Phase distribution in the HfO2Er2O3Ta2O5 system

The cubic (c-ZrO,) and tetragonal zirconia (t-ZrO,) phase stability regions in the system ZrO2-Y2O3-Ta2O5 were delineated. The c-Zr02 solid solutions are formed with the fluorite structure. The t-ZrO, solid solutions having a c/u axial ratio (tetragonality) smaller than 1.0203 display high fracture toughness (5 to 14 MPa-m"'), and their instability/ transformability to monoclinic zirconia (m-ZrO,) increases with increasing tetragonality. On the other hand, the t-ZrO, solid solutions stabilized at room temperature with tetragonality greater than 1.0203 have low toughness values (2 to 5 MPa * m"'), and their transformability is not related to the tetragonality. [

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Phase distribution in the HfO2Er2O3Ta2O5 system

Cited by 2 publications

References 10 publications

Formation of the fluorite phase and other related phases in the system Y2O3–Ta2O5–MO (M-Mg, Ca, Sr or Ba)

Formation of the fluorite phase and other related phases in the system Y2O3–Ta2O5–MO (M-Mg, Ca, Sr or Ba)

Phase Stability and Physical Properties of Cubic and Tetragonal ZrO₂ in the System ZrO₂–Y₂O₃–Ta₂O₅

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Phase distribution in the HfO2Er2O3Ta2O5 system

Cited by 2 publications

References 10 publications

Formation of the fluorite phase and other related phases in the system Y2O3–Ta2O5–MO (M-Mg, Ca, Sr or Ba)

Formation of the fluorite phase and other related phases in the system Y2O3–Ta2O5–MO (M-Mg, Ca, Sr or Ba)

Phase Stability and Physical Properties of Cubic and Tetragonal ZrO2 in the System ZrO2–Y2O3–Ta2O5

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Phase Stability and Physical Properties of Cubic and Tetragonal ZrO₂ in the System ZrO₂–Y₂O₃–Ta₂O₅