Sintering study on commercial CeO2powder with small amount of MnO2doping

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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

54 Citations (Scopus)

Abstract

Mn-doped samples with atomic ratios equal to 0.5%, 1% and 3% were prepared by the conventional mixed-oxide method from commercial cerium oxide (CeO2) and manganese oxide (MnO2) powders. The effect of Mn doping on the densification behavior of CeO2was investigated by means of dilatometer and scanning electron microscopy (SEM). It was found that Mn doping reduced sintering temperature and promoted the grain growth dramatically. The sintering kinetics study indicated that under the isothermal sintering condition, the grain growth activation energy, Q, decreased from 731±61 kJ/mol for pure CeO2to 593±53 kJ/mol for 1% Mn-doped CeO2.
Original languageEnglish
Pages (from-to)507-512
Number of pages6
JournalMaterials Letters
Volume57
Issue number2
DOIs
Publication statusPublished - 1 Dec 2002
Externally publishedYes

Keywords

  • CeO 2
  • Ceramics
  • Ceria
  • Kinetics
  • Manganese oxide
  • Microstructure
  • Sintering

ASJC Scopus subject areas

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

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