Large scale synthesis of non-transformable tetragonal Sc2O 3, Y2O3 doped ZrO2 nanopowders via the citric acid based gel method to obtain plasma sprayed coating

Mohammad Reza Loghman-Estarki, Hossein Edris, Reza Shoja Razavi

Research output: Journal PublicationArticlepeer-review

29 Citations (Scopus)

Abstract

Non-transformable tetragonal scandia, yttria doped zirconia (SYDZ) nanopowders were prepared in large scale by the citric acid (CA) based gel method. The effect of ethylene glycol monobutyl ether (EGM):CA ratios and pH on the structure, morphology and SYDZ particle size was investigated. The microstructure of SYDZ was characterized by XRD, Raman scattering, TG-DTA, SEM, TEM, and FTIR analyses. The SYDZ nanopowders, synthesized with 1Zr 4+:4EGM:4CA mole ratio in acidic medium (pH ∼1) at 700° C, had an average diameter of 15±2 nm. Finally, air plasma spray (APS) coatings were produced from nanostructured SYDZ agglomerated powders.

Original languageEnglish
Pages (from-to)7817-7829
Number of pages13
JournalCeramics International
Volume39
Issue number7
DOIs
Publication statusPublished - Sept 2013
Externally publishedYes

Keywords

  • A. Sol-gel
  • Metastable tetragonal
  • Zirconia based ceramics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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