Manufacturing Nano-Diphasic Materials from Natural Dolomite: In Situ Observation of Nanophase Formation Behavior

Decomposition of the mixed carbonate mineral dolomite, CaMg(CO3)2, and formation of CaO/MgO nanopolycrystals were observed in situ using a field emission scanning electron microscope with a hot stage. The pyrolysis behavior of dolomite was studied with an in situ high–temperature X–ray powder diffra...

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Veröffentlicht in:	Journal of the American Ceramic Society 1997-11, Vol.80 (11), p.2949-2955
Hauptverfasser:	Suzuki, Yoshikazu, Morgan, Peter E. D., Sekino, Tohru, Niihara, Koichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Exact sciences and technology Miscellaneous Technical ceramics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Decomposition of the mixed carbonate mineral dolomite, CaMg(CO3)2, and formation of CaO/MgO nanopolycrystals were observed in situ using a field emission scanning electron microscope with a hot stage. The pyrolysis behavior of dolomite was studied with an in situ high–temperature X–ray powder diffraction technique. Nano–sized particles formed during pyrolysis then sintered into CaO/MgO nanopolycrystals. Dense bulk–form CaO/MgO and CaZrO3/MgO nanocomposites were successfully fabricated using reactive hot–pressing from dolomite and dolomite/zirconia mixed powders, respectively.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1997.tb03218.x