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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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Röpcke, J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Laser absorption spectroscopy for plasma-assisted thermochemical treatment. Part II.: Impact of the carbon and water contaminants on a low-pressure N<sub>2</sub>-H<sub>2</sub> dischargecitations
- 2023Laser absorption spectroscopy for plasma-assisted thermochemical treatment. Part I.: Applicability of the Beer-Lambert law and interpretation of spectroscopic datacitations
- 2022Influence of carbon contamination on the gas discharge composition in an active screen nitrocarburizing reactor
- 2022Influence of Plasma Power and Oxygen-Containing Process Gases in Active Screen Plasma Nitrocarburizing with Carbon Solid Source*
- 2020Spectroscopic study of plasma nitrocarburizing processes with an industrial-scale carbon active screencitations
- 2019Solid carbon active screen plasma nitrocarburizing of AISI 316L stainless steel: Influence of N<inf>2</inf>-H<inf>2</inf> gas composition on structure and properties of expanded austenitecitations
- 2018On the influence of carbon contamination of reactor parts in active screen plasma nitrocarburizing processescitations
- 2018Spectroscopic investigations of plasma nitrocarburizing processes using an active screen made of carbon in a model reactorcitations
- 2018Spectroscopic investigations of plasma nitriding processes using an active screen made of carbon in a model reactor
- 2018Plasma nitrocarburizing of AISI 316l austenitic stainless steel applying a carbon active screen: Status and perspectives,Plasmanitrocarburieren austenitischen nichtrostenden Stahls AISI 316L unter Anwendung eines Aktivgitters aus Kohlenstoff: Aktueller Stand und Perspektivencitations
- 2017A Novel approach of plasma nitrocarburizing using a solid carbon active screen - A proof of conceptcitations
- 2017Spectroscopic investigations of plasma nitriding processes: A comparative study using steel and carbon as active screen materialscitations
- 2016In-line process control in the active screen plasma nitrocarburizing using a combined approach based on infrared laser absorption spectroscopy and bias power managementcitations
- 2012In-situ monitoring of plasma enhanced nitriding processes using infrared absorption and mass spectroscopycitations
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article
Influence of Plasma Power and Oxygen-Containing Process Gases in Active Screen Plasma Nitrocarburizing with Carbon Solid Source*
Abstract
<jats:title>Abstract</jats:title><jats:p>Plasma nitrocarburizing by means of active screen technology using an active screen made of carbon fiber-reinforced carbon was carried out by varying the power at the active screen and using oxygen-containing fresh gas components (O<jats:sub>2</jats:sub>, CO<jats:sub>2</jats:sub>) in the N<jats:sub>2</jats:sub>:H<jats:sub>2</jats:sub> plasma using the example of the quenched and tempered steel AISI 4140 (42CrMo4). The investigations focused on the analysis of the process gas by means of laser absorption spectroscopy, the evaluation of the produced compound layers with regard to structure and phase composition, as well as the resulting properties. It was shown that by varying the process gas atmosphere, the structural composition of the compound layer and the concentration profiles of nitrogen and carbon can be specifically influenced. The high concentrations of carbon-containing compounds in the process gas resulted in complete suppression of γ’-Fe<jats:sub>4</jats:sub>N formation, but cementite was detected in the lower part of the compound layer. The addition of oxygen-containing fresh gases and the resulting change in process gas composition suppressed cementite formation. The results suggest that, in particular, high powers at the carbon active screen and the simultaneous addition of oxygen-containing gases results in the generation of nitrogen-rich, single-phase ε-compound layers.</jats:p>