Growth of Large Diamond Crystals by Reduction of Magnesium Carbonate with Metallic Sodium

Authors

  • Zhengsong Lou,

    1. Structure Research Laboratory, University of Science & Technology of China, Hefei 230026, China, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China, Fax: (+86) 551-3607292
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  • Qianwang Chen Prof.,

    1. Structure Research Laboratory, University of Science & Technology of China, Hefei 230026, China, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China, Fax: (+86) 551-3607292
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  • Wei Wang,

    1. Structure Research Laboratory, University of Science & Technology of China, Hefei 230026, China, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China, Fax: (+86) 551-3607292
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  • Yitai Qian Prof.,

    1. Structure Research Laboratory, University of Science & Technology of China, Hefei 230026, China, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China, Fax: (+86) 551-3607292
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  • Yufeng Zhang

    1. Structure Research Laboratory, University of Science & Technology of China, Hefei 230026, China, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China, Fax: (+86) 551-3607292
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  • This work was supported by the National Natural Science Foundation under the contract No. 20125103 and 90206034.

Abstract

original image

Glitzersteinchen: Diamantkristalle mit Durchmessern bis zu 510 μm (siehe Bild) sind durch Reduktion von Magnesiumcarbonat mit Natrium bei 500 °C zugänglich. Im Reaktionsgemisch wurden die kubischen Kristalle durch Röntgenbeugung und Mikro-Raman-Spektroskopie nachgewiesen. Der Prozess liefert Ausbeuten von 6.6 % bei deutlich niedrigerer Temperatur als herkömmliche Methoden und ist daher interessant für die ökonomische industrielle Diamantproduktion.

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