Formation of Compressed and Mixed-Layered Graphite on Heating Impact Diamonds Научная публикация
Журнал |
Journal of Structural Chemistry
ISSN: 0022-4766 , E-ISSN: 1573-8779 |
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Вых. Данные | Год: 2018, Том: 59, Номер: 2, Страницы: 355-364 Страниц : 10 DOI: 10.1134/S0022476618020142 | ||||||
Ключевые слова | impact diamond diamond lonsdaleite graphite compressed graphite mixed-layered graphite turbostratic disordering simulation | ||||||
Авторы |
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Организации |
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Реферат:
The graphitization process of impact diamonds in the helium atmosphere at 1900–1960 °C is investigated. It is shown that when an impact diamond particle with a large number of lonsdaleite defects is kept at 1900 °C for 1 min, ~5 wt.% of graphite are formed (in the paralle experiment with a particle without lonsdaleite defects the graphite formation is not observed). With an increase in the temperature to 1930 °С and 1940 °С the graphite amount increases to 70 wt.% and 80 wt.% respectively. In both cases, a mixture of two graphite phases forms: the first is turbostratic graphite with d002 = 3.38 Å; the second is compressed graphite with d002 = 3.21 Å. On heating a particle to 1960 °C graphite is formed in which the layer packing contains a large amount of defects and is a mixture of 2Н and 3R polytypes (the ratio 40:60) with a small degree of turbostratic disordering.
Библиографическая ссылка:
Gromilov S.A.
, Nikolaev R.E.
, Cherepanova S.V.
Formation of Compressed and Mixed-Layered Graphite on Heating Impact Diamonds
Journal of Structural Chemistry. 2018. V.59. N2. P.355-364. DOI: 10.1134/S0022476618020142 WOS Scopus РИНЦ
Formation of Compressed and Mixed-Layered Graphite on Heating Impact Diamonds
Journal of Structural Chemistry. 2018. V.59. N2. P.355-364. DOI: 10.1134/S0022476618020142 WOS Scopus РИНЦ
Оригинальная версия:
Громилов С.А.
, Николаев Р.Е.
, Черепанова С.В.
Образование "сжатого" и смешаннослойного графита при нагревании импактных алмазов
Журнал структурной химии. 2018. Т.59. №2. С.368-377. DOI: 10.26902/jsc20180214 RSCI РИНЦ
Образование "сжатого" и смешаннослойного графита при нагревании импактных алмазов
Журнал структурной химии. 2018. Т.59. №2. С.368-377. DOI: 10.26902/jsc20180214 RSCI РИНЦ
Даты:
Поступила в редакцию: | 17 мая 2017 г. |
Опубликована в печати: | 1 мар. 2018 г. |
Опубликована online: | 3 июл. 2018 г. |
Идентификаторы БД:
Web of science | WOS:000434477700014 |
Scopus | 2-s2.0-85048169376 |
РИНЦ | 35761532 |
Chemical Abstracts | 2018:1096785 |
OpenAlex | W2794964695 |