Characterization of ultra fine alumina powder produced by wet milling

Conference · Fri Sep 01 00:00:00 EDT 1995

OSTI ID:99113

Hofius, H ^[1]; Hofmann, H ^[2]; Foerster, H ^[3]

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1. Martinswerk GmbH, Bergheim (Switzerland)
2. Ecole Polytechnique Federale de Lausanne (Switzerland)
3. Institut fuer Mineralogie und Lagerstaettenlehre, Aachen (Switzerland)

Different raw alumina powders were wet milled in a ball mill and in an attrition mill. The influence of the raw material properties as well as the milling parameters on the properties of the final product was investigated by chemical analysis, XRD, surface characterization and sintering experiments. The results show the synthesis of nanoscaled powder with a specific surface area {ge} 50 m{sup 2}/g can be achieved by wet milling. In addition domains with diameters of a few nm could be detected by XRD. The sintering temperature could be lowered from 1650{degrees}C to 1424{degrees}C. The hydration of {alpha}-Al{sub 2}O{sub 3}, will also be discussed.

• OSTI ID: 99113
• Report Number(s): CONF-940911-; TRN: 95:005310-0003
• Resource Relation: Conference: 5. international conference on ceramic processing science and technology, Friedrichshafen (Germany), 11-14 Sep 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic transactions: Ceramic processing science and technology. Volume 51; Hausner, H.; Messing, G.L.; Hirano, Shin-ichi [eds.]; PB: 835 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
PROCESSING
CHEMICAL ANALYSIS
SINTERING
SPECIFIC SURFACE AREA
POWDERS
MILLING
GRINDING