High-temperature mechanical properties and chemical stability of Ba[sub 1+x]Zr[sub 4]P[sub 6[minus]2x]Si[sub 2x]O[sub 24] low-thermal expansion ceramics
- Pennsylvania State Univ., University Park, PA (United States). Materials Research Lab.
- LoTEC, Inc., West Valley City, UT (United States)
The NaZr[sub 2]P[sub 3]O[sub 12] (NZP) family of materials is attracting increasing attention due to its low-thermal-expansion behavior. The system Ba[sub 1+x]Zr[sub 4]P[sub 6[minus]2x]Si[sub 2x]O[sub 24] (0 [le] x [le] 1), belonging to the NZP family, shows ultralow thermal expansion over a wide temperature range. It also shows anisotropy in its lattice thermal expansion. This causes microcracking as the sintered specimens are cooled, which results in degradation of the mechanical properties. In this work, the chemical stability, strength, and Young's modulus of Ba[sub 1+x]Zr[sub 4]P[sub 6[minus]2x]O[sub 24] (x = 0.25 and 0.5) ceramics at high temperatures have been determined. An attempt has been made to correlate the mechanical properties to the thermal expansion anisotropy.
- OSTI ID:
- 6888943
- Journal Information:
- Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:7; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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Thermal and mechanical behavior of Ba{sub 1+x}Zr{sub 4}P{sub 6{minus}2x}Si{sub 2x}O{sub 24}
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360203* -- Ceramics
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ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
DATA
EXPANSION
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
INFORMATION
MATERIALS
MECHANICAL PROPERTIES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
SILICON COMPOUNDS
SILICON OXIDES
STABILITY
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES