Synthesis of ultrahard fullerite with a catalytic 3D polymerization reaction of C sub(60)

3D polymerization of C sub(60) realizes under conditions of large plastic deformation at pressure 6-7 GPa and room temperature in the presence of CS sub(2). The phase of 3D-polymerized C sub(60) is identical to ultrahard fullerite synthesized from pure C sub(60) at 18 GPa pressure: in both cases, th...

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Bibliographic Details
Published in:Carbon (New York) 2014-09, Vol.76, p.250-256
Main Authors: M, Popov, V, Mordkovich, S, Perfilov, A, Kirichenko, B, Kulnitskiy, I, Perezhogina, V, Blank
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Carbon
Catalysis
Fullerenes
Phase transformations
Plastic deformation
Polymerization
Three dimensional
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Summary:3D polymerization of C sub(60) realizes under conditions of large plastic deformation at pressure 6-7 GPa and room temperature in the presence of CS sub(2). The phase of 3D-polymerized C sub(60) is identical to ultrahard fullerite synthesized from pure C sub(60) at 18 GPa pressure: in both cases, the samples plough diamond during the rotation of the sample in a shear diamond anvil cell, bulk module is 585 GPa, and a sequence of phase transitions preceding to ultrahard phase is also the same in both cases (in the presence of CS sub(2), the phase transitions take place at lower pressures than in pure C sub(60)). Raman and transmission microscope studies confirm the structure equivalence of samples of both types. The absence of sulfur in the structure of ultrahard fullerite synthesized in the presence of CS sub(2) proves the catalysis role of CS sub(2) in the 3D polymerization of C sub(60).
ISSN:0008-6223
DOI:10.1016/j.carbon.2014.04.075