scholarly journals Sustainable Oxygen Evolution Catalysis - Electrochemical Generation of Mössbauerite via Corrosion Engineering of Steel

2021 ◽  
Author(s):  
Sebastian Weiss ◽  
A. V. Radha ◽  
Michael Ertl ◽  
Catherine McCammon ◽  
Josef Breu
Keyword(s):  
Oxygen Evolution ◽  
Steel Substrate ◽  
Electrochemical Corrosion ◽  
Corrosion Process ◽  
Green Rust ◽  
Trivalent Iron ◽  
Electrochemical Generation

A versatile electrochemical corrosion process was used to generate green rust (GR) on a steel substrate and to transform it into the trivalent iron-only oxygen evolution catalyst mössbauerite (GR*) upon...

Electrochemical Generation of Green Rust and Modified Green Rust for Water Treatment Applications

2016 ◽  
Vol 6 (2) ◽  
pp. 83-91 ◽  
Author(s):  
Andrew Jewel Gomes ◽  
Arnab Baksi ◽  
Iftikher Haider ◽  
John Gossage ◽  
Hector Moreno ◽  
...  
Keyword(s):  
Water Treatment ◽  
Green Rust ◽  
Electrochemical Generation

Electrochemical corrosion characteristics of hierarchical O-TiN coating on 304L steel substrate

2022 ◽  
pp. 128079
Author(s):  
Gaurav Malik ◽  
Jignesh Hirpara ◽  
Ankit Kumar ◽  
Mritunjay Kumar Pandey ◽  
Ramesh Chandra
Keyword(s):  
Steel Substrate ◽  
Electrochemical Corrosion ◽  
Tin Coating ◽  
304L Steel

Oxygen evolution reaction electrocatalysis on SrIrO3 grown using molecular beam epitaxy

2016 ◽  
Vol 4 (18) ◽  
pp. 6831-6836 ◽  
Author(s):  
Runbang Tang ◽  
Yuefeng Nie ◽  
Jason K. Kawasaki ◽  
Ding-Yuan Kuo ◽  
Guido Petretto ◽  
...  
Keyword(s):  
Energy Storage ◽  
Molecular Beam Epitaxy ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Molecular Beam ◽  
Electrochemical Energy Storage ◽  
Energy Storage Devices ◽  
Electrochemical Generation ◽  
Air Breathing ◽  
Storage Devices

Electrochemical generation of oxygen via the oxygen evolution reaction (OER) is a key enabling step for many air-breathing electrochemical energy storage devices.

Corrosion Resistance of Rare Earth Modified Chromizing Coating on P110 Oil Casing Tube Steel by Pack Cementation

2009 ◽  
Vol 79-82 ◽  
pp. 1075-1078
Author(s):  
Nai Ming Lin ◽  
Fa Qin Xie ◽  
Tao Zhong ◽  
Xiang Qing Wu ◽  
Wei Tian
Keyword(s):  
Corrosion Resistance ◽  
Rare Earth ◽  
Steel Substrate ◽  
Electrochemical Corrosion ◽  
Corrosion Current ◽  
Pack Cementation ◽  
Tube Steel ◽  
X Ray ◽  
Immersion Corrosion ◽  
P110 Steel

The rare earth (RE) modified chromizing coating was obtained on P110 oil casing tube steel (P110 steel) substrate by means of pack cementation technique to enhance the resistance against corrosion of P110 steel. Scanning Electron Microscopy (SEM), Energy Dispersive X-ray analysis (EDX) and X-ray diffraction (XRD) were employed to research microstructure, composition distribution and phase constitution of the chromizing coating. The effect of minor addition of RE on the microstructure of chromizing was discussed. Corrosion resistance of chromizing coating was investigated and compared with that of bare P110 steel via electrochemical corrosion and immersion corrosion in simulated oilfield brine solution, respectively. The results showed that a uniform, continuous and compact coating was formed on P110 steel. The coating with RE addition was more compact than that of the coating added no RE, and a small amount of RE addition could promote the chromizing procedure notably. From SEM and EDX investigation, it had been confirmed that the coating was composed of two different layers, an out layer and an inner layer; the coating mainly contains Fe and Cr; the concentration of Cr decreased as the distance from the surface increased, yet Fe presented the inverse trend. XRD analysis indicated the coating was built up by (Cr, Fe)23C6 referring to the out layer, (Cr, Fe)7C3, Cr7C3 and α-(Cr, Fe) corresponding to the inner layer. Electrochemical corrosion consequence was obtained as follows: the self-corroding electric potential of chromizing coating was higher, and the corrosion current density was lower than that of bare P110 steel, which revealed that chromizing coating had better anti-corrosion performance; immersion corrosion results demonstrated the mass loss of chromized P110 steel was lower, and this meant that chromizing coating had a better corrosion resistance than that of bare P110 steel on the experimental condition. A compact (Cr, Fe)xCy coating can be fabricated by pack cementation technique. As a result of minor RE addition, microstructure and corrosion resistance of the chromizing coating are improved obviously.

scholarly journals Investigation on Microstructure, Nanohardness and Corrosion Response of Laser Cladded Colmonoy-6 Particles on 316L Steel Substrate

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6183
Author(s):  
Jeyaprakash Natarajan ◽  
Che-Hua Yang ◽  
Sundara Subramanian Karuppasamy
Keyword(s):  
Surface Roughness ◽  
Corrosion Resistance ◽  
Oil And Gas ◽  
Steel Substrate ◽  
Corrosion Process ◽  
Corrosion Resistance Property ◽  
316L Steel ◽  
Eis Analysis ◽  
Stable Passive

316L steel is predominantly used in manufacturing the components of high-pressure boilers, heat exchangers, aerospace engines, oil and gas refineries, etc. Its notable percentage of chromium offers resistance against corrosion and is mostly implemented in harsh environments. However, long-term exposure to these components in such environments can reduce their corrosion resistance property. Particularly at high temperatures, the oxide film formed on this type of steel reacts with the chloride, sulfides, sulfates, fluorides and forms intermetallic compounds which affect its resistance, followed by failures and losses. This work is focused on investigating the hardness, microstructure and corrosion resistance of the laser cladded Colmonoy-6 particles on the 316L steel substrate. The cladded specimens were dissected into cubic shapes and the microstructure present in the cladded region was effectively analyzed using the FESEM along with the corresponding EDS mapping. For evaluating the hardness of the cladded samples, the nanoindentation technique was performed using the TI980 TriboIndenter and the values were measured. The potentiodynamic polarization curves were plotted for both the substrate and clad samples at 0, 18, 42 and 70 h for revealing the corrosion resistance behavior. In addition, the EIS analysis was carried out to further confirm the resistance offered by the samples. The surface roughness morphology was evaluated after the corrosion process using the laser microscope, and the roughness values were measured and compared with the substrate samples. The result showed that the cladded samples experience greater hardness, lower values of surface roughness and provide better corrosion resistance when compared with substrate samples. This is due to the deposition of precipitates of chromium-rich carbide and borides that enhances the above properties and forms a stable passive film that resists corrosion during the corrosion process.

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