In situ observation of structural alteration process of filmy quenched carbonaceous composite

Details In situ observation of structural alteration process of filmy quenched carbonaceous composite In situ observation of structural alteration process of filmy quenched carbonaceous composite

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..251..433k&link_type=abstract

Organic Matter in Space, Proceedings of the International Astronomical Union, IAU Symposium, Volume 251, p. 433-434

Astronomy and Astrophysics

Astronomy

Methods: Laboratory, Dust, Plasmas

Scientific paper

The thermal alteration process of filmy quenched carbonaceous composite (filmy QCC) has been studied in situ by high-resolution transmission electron microscopy (HRTEM). HRTEM images of the as-prepared filmy QCC showed the typical amorphous carbon film structure. By heating above 300 °C, the structural alteration takes place. Curled graphene structure started to appear at 300 °C. Distorted onion-like structure similar to dark QCC appeared above 500 to 700 °C. The distorted onion-like structure that appears at 700 °C after heating for 30 minutes also appeared by heating at 450 °C for 2 hours.

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