Study of 4.5%mol Y2O3-Doped ZrO2 with Submicrometer Grain Size

Eleomar Lena; Adriana Scoton Antonio Chinelatto; Adilson Luiz Chinelatto

doi:10.4028/www.scientific.net/MSF.805.570

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Oil Well Cement Developed from Common Cement: Physical, Chemical and Mineral Characterization
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Characterization of Selenium Doped Silica Gels Synthesized by Sol-Gel Method
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Study of 4.5%mol Y₂O₃-Doped ZrO₂ with Submicrometer Grain Size
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Analysis of the Y-TZP Ceramic Substucture in Blasting with Aluminum Oxide before and after Sintering
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Use of Natural Kaolinite Clay as an Adsorbent to Remove PB(II), CD(II), and CU(II) from Aqueous Solution
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Characterization of Elephant Grass Ash as a Potential Clay Ceramic Addition
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Reuse of Waste Foundry Sand from its Interaction with the Bonding Agent Sodium Silicate
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HomeMaterials Science ForumMaterials Science Forum Vol. 805Study of 4.5%mol Y2O3-Doped ZrO2 with...

Study of 4.5%mol Y₂O₃-Doped ZrO₂ with Submicrometer Grain Size

Abstract:

The aim of this study was to obtain 4.5%mol Y₂O₃-doped ZrO₂ dense with submicrometer grain size and studying the effects of using oxygen flow during calcination in the electrical properties of bodies sintered. The powders were synthesized by the Pechini method. After synthesis, the resins were dried and the calcinations were performed in air and in oxygen flow at 600°C for 2 h. The powders were pressed with 1600 MPa and sintered by Two Step Sintering (TSS) at 1500°C / 5 min and 1200°C, 1300oC, 1400°C, remaining at these temperatures for 2 and 10 hours. The sinterized samples were characterized by X-ray diffraction, apparent density, scanning electron microscopy and impedance spectroscopy. The apparent densities were greater than 94% for all conditions of calcination and sintering. The value of the activation energy was 0.7eV for the grain and 0.9 eV for the grain boundaries.