Thermal Expansion Behavior of NaZr2(PO4)3Type Compounds

Journal of the American Ceramic Society - Tập 69 Số 1 - Trang 1-6 - 1986
Toshitaka Oota1, Iwao Yamai1,2
1Ceramic Engineering Research Laboratory, Nagoya Institute of Technology, 10–6 Asahigaoka, Tajimi 507, Japan
2Member, the American Ceramic Society.

Tóm tắt

The thermal expansion of the skeletal framework was essentially zero for NaZr2(PO4)3‐type compounds; the interstitialion, e.g., Na+, was primarily responsible for the total thermal expansion. The composition dependence of the thermal expansion is discussed in terms of the amounts, crystallographic sites, and ionic radii of the interstitial ions. The mechanism which results in low thermal expansion was clarified, particularly for KZr2(PO4)3, in which a larger ion is substituted for Na+, and NbZr(PO4)3, which does not contain Na+. Polycrystalline ceramics formed from these crystals might be useful as thermal‐shock‐resistant materials.

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Tài liệu tham khảo

10.1111/j.1151-2916.1954.tb14037.x

10.1111/j.1151-2916.1985.tb15321.x

10.1111/j.1151-2916.1971.tb12332.x

Burdese A., 1959, Anhydrous Phosphates of Zirconia, Atti Accad. Sci. Torino, Cl. Sci. Fis., Mat. Nat., 94, 97

10.1016/0022-1902(70)80328-1

10.3891/acta.chem.scand.22-1822

10.1524/zkri.1969.130.1-6.148

Chemorukov N. G., 1978, Crystallographic Characteristics of Double Phosphates and Arsenates of Zirconium, MIIZr4(PO4)6, MIZr2(AsO4)3, and MIIZr4(AsO4)6, Sov. Phys.—Crystallogr. (Engl. Transl.), 23, 475

10.1016/0025-5408(81)90044-1

10.1111/j.1151-2916.1984.tb19516.x

10.1016/0025-5408(84)90108-9

10.1016/0025-5408(84)90258-7

10.1016/0025-5408(76)90073-8

10.1111/j.1151-2916.1980.tb10216.x

10.1007/BF02396882

10.1111/j.1151-2916.1982.tb10526.x

10.1016/0025-5408(77)90161-1

10.1016/0025-5408(76)90077-5

10.1016/0025-5408(79)90010-2

10.1016/0025-5408(79)90091-6

Desplanches G., 1980, Phase Transformation in a Na3Zr2Si2PO12 Ceramic, Bull. Am. Ceram. Soc., 59, 546

10.1016/0167-2738(80)90001-6

10.1063/1.2948578

Sakurai T., 1967, The Universal Crystallographic Computation Program System

H.Toraya; private communication.

Hazen R. M., 1977, Effects of Temperature and Pressure on Interatomic Distances in Oxygen‐Based Minerals, Am. Mineral., 62, 309

Bussem R. M., 1974, Fracture Mechanics of Ceramics, 128

10.1111/j.1151-2916.1973.tb12714.x

10.1111/j.1151-2916.1978.tb16121.x

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Journal of the American Ceramic Society

Tập 69 Số 1

1-6

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