Email this article A ceramic nanocomposite with enhanced hardness based on corundum modified with carbon
- Authors: Ponomarev O.V.1,2, Popov M.Y.1,2,3, Tyukalova E.V.1,2, Blank V.D.1,2,3
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Affiliations:
- Technological Institute for Superhard and Novel Carbon Materials
- Moscow Institute of Physics and Technology (State University)
- National University of Science and Technology MISiS
- Issue: Vol 42, No 11 (2016)
- Pages: 1064-1066
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/201860
- DOI: https://doi.org/10.1134/S1063785016110067
- ID: 201860
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Abstract
Results of examination of the effect of modifying the grain boundaries of nanostructured corundum with carbon nanoclusters on the nanocomposite hardness are reported. The nanocomposite hardness was found to be increased to 28 GPa. This value is substantially higher than the hardness of single-crystal corundum at any crystallographic plane (23 GPa). Carbon was present at grain boundaries in the obtained nanocomposite owing to the fact that this nanocomposite was sintered from clusters containing corundum nanograins coated with several C60 layers. The structure of samples was investigated by transmission electron microscopy and Raman spectroscopy, and their hardness was measured by indenting and scratch testing.
About the authors
O. V. Ponomarev
Technological Institute for Superhard and Novel Carbon Materials; Moscow Institute of Physics and Technology (State University)
Author for correspondence.
Email: oleg.ponomarev@phystech.edu
Russian Federation, Troitsk, Moscow, 142190; Dolgoprudny, Moscow oblast, 141700
M. Yu. Popov
Technological Institute for Superhard and Novel Carbon Materials; Moscow Institute of Physics and Technology (State University); National University of Science and Technology MISiS
Email: oleg.ponomarev@phystech.edu
Russian Federation, Troitsk, Moscow, 142190; Dolgoprudny, Moscow oblast, 141700; Moscow, 119049
E. V. Tyukalova
Technological Institute for Superhard and Novel Carbon Materials; Moscow Institute of Physics and Technology (State University)
Email: oleg.ponomarev@phystech.edu
Russian Federation, Troitsk, Moscow, 142190; Dolgoprudny, Moscow oblast, 141700
V. D. Blank
Technological Institute for Superhard and Novel Carbon Materials; Moscow Institute of Physics and Technology (State University); National University of Science and Technology MISiS
Email: oleg.ponomarev@phystech.edu
Russian Federation, Troitsk, Moscow, 142190; Dolgoprudny, Moscow oblast, 141700; Moscow, 119049
