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首页> 外文期刊>International Journal of Electrochemical Science >Composite Comprising β-Sn and Amorphous Mn Phases Formed by Phase Separation during Electrodeposition
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Composite Comprising β-Sn and Amorphous Mn Phases Formed by Phase Separation during Electrodeposition

机译：电沉积过程中由相分离形成的β-Sn和非晶态Mn相的复合材料

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摘要

Sn–Mn thin films electrodeposited in aqueous solutions having Mn/Sn charged molar ratios between0.05 and 3.5 within a temperature range from 273 to 323 K were investigated using energy dispersiveX-ray spectroscopy (EDX) and X-ray diffraction (XRD). A Mn/Sn critical charged molar ratio at whichthe Mn contents in the Sn–Mn thin films appreciably changed was observed. The Mn/Sn critical chargedmolar ratio shifted to a larger value with an increase in the deposition temperature. The EDX and XRDanalyses demonstrated that the electrodeposited Sn–Mn thin films comprised β-Sn and amorphous Mnphases, and the β-Sn phase and the amorphous Mn phase formed by the phase separation at the Mn/Sncritical charged molar ratio. In addition, the Sn–Mn thin films did not include any intermetalliccompounds. The Sn–Mn thin films were concluded to be composites comprising the β-Sn andamorphous Mn phases. The phase separation and the Mn/Sn critical charged molar ratio were explainedby a free energy model.
机译：使用能量色散X射线光谱（EDX）和X射线衍射（XRD）研究了在273至323 K的温度范围内电沉积在Mn / Sn带电摩尔比为0.05至3.5的水溶液中的Sn-Mn薄膜。观察到Mn / Sn临界电荷摩尔比，在该比率下，Sn-Mn薄膜中的Mn含量发生明显变化。随着沉积温度的升高，Mn / Sn临界带电摩尔比移至更大的值。 EDX和XRD分析表明，电沉积的Sn-Mn薄膜包含β-Sn和非晶Mn相，以及在Mn / Sn临界电荷摩尔比下通过相分离形成的β-Sn相和非晶Mn相。此外，Sn-Mn薄膜不包含任何金属间化合物。得出结论，Sn-Mn薄膜是包含β-Sn和非晶态Mn相的复合材料。用自由能模型解释了相分离和Mn / Sn临界带电摩尔比。

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