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- W2146224527 abstract "In the ZrO2-Cr2O3 system, metastable t-ZrO2 solid solutions containing up to 11 mol% Cr2O3 crystallize at low temperatures from amorphous materials prepared by the hydrazine method. The lattice parameter c decreases linearly from 0.5149 to 0.5077 nm with increased Cr2O3 content, whereas the lattice parameter a is a constant value (a= 0.5077 nm) regardless of the starting composition. At higher temperatures, transformation (decomposition) of the solid solutions proceeds in the following way: t(ss)→t(ss) +m+ Cr2O3→m+ Cr2O3. Above 11 mol% Cr2O3 addition, c-ZrO2 phases are formed in the presence of Cr2O3. The t-ZrO2 solid solution powders have been characterized for particle size, shape, and surface area. They consist of very fine particles (15–30 nm) showing thin platelike morphology. Dense ZrO2(3Y)-Cr2O3 composite ceramics (∼99.7% of theoretical) with an average grain size of 0.3 μm have been fabricated by hot isostatic pressing for 2 h at 1400°C and 196 MPa. Their fracture toughness increases with increased Cr2O3 content. The highest KIc value of 9.5 MPa·;m1/2 is achieved in the composite ceramics containing 10 mol% Cr2O3." @default.
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- W2146224527 date "1996-01-01" @default.
- W2146224527 modified "2023-09-24" @default.
- W2146224527 title "Formation, Characterization, and Hot Isostatic Pressing of Cr2O3-Doped ZrO2 (0,3 mol% Y2O3) Prepared by Hydrazine Method" @default.
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- W2146224527 doi "https://doi.org/10.1111/j.1151-2916.1996.tb07895.x" @default.
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