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- W2605393695 abstract "It is well-known that 2 to 3 mol%Y2O3-ZrO2 has high toughness because of the stress-induced tranrformation from the tetragonal to the monoclinic phase. In the present investigation on the mechanical properties of 2 and 3 mol%Y2O3 bearing partially stabilized ZrO2 (Y-PSZ) prepared with coprecipitation powders, it was found that the maximum toughness was obtained by sintering for several hundred ks at 1573 K. In order to understand this, structural analysis was performed by means of TEM-EDS and XRD. Results obtained are as follows: (a) In the specimen sintered at 1573 K for 3.6 ks, each grain consisted of an almost average composition of the specimen. (b) After prolonged sintering the grain size was kept under 1 μm, but the composition of each grain began to change continuously toward the equilibrium values of the tetragonal or cubic phase alternatively. This type of phase separation in ultra-fine polycrystals is considered to be spinodal decomposition without modulated structure. (c) With the decrease of Y2O3 content in the tetragonal phase, the stability of Y-PSZ decreased and consequently the toughness changed." @default.
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- W2605393695 date "1987-01-01" @default.
- W2605393695 modified "2023-09-26" @default.
- W2605393695 title "Effect of Sintering Time on the Stability of Y<SUB>2</SUB>O<SUB>3</SUB> Partially Stabilized Zirconia" @default.
- W2605393695 doi "https://doi.org/10.2320/jinstmet1952.51.8_769" @default.
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