Structural and mechanical properties of milled Si3N4/cnts composites by spark plasma sintering method

Balázsi, Csaba and Tapasztó, Orsolya and Károly, Zoltán and Kun, Péter and Balázsi, Katalin and Szépvölgyi, János (2013) Structural and mechanical properties of milled Si3N4/cnts composites by spark plasma sintering method. Materials Science Forum, 729. pp. 31-36. ISSN 0255-5476

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Abstract

Multiwall carbon nanotubes were dispersed with a concentration of 3wt% in silicon nitride ceramic host. A high efficiency attritor mill has been used for an effective dispersion of the filler phase in the matrix. In this work we have developed a spark plasma sintering process (SPS) suitable to consolidate and tailor the microstructure of CNT-reinforced silicon nitride-based ceramic composites. Mechanical measurements, micro-indentation investigations of the hardness and fracture toughness have been performed. Scanning electron microscopy has been involved in order to reveal the microstructure of the resulting composites.

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