论文标题
纳米胶质的SC2SNC最大相的熔融盐合成
Molten salt synthesis of a nanolaminated Sc2SnC MAX Phase
论文作者
论文摘要
最大相是具有金属和陶瓷特性的三元分层材料的家族，也是合成二维MXENES的前体的前体。该理论预测，有600多个稳定的三元层次最大阶段。目前，通过实验合成了80多种三元最大相，而在M的最大相位是稀有土元素的最大相关报告。在这项研究中，通过SC，SN和C混合物的反应烧结，合成了M位置上具有稀土元素SC的新型最大sc2SNC。通过X射线衍射，扫描电子显微镜和X射线能谱分析证实了SC2SNC的相组成和显微结构。通过密度函数理论研究了SC2SNC的结构稳定性，机械和电子特性。这项研究打开了一个未知三元层的稀土化合物REN+1SNCN（RE = SC，Y，LA-ND，N = 1）和相应的稀土MXENES的门。
The MAX phases are a family of of ternary layered material with both metal and ceramic properties, and it is also precursor ma-terials for synthesis of two-dimensional MXenes. The theory predicted that there are more than 600 stable ternary layered MAX phases. At present, there are more than 80 kinds of ternary MAX phases synthesized through experiments, and few reports on MAX phases where M is a rare earth element. In this study, a new MAX phase Sc2SnC with rare earth element Sc at the M sites was synthesized through the reaction sintering of Sc, Sn, and C mixtures. Phase composition and microstructure of Sc2SnC were confirmed by X-ray diffraction, scanning electron microscopy and X-ray energy spectrum analysis. And structural stability, mechanical and electronic properties of Sc2SnC was investigated via density functional theory. This study open a door for ex-plore more unknown ternary layered rare earth compounds Ren+1SnCn (Re=Sc, Y, La-Nd, n=1) and corresponding rare earth MXenes.
