Low expansion ceramic

Details Low expansion ceramic Low expansion ceramic

1987-03-13

1989-01-31

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 94, 501102, 501123, 501134, 501135, 423306, C04B 3548

Patent

active

048015660

ABSTRACT:
Crystalline solid solutions and diphasic mixtures having a composition of Ca.sub.1-x M.sub.x Zr.sub.4 P.sub.6 O.sub.24, where M is Ba and/or Sr and X is between about 0.25 and 0.75, have been produced which display both low anisotropy and near zero bulk thermal expansion behavior.

REFERENCES:
patent: 4526844 (1985-07-01), Yoldas et al.
patent: 4587172 (1986-05-01), Roy et al.
patent: 4675302 (1987-06-01), Roy et al.
Oota and Yamai, Thermal Expansion Behavior of NaZr.sub.2 (PO.sub.4).sub.3 -Type Compounds, J. Am. Ceram. Soc. 69 [1] 1-6 (1986).
Alamo and Roy, Crystal Chemistry of the NaZr.sub.2 (PO.sub.4).sub.3, NZP or CTP, Structure Family, J. Mater. Sci. 21, 444-450 (1986).
Agrawal and Stubican, Synthesis and Sintering of Ca.sub.0.5 Zr.sub.2 P.sub.3 O.sub.12 -A Low Thermal Expansion Material, Mat. Res. Bull. 20, 99-106 (1985).

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