Relationships between Microstructure and Mechanical Properties of Polycristalline Alumina

Abstract:

Some low purity alumina ceramics with an alumina content ranging from 86% to 93% were investigated, in order to explore the effects of microstructural parameters (grain size, intergranular phase) on mechanical (wear) and dielectrical parameters. The microstructure and worn surfaces were analysed using scaning electron microscopy. The correlation between microstructural, dielectrical properties and wear is discussed. It has been proposed that mechanical and electrical properties are two aspects of the same fundamental mechanism. Key words: Al2O3, Microstructure final, Wear resistance, Breakdown.

• Periodical: Applied Mechanics and Materials (Volume 625)
• Pages: 192-195
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.625.192
• Online since: September 2014
• Authors: Lillia Haddour*, Mourad Keddam, Nadir Mesrati
• Keywords: Al₂O₃, Breakdown, Microstructure Final, Wear Resistance

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