Chernogorova, O. P. and Bul`enkov, N. A. and Blinov, V. M. (2008) Structure and properties of the superelastic and hard carbon particles reinforcing wear-resistant composite materials obtained from mixtures of iron and fullerene powders under pressure. Nanotechnologies in Russia, Volume 3 (5-6). pp. 344-351.
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The structure and mechanical properties of hard and superelastic carbon particles formed at a pressure of 5 GPa at 12001400°C upon the consolidation of metal-fullerene powder mixture into a composite material have been studied by optical microscopy, high-resolution electron microscopy, nanoindentation, etc. The reinforcing carbon particles are characterized by an elastic hardness of up to 15 GPa, a high elastic recovery (8090%), an elastic modulus of 6090 GPa, a low density (about 2 g/cm3), and a high cracking resistance. The particles are X-ray amorphous, but they inherit the pattern of the initial fullerite crystals. The metallic composite materials reinforced by the hard and superelastic carbon particles in abrasive resistance surpass the well-known wear-resistant steels by an order of magnitude and approach diamond-like coatings in their friction coefficients (about 0.12).
|Subjects:||Material Science > Functional and hybrid materials|
Material Science > Nanostructured materials
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||19 Dec 2008 13:15|
|Last Modified:||01 Feb 2009 20:37|
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