Rapid synthesis of functional oxides by electric discharge assisted mechanical milling method

Authors

A Calka, University of WollongongFollow
A A. Chowdhury, University of WollongongFollow
Konstantin Konstantinov, University of WollongongFollow

RIS ID

67851

Publication Details

Calka, A., Chowdhury, A. A. & Konstantinov, K. (2012). Rapid synthesis of functional oxides by electric discharge assisted mechanical milling method. Journal of Alloys and Compounds, 536 (Supplement 1), S3-S8.

Abstract

Here we report application of an electric discharge assisted mechanical milling (EDAMM) technique to synthesize various functional oxides. In this work we studied the effect of electric discharge milling conditions such as AC and DC discharges in helium, argon, nitrogen and oxygen on synthesis of complex oxide MgAl₂O₄ (i) from pre-mixed oxides as starting materials and (ii) from elemental powders by oxidation in oxygen plasma. Also a compound BaLa₂Ti₄O₁₂ and CaCu₃Ti₄O₁₂ was synthesized from elemental oxides by EDAMM and EDAMM and subsequent annealing, respectively. All samples were characterized using X-ray analysis. SEM was performed on MgAl₂O₄ samples and DTA on nanostructural CaCu₃Ti₄O₁₂. By using EDAMM, single phase multi-element oxides can be formed in as little as 0.1% of the processing time required in conventional solid-state techniques.