<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Pechini process was used for preparation of three kinds of nanocrystalline powders of yttria-stabilized zirconia (YSZ): doped with 1.5 mol% nickel oxide, doped with 15 mol% ceria, and doped with 1.5 mol% nickel oxide plus 15 mol% ceria. Zirconium chloride, yttrium nitrate, cerium nitrate, nickel nitrate, citric acid and ethylene glycol were polymerized at 80 °C to produce a gel. XRD, SEM and TEM analyses were used to investigate the crystalline phases and microstructures of obtained compounds. The results of XRD revealed the formation of nanocrystalline powder at 900 °C. Morphology of the powder calcined at 900 °C, examined with a scanning electron microscope, showed that the presence of nickel and cerium inhibited the grain growth in the system. The average crystallite size of the material doped with nickel oxide (9.33 nm) was bigger than the one doped with cerium oxide (9.29 nm), while the YSZ doping with the two oxides simultaneously promoted the grain growth with crystallite size of 11.37 nm. Yttria-stabilized zirconia powder with a mean crystallite size of 9.997 nm was prepared successfully by this method.</p></abstract>

Pechini process was used for preparation of three kinds of nanocrystalline powders of yttria-stabilized zirconia (YSZ): doped with 1.5 mol% nickel oxide, doped with 15 mol% ceria, and doped with 1.5 mol% nickel oxide plus 15 mol% ceria. Zirconium chloride, yttrium nitrate, cerium nitrate, nickel nitrate, citric acid and ethylene glycol were polymerized at 80 °C to produce a gel. XRD, SEM and TEM analyses were used to investigate the crystalline phases and microstructures of obtained compounds. The results of XRD revealed the formation of nanocrystalline powder at 900 °C. Morphology of the powder calcined at 900 °C, examined with a scanning electron microscope, showed that the presence of nickel and cerium inhibited the grain growth in the system. The average crystallite size of the material doped with nickel oxide (9.33 nm) was bigger than the one doped with cerium oxide (9.29 nm), while the YSZ doping with the two oxides simultaneously promoted the grain growth with crystallite size of 11.37 nm. Yttria-stabilized zirconia powder with a mean crystallite size of 9.997 nm was prepared successfully by this method.

Synthesis of nanocrystalline Ni/Ce-YSZ powder via a polymerization route

Department of Materials Engineering, Science & Research Branch, Islamic Azad University, Tehran, Iran

Department of Metallurgical and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran

Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, Canada

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Synthesis of nanocrystalline Ni/Ce-YSZ powder via a polymerization route"}

Pechini process was used for preparation of three kinds of nanocrystalline powders of yttria-stabilized zirconia (YSZ): doped with 1.5 mol% nickel oxide, doped...

Synthesis of nanocrystalline Ni/Ce-YSZ powder via a polymerization route

Publié en ligne: 29 août 2013

Pages: 343 - 349

DOI: https://doi.org/10.2478/s13536-013-0113-9

Mots clés
yttria-stabilized zirconia, Pechini method, nanocrystalline Ni/Ce-YSZ powder, dopant

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Synthesis of nanocrystalline Ni/Ce-YSZ powder via a polymerization route

Publié en ligne: 29 août 2013

Pages: 343 - 349

DOI: https://doi.org/10.2478/s13536-013-0113-9

Mots clésyttria-stabilized zirconia, Pechini method, nanocrystalline Ni/Ce-YSZ powder, dopant

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
yttria-stabilized zirconia, Pechini method, nanocrystalline Ni/Ce-YSZ powder, dopant