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|Title:||Nanostructured ceramics via microemulsion processing routes|
|Authors:||Wang, J. |
|Source:||Wang, J.,Lim, G.K.,Ong, C.L.,Ng, S.C.,Chew, C.H.,Gan, L.M. (1997). Nanostructured ceramics via microemulsion processing routes. Key Engineering Materials 132-136 (Pt 1) : 8-11. ScholarBank@NUS Repository.|
|Abstract:||Several nanosized ceramic powders, including hydroxyapatite, doped and undoped zirconia, ferrites, lead titanate and lead zirconate, have been prepared via both inverse and bicontinuous microemulsion processing routes. Coprecipitation reactions take place in the nanosized aqueous domains when two microemulsions of appropriate composition are mixed together, forming nanosized precursor particles, such as hydroxide and oxalate. Ultrafine ceramic powders are then obtained by calcining the microemulsion-derived precursors. Processing parameters which have been shown to affect the characteristics of the resulting ceramic powders include the salt concentration in aqueous phase, weight percentage of the aqueous phase in the microemulsion, and types of oil and surfactant phases. Nanostructured ceramic materials are fabricated by sintering the microemulsion-derived ceramic powder compacts at a temperature of 100 to 200 °C lower than those required by the powder compacts prepared via many other processing routes.|
|Source Title:||Key Engineering Materials|
|Appears in Collections:||Staff Publications|
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