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U.S. Department of Energy
Office of Scientific and Technical Information

Ultra low thermal expansion, highly thermal shock resistant ceramic

Patent ·
OSTI ID:187077
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.
Research Organization:
Cerametic Inc
DOE Contract Number:
AC05-87ER80502
Assignee:
ORO; 360204; SCA: 360201; PA: EDB-96:037400; SN: 96001532304
Patent Number(s):
US 5,488,018/A/
Application Number:
PAN: 7-341,732
OSTI ID:
187077
Country of Publication:
United States
Language:
English