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Microstructure of Mullite/ZrO2 and Mullite/Al2O3/ZrO2 tough ceramic composites

✍ Scribed by J.M. Rincon; T.R. Dinger; G. Thomas; J.S. Moya; M.I. Osendi

Publisher
Elsevier Science
Year
1987
Weight
633 KB
Volume
35
Category
Article
ISSN
0001-6160

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✦ Synopsis

The microstructural evolution in mullite/zirconia and mullite/alumina/zirconia composites after different duration heat treatments at 1570Β°C has been investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray microanalysis. The effect of free alumina on microstructural and mechanical parameters is also reported.

RCsum&Nous avons Btuditr par microscopies Clectroniques B balayage et en transmission, et par microanalyse X en dispersion d'tnergie, 1'Cvolution microstructurale des composites mullite/zircone et mullite/alumine/zircone, aprks des traitements thermiques de diffkrentes duries B 1570Β°C. Nous rapportons igalement l'effet de l'alumine libre sur les paramttres microstructuraux et mCcaniques.

Zusammenfassung-Die

Entwicklung der Mikrostruktur in den Werkstoffen Mullit/Zirkonia und Mullit/Zirkonia/Alumina bei verschieden langen Wlrmebehandlungen bei 1570Β°C wurde mittels Rasterund Durchstrahlungselektronenmikroskopie einschliel3lich der energiedispersiven Riintgen-Mikroanalyse untersucht. AuBerdem wird der EinfluB von freiem Alumina auf die mikrostrukturellen und mechanischen Parameter dargestellt.

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