Results 11 to 20 of about 284 (161)

Effects of Plasma-Chemical Composition on AISI 316L Surface Modification by Active Screen Nitrocarburizing Using Gaseous and Solid Carbon Precursors [PDF]

Metals, 2021
Low-temperature plasma nitrocarburizing treatments are applied to improve the surface properties of austenitic stainless steels by forming an expanded austenite layer without impairing the excellent corrosion resistance of the steel.
Saeed M. Jafarpour, Andrei V. Pipa, Alexander Puth, Anke Dalke, Jürgen Röpcke, Jean-Pierre H. van Helden, Horst Biermann   +6 more
doaj   +4 more sources

Mass Spectrometry Study of Ammonia Formed During Plasma Nitrocarburizing and Nitriding Processes [PDF]

Materials Research, 2018
In this work, we used mass spectrometry to investigate ammonia (NH3) formed during the nitrocarburizing and nitriding processes of α-Fe sintered and low alloy steel by using d.c.
Paola Egert, Heloisa Regina Turatti Silva, Carlos Viana Speller, Jayr de Amorim, Allan Seeber   +4 more
doaj   +2 more sources

Possibilities of the Utilization of Ferritic Nitrocarburizing on Case-Hardening Steels. [PDF]

Materials (Basel), 2021
This paper is devoted to the possibilities of the utilization of chosen chemical heat treatment technologies on steels used for manufacturing highly stressed components of military vehicles and weapons systems.
Prochazka J, Pokorny Z, Jasenak J, Majerik J, Neumann V.   +4 more
europepmc   +2 more sources

Low‐Pressure Nitrocarburizing in Standard Vacuum Furnaces—Preliminary Studies

Advanced Engineering Materials, Volume 25, Issue 24, December 2023., 2023
Low‐pressure nitrocarburizing is performed in a standard vacuum furnace, using ammonia/acetylene atmosphere. Performed studies confirm the safety of the process—no toxic gases and undesired deposit are generated during the process. Nitrocarburizing of 16MnCr5 alloy steel samples results in the increase in hardness and formation of 20 μm effective case ...
Sylwester Pawęta, Monika Galeziewska, Adam Rewers, Przemysław Pawęta, Bartłomiej Szternal, Robert Pietrasik   +5 more
wiley   +1 more source

Nitriding of White‐Solidified Fe–C–Si Alloys: Diffusion Path Concept Applied to Inhomogeneous Microstructures

Advanced Engineering Materials, Volume 24, Issue 3, March 2022., 2022
The Fe nitride and compound layer formation during nitriding of white‐solidified Fe–C–Si alloys is studied. Due to the heterogeneous distribution and limited diffusivity of Si, different microstructure regions behave like different alloys being nitrided simultaneously.
Stefan Kante, Mykhaylo Motylenko, Andreas Leineweber   +2 more
wiley   +1 more source

Corrosion Resistance of Plasma Nitrided and Nitrocarburized 42CrMo4 Steel [PDF]

Manufacturing Technology, 2017
This article deals with comparison of corrosion resistance of 42CrMo4 steel used for breech mechanism in the armament production. Increasing of demands on materials used for armament production and in other industrial application leads to the innovation of technologies in the field of surface treatment especially wear resistance, surface hardness ...
David Kusmic, Doan Van Thanh
openaire   +1 more source

Low-temperature Plasma Assisted Thermochemical Treatments of AISI 420 Steel: Comparative Study of Obtained Layers [PDF]

Materials Research, 2015
Formation of metastable C–, N–, or even Formation of metastable C–, N–, or even C/N– expanded phases can be observed for typical non-equilibrium conditions attained at the plasma assisted thermochemical treatments when temperatures relatively low are ...
Cristiano José Scheuer, Rodrigo Perito Cardoso, Silvio Francisco Brunatto   +2 more
doaj   +1 more source

CHARACTERIZATION OF NITROCARBURIZED COATING BY PLASMA ELECTROLYTIC SATURATION

Acta Metallurgica Slovaca, 2018
Plasma electrolytic saturation (PES) is an atmospheric pressure plasma deposition which is used for fabrication of nanostructural coatings. This process starts with the appearance of some sparks on the surface and finally by the formation of plasma envelope around the sample, particles and free radicals bombard the surface and diffusion takes place ...
Seyyed Mohammad Noori, Changiz Dehghanian   +1 more
openaire   +2 more sources

Effect of the PEN/C surface layer modification on the microstructure, mechanical and tribological properties of the 30CrMnSiA mild-carbon steel

Journal of Materials Research and Technology, 2020
As result of plasma-electrolytic nitrocarburizing 30CrMnSiA carbon steel (ferrite-perlite grade), there was a change in the elemental and phase composition, as well as the surface layer microstructure (40 ÷ 45 microns thick from the surface). A formation
L.G. Zhurerova, B.K. Rakhadilov, N.A. Popova, M.K. Kylyshkanov, V.V. Buranich, A.D. Pogrebnjak   +5 more
doaj   +1 more source

Spectroscopic study of plasma nitrocarburizing processes with an industrial-scale carbon active screen [PDF]

, 2020
The active screen plasma nitrocarburizing technology is an improvement of conventional plasma nitrocarburizing by providing a homogeneous temperature distribution within the workload and reducing soot formation.
Dalke, A., Burlacov, I., Biermann, H., Hamann, S., Pipa, A.V., van Helden, J.H., Puth, A., Röpke, J., Kusýn, L.   +8 more
core   +1 more source