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Nouri, Esmaiel, Shahmiri, Mohammad, Rezaie, Hamid Reza, Talayian, Fatemeh. (1391). The effect of alumina content on the structural properties of ZrO2-Al2O3 unstabilized composite nanopowders. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(1), 124-131. doi: https://doi.org/10.1186/2228-5547-3-17
Esmaiel Nouri; Mohammad Shahmiri; Hamid Reza Rezaie; Fatemeh Talayian. "The effect of alumina content on the structural properties of ZrO2-Al2O3 unstabilized composite nanopowders". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3, 1, 1391, 124-131. doi: https://doi.org/10.1186/2228-5547-3-17
Nouri, Esmaiel, Shahmiri, Mohammad, Rezaie, Hamid Reza, Talayian, Fatemeh. (1391). 'The effect of alumina content on the structural properties of ZrO2-Al2O3 unstabilized composite nanopowders', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 3(1), pp. 124-131. doi: https://doi.org/10.1186/2228-5547-3-17
Nouri, Esmaiel, Shahmiri, Mohammad, Rezaie, Hamid Reza, Talayian, Fatemeh. The effect of alumina content on the structural properties of ZrO2-Al2O3 unstabilized composite nanopowders. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1391; 3(1): 124-131. doi: https://doi.org/10.1186/2228-5547-3-17

The effect of alumina content on the structural properties of ZrO2-Al2O3 unstabilized composite nanopowders

International Journal of Industrial Chemistry
دوره 3، شماره 1، اسفند 2012، صفحه 124-131
نوع مقاله: research article
شناسه دیجیتال (DOI): https://doi.org/10.1186/2228-5547-3-17
نویسندگان
Esmaiel Nouri* 1؛ Mohammad Shahmiri1؛ Hamid Reza Rezaie1؛ Fatemeh Talayian2
1Department of Materials and Metallurgical Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, 16846-13114, Iran
2Department of Materials Engineering, Sahand University of Technology, Tabriz, 11111-53317, Iran
چکیده
In this research, a sol–gel process was used to synthesize zirconia-alumina (ZrO2-Al2O3) composite nanopowders containing 10, 20, and 50 mol% alumina (Al2O3) without any stabilizer. Zirconium acetate hydroxide and aluminum isopropoxide were employed as precursors. The produced composite nanopowders were characterized using a Brunauer-Emmett-Teller (BET) surface area analyzer, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric/differential thermal analysis, X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The BET results showed a decrease in surface area and average particle size and an increase in pore size with increasing Al2O3 content. FTIR, in corroboration with XRD, confirms the crystallization of corundum (α-Al2O3) as one of the alumina phases. The X-ray studies showed that an increase in Al2O3 content shifted the tetragonal zirconia (t-ZrO2)-phase crystallization to higher temperatures. Microstructural characterization by SEM depicted that the particles tend to be more agglomerated with increasing Al2O3 content.
کلیدواژه‌ها
Sol–gel process؛ Heat treatment؛ ZrO2-Al2O3 composite nanopowders؛ α-Al2O3؛ t-ZrO2
آمار
تعداد مشاهده مقاله: 37


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