ОСОБЛИВОСТІ НАПРАВЛЕНОГО РОСТУ МОНОКРИСТАЛІВ АЛМАЗУ В СИСТЕМІ Fe-Co-Mg-C

The features of growing type Ib diamond single crystals in the Fe-Co-Mg-C solution-melt system by the temperature gradient method in a six-punch high-pressure apparatus CS-VII at a pressure of 6.0–6.2 GPa and a temperature of 1500–1750 °C have been investigated; the concentration intervals of the fo...

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Datum:2022
Hauptverfasser: Коваленко, Т. В., Лисаковський, B. B., Гордєєв, С. О., Івахненко, C. O., Заневський, O. O., Савицький, O. B., Бурченя, A. B., Супрун, O. M.
Format: Artikel
Sprache:Ukrainian
Veröffentlicht: Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины 2022
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Online Zugang:http://altis-ism.org.ua/index.php/ALTIS/article/view/243
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Назва журналу:Tooling materials science

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Tooling materials science
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Zusammenfassung:The features of growing type Ib diamond single crystals in the Fe-Co-Mg-C solution-melt system by the temperature gradient method in a six-punch high-pressure apparatus CS-VII at a pressure of 6.0–6.2 GPa and a temperature of 1500–1750 °C have been investigated; the concentration intervals of the formation of diamonds of different types are determined depending on the amount of Mg addition; found that within 1.8 - 2.2, 2.2 - 3.5, 3.5 - 4.5 and 4.5 - 5.7 at. % Mg, the type of grown crystals changes in the sequence Ib → Ib + IIa → Ib + IIb → Ib, respectively. An increase in the mass growth rate of single crystals was established by a factor of 2 - 2.5, depending on the temperature and growth time.