High-pressure synthesis of diamond from graphite and Fe2SiO4

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概要

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• A mixture of graphite and Fe2SiO4 in a ratio 2:3 by weight has been studied under pressures from 6 to 10GPa and temperatures between 1000 and 1960°C using an octahedral-anvil apparatus. At 8GPa, diamond with a size -10μm across was found to be formed at temperatures higher than 1900°C. This threshold temperature is by 150°C higher than the melting temperature of Fe2SiO4 at this pressure. The result offers a clue to the genesis of diamond in the deep interior of the earth.

• 日本学士院の論文

著者

• SUITO Kaichi

  Graduate School of Engineering Science, Osaka University

• NAMBA Junpei

  Graduate School of Engineering Science, Osaka University

• TSUTSUI Yasumitsu

  Graduate School of Engineering Science, Osaka University

• ONODERA Akifumi

  Graduate School of Engineering Science, Osaka University

関連論文

• High-pressure synthesis of diamond from graphite and Fe2SiO4
• High-Pressure Synthesis of Superhard Material from C60

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