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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ogwu, Abraham
University of the West of Scotland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2020Effect of physical activation/surface functional groups on wettability and electrochemical performance of carbon/activated carbon aerogels based electrode materials for electrochemical capacitorscitations
- 2019Comparison of empirical and predicted substrate temperature during surface melting of microalloyed steel using TIG technique and considering three shielding gasescitations
- 2017Synthesis and electrochemical properties of highly porous nitrogen-doped carbon for improved supercapacitor performance
- 2017Improving the functionality of resorcinol-formaldehyde based carbon aerogels as electrode material for supercapacitor applications
- 2017Electrochemical performance of controlled porosity resorcinol/formaldehyde based carbons as electrode materials for supercapacitor applicationscitations
- 2015The Effect of Growth Conditions on the Surface Energy, Optical Properties and Saline Corrosion Resistance of Amorphous Chromium Oxide Thin Films Prepared by Reactive Magnetron Sputtering
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article
Comparison of empirical and predicted substrate temperature during surface melting of microalloyed steel using TIG technique and considering three shielding gases
Abstract
Erosion and wear resistance of steel can be enhanced by incorporating a ceramic powder in the surface. This aspect of surface engineering has applications in areas such as mining, agriculture and transport. An economic alternative to laser for melting the surface is by using a tungsten inert gas torch. The process requires shielding gas to protect the melted and re-solidified track from oxygen and hydrogen in the environment, which often have a deleterious effect on the mechanical properties of the modified surface. During the melting process, the heat produced is conducted to the substrate ahead of the torch; this has been described as ‘preheat’ giving a temperature several hundred degrees higher than the area under the torch. To reduce the number of trial and error experiments for determining the optimal conditions to modify the surface, a mathematical model, based on the Rosenthal approach, was developed. Experiments using TIG technique were conducted on microalloyed steel using argon, helium and nitrogen shielding gases to obtain heating and cooling curves from positions along the melted track. The data for argon was compared with the model. This first attempt to validate the model was satisfactory, showing a deviation of 6% (35oC) between experimental and numerical values.