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High-pressure high-temperature behavior of polymer derived amorphous B-C-N

Urheber*innen

Bhat,  Shrikant
External Organizations;

Lauterbach,  Stefan
External Organizations;

Dzivenko,  Dmytro
External Organizations;

/persons/resource/lathe

Lathe,  Christian
CGS Centre for Geological Storage, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bayarjargal,  Lkhamsuren
External Organizations;

Schwarz,  Marcus
External Organizations;

Kleebe,  Hans-Joachim
External Organizations;

Kroke,  Edwin
External Organizations;

Winkler,  Björn
External Organizations;

Riedel,  Ralf
External Organizations;

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659891.pdf
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Zitation

Bhat, S., Lauterbach, S., Dzivenko, D., Lathe, C., Bayarjargal, L., Schwarz, M., Kleebe, H.-J., Kroke, E., Winkler, B., Riedel, R. (2014): High-pressure high-temperature behavior of polymer derived amorphous B-C-N. - Journal of Physics: Conference Series, 500, Pt. 18, 182004.
https://doi.org/10.1088/1742-6596/500/18/182004


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_659891
Zusammenfassung
Dense diamond-like BCN compounds are of interest due to their extreme hardness and predicted excellent thermal and chemical stability, which are superior to those of diamond and c-BN. Here, we report on the high-pressure high-temperature (HP-HT) behavior of amorphous BC2N and BC4N – as potential precursors for HP-HT synthesis of diamond-like BCN. Prepared via hydroboration reaction of piperazine borane and pyridine borane, respectively, amorphous BC2N and BC4N are characterized by well-mixed B-N, C-C and C-N bonds, confirmed by XPS analysis. These BCN compositions were subjected to pressures between 5-12 GPa and temperatures up to 1700 °C using multi-anvil apparatus and toroid-type press. In- and ex-situ X-ray diffraction reveals the decomposition of BC4N to graphite and h-BN between 5 and 12 GPa above 500 °C, in contrast to BC2N which remains amorphous up to 1600°C.