phase transformation in Na1+xSixZr2P3−xO12 compounds journal November 1979
Thermal Expansion Behavior of NaZr2(PO4)3Type Compounds journal January 1986
Crystal chemistry of the NaZr2(PO4)3, NZP or CTP, structure family journal February 1986

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Related Subjects

ultra
thermal
expansion
highly
shock
resistant
ceramic
families
compositions
formula
phi
zr
6-2x
2x
24
4-2x
4-x
strontium
barium
value
disclosed
ceramics
formed
exhibit
near
neutral
wide
range
elevated
temperatures
thermal shock
ceramic composition
elevated temperatures
thermal expansion
elevated temperature
wide range
resistant ceramic
ceramic compositions
ceramics form
shock resistant
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