scholarly journals Steering the methanol steam reforming reactivity of intermetallic Cu–In compounds by redox activation: stability vs. formation of an intermetallic compound–oxide interface

Author(s):  
Kevin Ploner ◽  
Andrew Doran ◽  
Martin Kunz ◽  
Albert Gili ◽  
Aleksander Gurlo ◽  
...  

To compare the properties of intermetallic compounds and intermetallic compound–oxide interfaces, Cu–In was used as a model to correlate stability limits, self-activation and redox activation with the inherent methanol steam reforming performance.

2012 ◽  
Vol 116 (28) ◽  
pp. 14930-14935 ◽  
Author(s):  
Matthias Friedrich ◽  
Detre Teschner ◽  
Axel Knop-Gericke ◽  
Marc Armbrüster

Catalysts ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 53 ◽  
Author(s):  
Norbert Köpfle ◽  
Lukas Mayr ◽  
Daniela Schmidmair ◽  
Johannes Bernardi ◽  
Axel Knop‐Gericke ◽  
...  

2013 ◽  
Vol 55 (3) ◽  
pp. 289-367 ◽  
Author(s):  
M. Armbrüster ◽  
M. Behrens ◽  
K. Föttinger ◽  
M. Friedrich ◽  
É. Gaudry ◽  
...  

2016 ◽  
Vol 125 (3) ◽  
pp. 1265-1272 ◽  
Author(s):  
Justyna Pawlonka ◽  
Wojciech Gac ◽  
Magdalena Greluk ◽  
Grzegorz Słowik

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1407
Author(s):  
Tianyu Yao ◽  
Kui Wang ◽  
Haiyan Yang ◽  
Haiyan Jiang ◽  
Jie Wei ◽  
...  

A method of forming an Mg/Al intermetallic compound coating enriched with Mg17Al12 and Mg2Al3 was developed by heat treatment of electrodeposition Al coatings on Mg alloy at 350 °C. The composition of the Mg/Al intermetallic compounds could be tuned by changing the thickness of the Zn immersion layer. The morphology and composition of the Mg/Al intermetallic compound coatings were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and electron backscattered diffraction (EBSD). Nanomechanical properties were investigated via nano-hardness (nHV) and the elastic modulus (EIT), and the corrosion behavior was studied through hydrogen evolution and potentiodynamic (PD) polarization. The compact and uniform Al coating was electrodeposited on the Zn-immersed AZ91D substrate. After heat treatment, Mg2Al3 and Mg17Al12 phases formed, and as the thickness of the Zn layer increased from 0.2 to 1.8 μm, the ratio of Mg2Al3 and Mg17Al12 varied from 1:1 to 4:1. The nano-hardness increased to 2.4 ± 0.5 GPa and further improved to 3.5 ± 0.1 GPa. The Mg/Al intermetallic compound coating exhibited excellent corrosion resistance and had a prominent effect on the protection of the Mg alloy matrix. The control over the ratio of intermetallic compounds by varying the thickness of the Zn immersion layer can be an effective approach to achieve the optimal comprehensive performance. As the Zn immersion time was 4 min, the obtained intermetallic compounds had relatively excellent comprehensive properties.


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