AISI 304 nitrocarburized at low temperature: Mechanical and tribological properties

In the present work, the effects of 300 °C glow discharge nitrocarburizing process on structural, mechanical and tribological properties of AISI 304 stainless steel are reported. The carbon amount (CH 4) in the nitriding atmosphere (N 2) was 2% and the working times were from 0.5 to 4 h. Surface mec...

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Veröffentlicht in:Surface & coatings technology 2010-06, Vol.204 (18), p.3004-3008
Hauptverfasser: Foerster, C.E., Assmann, A., da Silva, S.L.R., Nascimento, F.C., Lepienski, C.M., Guimarães, J.L., Chinelatto, A.L.
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container_end_page 3008
container_issue 18
container_start_page 3004
container_title Surface & coatings technology
container_volume 204
creator Foerster, C.E.
Assmann, A.
da Silva, S.L.R.
Nascimento, F.C.
Lepienski, C.M.
Guimarães, J.L.
Chinelatto, A.L.
description In the present work, the effects of 300 °C glow discharge nitrocarburizing process on structural, mechanical and tribological properties of AISI 304 stainless steel are reported. The carbon amount (CH 4) in the nitriding atmosphere (N 2) was 2% and the working times were from 0.5 to 4 h. Surface mechanical and tribological behaviors in the modified surfaces were studied by using instrumented indentation and reciprocating sliding techniques. At the employed nitrocarburizing atmosphere and for all of the processing times two types of expanded austenite (γ C and γ N) were formed. High hardness such as 10–11 GPa in comparison to the low matrix hardness (2.5 GPa) was obtained in a shallow plateau-like shape. The surface hardening increases the wear resistance by a factor of five in respect to untreated steel. These improvements were obtained at all nitrocarburizing times.
doi_str_mv 10.1016/j.surfcoat.2009.12.030
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source Elsevier ScienceDirect Journals
subjects Applied sciences
Atmospheres
Austenitic stainless steels
Carbon
Carbonitriding
Contact of materials. Friction. Wear
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Glow discharge
Glow discharges
Hardness
Heat treatment
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Nitrocarburizing
Physics
Production techniques
Reciprocating
Stainless steel
Surface treatments
Thermochemical treatment and diffusion treatment
Tribology
Wear
title AISI 304 nitrocarburized at low temperature: Mechanical and tribological properties
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