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

Three families of ceramic compositions having the given formula: {phi}{sub 1+X}Zr{sub 4}P{sub 6{minus}2X}Si{sub 2X}O{sub 24}, {phi}{sub 1+X}Zr{sub 4{minus}2X}Y{sub 2X}P{sub 6}O{sub 24} and {phi}{sub 1+X}Zr{sub 4{minus}X}Y{sub X}P{sub 6{minus}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. 7 figs.
Inventors:
Issue Date:
OSTI Identifier:
187077
Assignee:
ORO; SCA: 360201; 360204; PA: EDB-96:037400; SN: 96001532304
Patent Number(s):
US 5,488,018/A/
Application Number:
PAN: 7-341,732; TRN: 96:006435
Contract Number:
AC05-87ER80502
Resource Relation:
Other Information: PBD: 30 Jan 1996
Research Org:
Cerametic Inc
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ZIRCONIUM OXIDES; THERMAL EXPANSION; FABRICATION; PHOSPHORUS OXIDES; SILICON OXIDES; YTTRIUM OXIDES; STRONTIUM OXIDES; BARIUM OXIDES; CHEMICAL COMPOSITION

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