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.
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| Title: | Growth of a Single MnCr |
|---|---|
| Authors: | Perez, T.1 (AUTHOR), Mathieu, S.1 (AUTHOR) stephane.mathieu@univ-lorraine.fr, Latu-Romain, L.2 (AUTHOR), Wouters, Y.2 (AUTHOR), Vilasi, M.1 (AUTHOR) |
| Source: | High Temperature Corrosion of Materials. Oct2024, Vol. 101 Issue 5, p923-933. 11p. |
| Subjects: | Band gaps, Partial pressure, Oxide coating, Manganese oxides, Raman spectroscopy |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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