S. S. Starchikov, V. A. Zayakhanov, I. A. Troyan, A. A. Bykov, K. M. Bulatov, A. L. Vasiliev, D. S. Perekalin, N. I. Snegirev, E. S. Kulikova, V. A. Davydov, I. S. Lyubutin
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引用次数: 0
摘要
我们在金刚石砧室中研究了二茂铁 Fe(C5H5)2 在 10 GPa 压力下被激光加热至 2200 K 时发生热转变的具体特征。获得了加热过程中样品上的温度分布图。通过 X 射线衍射分析、透射电子显微镜和莫斯鲍尔光谱法研究了转化产物的结构和性质。结果表明，激光加热时二茂铁转化的一个特征是同时形成了纳米铁（α-Fe）和碳化铁（Fe7C3）结晶相。在高压下二茂铁的热转化产物中首次观察到 α-Fe 的存在。讨论了在二茂铁转化过程中同时形成这些纳米粒子的可能机制。
Thermal Transformations of Ferrocene Fe(C5H5)2 at a Pressure of 10 GPa and Temperatures up to 2200 K
Specific features of thermal transformations of ferrocene Fe(C5H5)2 at a pressure of 10 GPa upon laser heating to 2200 K have been investigated in diamond anvil cells. Maps of the temperature distribution on the sample during the heating have been obtained. The structure and properties of the transformation products have been studied by X-ray diffraction analysis, transmission electron microscopy, and Mössbauer spectroscopy. It is established that a characteristic feature of ferrocene transformations upon laser heating is the simultaneous formation of nanoparticles of iron (α-Fe) and iron carbide (Fe7C3) crystalline phases. The presence of α-Fe in the products of thermal transformations of ferrocene at high pressures has been observed for the first time. Possible mechanisms of the simultaneous formation of these nanoparticles during ferrocene transformations are discussed.
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All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
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