The influence of sintering on the dispersion of carbon nanotubes in ceramic matrix composites

Tapasztó, Orsolya and Hartmut, Lemmel and Markó, Márton and Balázsi, Katalin and Balázsi, Csaba and Tapasztó, Levente (2014) The influence of sintering on the dispersion of carbon nanotubes in ceramic matrix composites. CHEMICAL PHYSICS LETTERS, 614. pp. 148-150. ISSN 0009-2614

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Abstract

Optimizing the dispersion of carbon nanostructures in ceramic matrix composites is a fundamental tech- nological challenge. So far most efforts have been focused on improving the dispersion of nanostructures during the powder phase processing, due to the limited information and control on their possible redis- tribution during the sintering. Here, we address this issue by comparing multi-walled carbon nanotubes reinforced Si 3 N 4 composites prepared from the same starting powder dispersion but sintered using two different techniques. We employ ultra-small angle neutron scattering measurements to gain reliable information on the dispersion of nanostructures allowing a direct comparison of their redistribution during the sintering.

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