{"title":"New Highly-Scalable Carbon Nanotube-Reinforced Glasses and Ceramics ","authors":"Konstantinos G. Dassios, Guillaume Bonnefont, Gilbert Fantozzi, Theodore E. Matikas, Costas Galiotis ","volume":104,"journal":"International Journal of Materials and Metallurgical Engineering","pagesStart":970,"pagesEnd":976,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10001812","abstract":"
We report herein the development and preliminary mechanical characterization of fully-dense multi-wall carbon nanotube (MWCNT)-reinforced ceramics and glasses based on a completely new methodology termed High Shear Compaction (HSC). The tubes are introduced and bound to the matrix grains by aid of polymeric binders to form flexible green bodies which are sintered and densified by spark plasma sintering to unprecedentedly high densities of 100% of the pure-matrix value. The strategy was validated across a PyrexTM glass \/ MWCNT composite while no identifiable factors limit application to other types of matrices. Nondestructive evaluation, based on ultrasonics, of the dynamic mechanical properties of the materials including elastic, shear and bulk modulus as well as Poisson’s ratio showed optimum property improvement at 0.5 %wt tube loading while evidence of nanoscalespecific energy dissipative characteristics acting complementary to nanotube bridging and pull-out indicate a high potential in a wide range of reinforcing and multifunctional applications. <\/p>\r\n","references":"[1] Iijima, S., \u201cHelical Microtubules of Graphitic Carbon,\u201d Nature,\r\n354(6348), 56-58 (1991).\r\n[2] Treacy, M. M. J., Ebbesen, T. W., and Gibson, J. M., \u201cExceptionally\r\nhigh Young's modulus observed for individual carbon nanotubes,\u201d\r\nNature, 381(6584), 678-680 (1996).\r\n[3] Yu, M. F., Lourie, O., Dyer, M. J. et al., \u201cStrength and breaking\r\nmechanism of multiwalled carbon nanotubes under tensile load,\u201d\r\nScience, 287(5453), 637-640 (2000).\r\n[4] Balandin, A. 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