Dependence of Growing High-Quality Gem Diamonds on Growth Rates by Temperature Gradient Method

Autor:	Jia Xiao-Peng, Zang Chuan-Yi, Wang Xian-Cheng, Ren Guo-Zhong
Rok vydání:	2004
Předmět:	Metal Temperature gradient Quality (physics) Materials science Physics::Instrumentation and Detectors visual_art High pressure visual_art.visual_art_medium Analytical chemistry General Physics and Astronomy Growth rate Atmospheric temperature range Diamond crystal
Zdroj:	Chinese Physics Letters. 21:1648-1650
ISSN:	1741-3540 0256-307X
Popis:	Using the temperature gradient method under high pressure and high temperature, we investigate the dependence of growing high-quality gem diamond crystals on the growth rates. It is found that the lower the growth rate of gem diamond crystals, the larger the temperature range of growing high-quality gem diamond crystals, and the easier the control of temperature. In particular, when growing gem diamonds under a very-low growth rate, the temperature range of growing high-quality gem diamonds can extend from a low-temperature pure {100} growth region to {100} +{111} growth regions, and finally to a high-temperature only-{111}-growth region. When growing gem diamonds under a high growth rate, some metal inclusions in the growing diamonds always exist near the seeds, no matter whether the growth temperature is high or low. This result is not in agreement with the result of Sumitomo Electric Corporation in Japan.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd1a00048cc7c3f0fa0514d580c0b4d7 https://doi.org/10.1088/0256-307x/21/8/065 Zobrazit plný text záznamu