Synthesis and structural characterization of nanocrystalline aluminium oxide

P. Madhu Kumar, Pramod Borse, V. K. Rohatgi, S. V. Bhoraskar, Prabhat Singh, Murali Sastry

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31 Citations (Scopus)

Abstract

Nanocrystalline alumina (Al2O3) powder has been synthesized by the d.c. arc plasma method at atmospheric conditions using aluminium electrodes. Structural characterization by X-ray diffraction and transmission electron microscopy confirmed the ultrafine nature of the particulates. Investigation of the size distribution revealed a long-normal behaviour of the nanoparticles. Chemical analysis of the particulates was carried out using X-ray photoemission spectroscopy. The Al 2p core level spectrum revealed the presence of unreacted Al0, in addition to Al3+, suggesting a core of Al0 surrounded by a layer of Al2O3 as the particle structure.

Original languageEnglish
Pages (from-to)354-358
Number of pages5
JournalMaterials Chemistry and Physics
Volume36
Issue number3-4
DOIs
Publication statusPublished - Jan 1994
Externally publishedYes

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