Direct Evidence of Catalytic Role of Boron in Graphite‐to‐Diamond Solid‐Phase Conversion under High Pressure,Physica Status Solidi-Rapid Research Letters

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Direct Evidence of Catalytic Role of Boron in Graphite‐to‐Diamond Solid‐Phase Conversion under High Pressure
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2020-06-17 , DOI: 10.1002/pssr.202000247
Rustem Bagramov ₁ , Vladimir Filonenko ₁ , Igor Zibrov ₁ , Sergey Lyapin ₁ , Igor Vlasov ₂

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Herein experimental evidence on the catalytic role of boron in the conversion of graphite to diamond is presented. Highly ordered graphite with up to 1.5% of carbon atoms substituted with boron is obtained from a mixture of nanoglobular carbon and amorphous boron at 5.0 GPa and 1400–1700 °C. It transforms completely into heavily boron‐doped diamond at a pressure of 7.5–8.0 GPa and temperature of 1600–1650 °C, which is well below the melting temperature of boron–carbon eutectic.

中文翻译：

硼在高压下石墨-金刚石固相转化中催化作用的直接证据

本文提供了硼在石墨转化为金刚石中的催化作用的实验证据。在5.0 GPa和1400-1700°C的温度下，由纳米球状碳和无定形硼的混合物制得的碳原子最多为1.5％的高度有序的石墨被硼取代。它在7.5–8.0 GPa的压力和1600–1650°C的温度下完全转变为重硼掺杂的金刚石，该温度远低于硼碳共晶的熔化温度。

更新日期：2020-06-17

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