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Morphological and phase composition changes during sintering of ultralight Al2O3TiO2 foams

  • M. Mann (a1), G. E. Shter (a1) and G. S. Grader (a1)
Abstract

The morphological and phase composition changes during sintering of ultralight pure Al2O3 and Al2O3/TiO2 foams were investigated in the temperature range of 900–1600 °C in air. The titania (10 wt%) was incorporated during a nonhydrolytic foaming procedure to facilitate its uniform dispersion in the alumina matrix. The changes of linear shrinkage and related changes in effective density and porosity demonstrate a higher reactivity in the Al2O3/TiO2 foam. The formation of tialite phase in the Al2O3/TiO2 foams occurred below 1300 °C and remained stable during cooling under 1200 °C without stabilizers.

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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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