Abstract In the present work, highly reactive amorphous B and small-size graphene nanoplates (GNPs) were used as raw materials, and in-situ synthesis of Al3BC/Al composites by solid reaction was explored. During the solid reaction process, relative contents of AlB2 and Al3BC were increased linearly with the reaction temperature (from 578 to 645 °C) and reaction time (1–12 h). However, for the composites reacted at 660 °C, the Al3BC content was slightly increased while the content of AlB2 was decreased gradually with increase in reaction time. Regardless of the reaction temperature and time, no Al4C3 phase was observed in the present work. It is suggested that the Al matrix and amorphous B were initially reacted to form AlB2, which was further reacted with C element to form Al3BC. Although, Al4C3 has been widely reported in literature, AlB2 could also be used as reactant to form Al3BC. It has been found that the bending strength of the composites has been increased 30% (from 353 to 462 MPa) since the reinforcement was evolved from amorphous B and GNPs to Al3BC and small content of AlB2.

中文翻译：

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非晶硼和石墨烯纳米片固体反应原位合成Al3BC/Al复合材料

摘要 本研究以高反应性非晶硼和小尺寸石墨烯纳米片（GNPs）为原料，探索了固相反应原位合成Al3BC/Al复合材料。在固体反应过程中，AlB2 和 Al3BC 的相对含量随反应温度（从 578 到 645°C）和反应时间（1-12 小时）线性增加。然而，对于在 660 °C 反应的复合材料，随着反应时间的增加，Al3BC 的含量略有增加，而 AlB2 的含量逐渐减少。无论反应温度和时间如何，在目前的工作中都没有观察到 Al4C3 相。这表明Al基体和非晶B最初反应形成AlB2，AlB2进一步与C元素反应形成Al3BC。尽管 Al4C3 已在文献中广泛报道，AlB2 也可用作反应物以形成 Al3BC。已经发现，由于增强材料从无定形 B 和 GNPs 演变为 Al3BC 和少量 AlB2，复合材料的弯曲强度提高了 30%（从 353 到 462 MPa）。