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Calculation of Phase Equilibria in the Y2O3-Yb2O3-ZrO2 SystemRare earth oxide stabilized zirconias find a wide range of applications. An understanding of phase equilibria is essential to all applications. In this study, the available phase boundary data and thermodynamic data is collected and assessed. Calphad-type databases are developed to completely describe the Y2O3-ZrO2, Yb2O3-ZrO2, and Y2O3-Yb2O3 systems. The oxide units are treated as components and regular and subregular solution models are used. The resultant calculated phase diagrams show good agreement with the experimental data. Then the binaries are combined to form the database for the Y2O3-Yb2O3-ZrO2 psuedo-ternary.
Document ID
20020024444
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Jacobson, Nathan S. (NASA Glenn Research Center Cleveland, OH United States)
Liu, Zi-Kui (Pennsylvania State Univ. State College, PA United States)
Kaufman, Larry (Kaufman (Larry) Brookline, MA United States)
Zhang, Fan (CompuTherm, LLC Madison, WI United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2001
Subject Category
Solid-State Physics
Meeting Information
Meeting: Electrochemical Society Centennial Meeting
Location: Philadelphia, PA
Country: United States
Start Date: May 12, 2002
End Date: May 17, 2002
Sponsors: Electrochemical Society, Inc.
Funding Number(s)
PROJECT: RTOP 714-04-60
CONTRACT_GRANT: NSF DMR-99-83532
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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