期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 102, 期 8, 页码 4848-4861出版社
WILEY
DOI: 10.1111/jace.16271
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资金
- Division of Materials Research [DMR 1835848]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1835848] Funding Source: National Science Foundation
The previously unknown experimental HfO2-Ta2O5-temperature phase diagram has been elucidated up to 3000 degrees C using a quadrupole lamp furnace and conical nozzle levitator system equipped with a CO2 laser, in conjunction with synchrotron X-ray diffraction. These in-situ techniques allowed the determination of the following: (a) liquidus, solidus, and invariant transformation temperatures as a function of composition from thermal arrest experiments, (b) determination of equilibrium phases through testing of reversibility via in-situ X-ray diffraction, and (c) molar volume measurements as a function of temperature for equilibrium phases. From these, an experimental HfO2-Ta2O5-temperature phase diagram has been constructed which is consistent with the Gibbs Phase Rule.
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