Sintering and densification behavior of Mn-doped CeO2

Zhang Tianshu, Peter Hing, Haitao Huang, J. Kilner

Research output: Journal article publicationJournal articleAcademic researchpeer-review

61 Citations (Scopus)

Abstract

The effect of Mn doping on sintering and densification behavior of commercial CeO2powder has been investigated in this study. The results from both X-ray diffraction (XRD) and thermal gravimetric-differential thermal analysis methods indicate no binary compounds are formed between CeO2and MnO2, and Mn element exists in the state of Mn2+(i.e. MnO) in the samples sintered above 1200°C. Dilatometer measurement and scanning electron microscopy observation confirm that small amount of Mn doping reduces sintering temperature dramatically and promotes grain boundary mobility. About 1% Mn-doped CeO2sintered at 1300°C for 2 h reaches almost full densification (>99.0% of relative density), compared with ∼96% of relative density for pure CeO2sintered at 1525°C for 2 h, and both samples have almost the same grain size.
Original languageEnglish
Pages (from-to)235-241
Number of pages7
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume83
Issue number1-3
DOIs
Publication statusPublished - 21 Jun 2001
Externally publishedYes

Keywords

  • Ceramic
  • Ceria
  • Microstructure
  • Sintering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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