Morphological and phase composition changes during sintering of ultralight Al2O3/TiO2 foams

Morphological and phase composition changes during sintering of ultralight Al2O3/TiO2 foams

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 percent) was incorporated during a nonhydrolytic foaming procedure to facilitate its uniform dispersion i...

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Veröffentlicht in:Journal of materials research 2002-04, Vol.17 (4), p.831-837
Hauptverfasser: Mann, M, Shter, G E, Grader, G S
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Grader, G S
description 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 percent) 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. (Author)
doi_str_mv 10.1557/JMR.2002.0121
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title Morphological and phase composition changes during sintering of ultralight Al2O3/TiO2 foams
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