Abstract
Fullerite derivatives synthesized with a catalytic polymerization reaction at a relatively low-pressure range of 0.5–4 GPa show unique mechanical properties: elastic recovery is 98% and hardness possibly approaches 100 GPa. Structure of the samples is also unique: one composes from fragments of C60 molecules linked by the covalent bonds. To obtain the homogeneous crack-free samples, we synthesized B4C–fullerite derivatives composite which show a 550 MPa flexural stress, a 2250 MPa compressive strength, and a 28 GPa hardness and have density of 2.2 g/cm3.
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Acknowledgments
We thank Mrs. Solov’eva and Mr. Illich-Svitych for the mechanical tests and Mr. Ivanov for the SEM study of the scratches. This work was supported by the Ministry of Education and Science of the Russian Federation, basic program for the National University of Science and Technology MISiS and grant 14.577.21.0094 (ID project RFMEFI57714X0094); the work was done using the equipment of Joint Research Center ‘Material Science and Metallurgy’ of NUST MISiS.
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Popov, M., Blank, V., Perfilov, S. et al. Unique mechanical properties of fullerite derivatives synthesized with a catalytic polymerization reaction. MRS Communications 5, 71–75 (2015). https://doi.org/10.1557/mrc.2015.4
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DOI: https://doi.org/10.1557/mrc.2015.4