Results 151 to 160 of about 2,523,819 (190)

Plasma post oxidation of nitrocarburized AISI 4140 steel

Rare Metals, 2006
Abstract Plasma nitrocarburizing and plasma oxidizing treatments were performed to improve the wear and corrosion resistance of AISI 4140 steel. Plasma nitrocarburizing was conducted for 3 h at 570 °C in the nitrogen, hydrogen and methane atmosphere to produce the ɛ-Fe 2–3 (N, C) phase.
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Wear resistance evaluation of plasma nitrocarburized AISI 316L stainless steel

Materials Chemistry and Physics, 2003
Abstract Nitrocarburization is a thermal chemical process in which the nitrogen and carbon atoms are diffused into the surface of the workpiece simultaneously at the temperature around the eutectoid point (565 °C) of FeCN. It can be applied for improving the properties of the work such as wear and seizure resistance, fatigue strength and hardness ...
Chih-Neng Chang, Fan-Shiong Chen
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Direct Mid-Infrared Frequency Comb Spectroscopy of Nitrocarburizing Plasma Processes

Light, Energy and the Environment 2018 (E2, FTS, HISE, SOLAR, SSL), 2018
We report on mid-infrared broadband direct frequency comb spectroscopy as a novel plasma diagnostic applied to spectroscopic investigations of plasma nitrocarburizing processes. We discuss the parameter-dependent behavior of species like HCN, CH4, and NH3.
Norbert Lang, Alexander D. F. Puth, Sarah-Johanna Klose, Grzegorz Kowzan, Stephan Hamman, Jürgen Röpcke, Piotr Maslowski, Jean-Pierre H. van Helden   +7 more
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Effect of Electrolyte Composition on Characteristics of Plasma Electrolysis Nitrocarburizing

Journal of Materials Engineering and Performance, 2013
In this article, the effect of electrolyte composition on the characteristics of generated layer by plasma electrolytic nitrocarburizing process is studied. The characterization of the layer was carried out by means of SEM, x-ray diffraction, and EIS techniques.
H. Tavakoli, S. M. Mousavi Khoie, S. P. H. Marashi, O. Bolhasani   +3 more
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Micro-abrasive wear resistance of the duplex expanded austenite layer phases produced by plasma nitrocarburizing

Wear, 2019
The present study investigates the influence of the phases of the duplex expanded austenite layer on the micro-abrasive wear resistance of the plasma nitrocarburized AISI 304 austenitic stainless steel.
P. Cisquini, S. V. Ramos, V. Lins, A. R. Franco, E. Vieira   +4 more
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Plasma Nitriding and Nitrocarburizing of Austempered S.G. Cast Iron

1990
The effects of varying austempering parameters on the response of S.G. cast iron to plasma nitriding and nitrocarburizing was studied. The ideal austempered microstructure of bainite and austenite yielded poor compound layers and the shallowest case depth.
R. Priestner, S. Korichi
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Effect of CH4 addition on plasma nitrocarburizing of austenitic stainless steel

Surface and Coatings Technology, 2003
Abstract This article evaluates the influence of the plasma atmosphere composed of different ratios of N2/H2/CH4 on the micro-structures, wear resistance and corrosion resistance of 304L and 316L austenitic stainless steels. DC power with a bias voltage in the range of 250–350 V was applied between the vessel (anode) and the work (cathode).
Fan-Shiong Chen, Chih-Neng Chang
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On the influence of carbon contamination of reactor parts in active screen plasma nitrocarburizing processes

Journal of Applied Physics, 2018
Compared to conventional plasma nitrocarburizing the active screen plasma nitrocarburizing technology reduces significantly the risk of soot production and cementite precipitation in the compound layer of nitrocarburized materials.
I. Burlacov, S. Hamann, H. Spies, J. Röpcke, H. Biermann   +4 more
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Spectroscopic investigations of plasma nitrocarburizing processes using an active screen made of carbon in a model reactor

Plasma Sources Science & Technology, 2018
The active screen plasma nitrocarburizing technology significantly reduces the risk of cementite precipitation in the compound layer of nitrocarburized materials and of soot production compared to conventional plasma nitrocarburizing.
A. Puth, S. Hamann, L. Kusýn, I. Burlacov, A. Dalke, H. Spies, H. Biermann, J. Röpcke   +7 more
semanticscholar   +1 more source

Effect of electrolyte depletion on characteristics of anodic plasma electrolytic nitrocarburizing

Surface Engineering and Applied Electrochemistry, 2015
This article considers changes in the composition of aqueous electrolytes containing ammonia chloride and urea during plasma electrolytic nitrocarburizing of low-carbon steels. The main purpose is the identification of the transport mechanism of nitrogen and carbon atoms movement from the urea into treated low-carbon steel. The effect of changes in the
S. A. Kusmanov, Yu. V. Parkaeva, I. S. Frolov, A. R. Naumov, P. N. Belkin   +4 more
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