Growth of a Single MnCr2O4 Spinel on Ni–25Cr–1.5Mn Alloy by the Rhines Pack Method and Photoelectrochemical and Raman Signatures of MnCr2O4 Spinel

IF 2.1 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Oxidation of Metals Pub Date : 2024-07-29 DOI:10.1007/s11085-024-10269-4

T. Perez, S. Mathieu, L. Latu-Romain, Y. Wouters, M. Vilasi

引用次数: 0

Abstract

A single thin MnCr₂O₄ spinel layer was synthesized on a Ni–25Cr–1.5Mn alloy by a fine control of oxygen partial pressure using the Rhines-pack method, a technique that utilized an appropriate buffering powder mixture. The spinel was characterized using X-Ray diffraction, Raman spectroscopy and photoelectrochemistry. The cubic spinel MnCr₂O₄ was formed under the oxygen partial pressure close to 5 × 10^–21 atm at 1050 °C controlled by the buffering Ni–25Cr/Cr₂O₃ powder mixture. Raman MnCr₂O₄ spectrum is characterized by five vibrational modes, whereas photoelectrochemical characterization revealed the MnCr₂O₄ band gap measurement at 3.7 eV with an n-type conductivity.

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用莱茵包法在镍-25Cr-1.5Mn 合金上生长单一 MnCr2O4 尖晶石以及 MnCr2O4 尖晶石的光电化学和拉曼特征

通过使用莱茵包法（一种利用适当缓冲粉末混合物的技术）精细控制氧分压，在 Ni-25Cr-1.5Mn 合金上合成了单层薄 MnCr2O4 尖晶石层。利用 X 射线衍射、拉曼光谱和光电化学对尖晶石进行了表征。立方尖晶石 MnCr2O4 是在氧分压接近 5 × 10-21 atm、温度为 1050 ℃ 的条件下形成的，由缓冲粉末 Ni-25Cr/Cr2O3 混合物控制。拉曼 MnCr2O4 光谱以五种振动模式为特征，而光电化学特征则显示 MnCr2O4 带隙测量值为 3.7 eV，具有 n 型导电性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Oxidation of Metals 工程技术-冶金工程

CiteScore

5.10

自引率

9.10%

发文量

审稿时长

2.2 months

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