SOLID STATE DIFFUSION OF NITROGEN AND CARBON IN THE Fe-C SYSTEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F16%3A00533595" target="_blank" >RIV/60162694:G43__/16:00533595 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

SOLID STATE DIFFUSION OF NITROGEN AND CARBON IN THE Fe-C SYSTEM

Popis výsledku v původním jazyce

The plasma nitriding is a process of thermo-chemical treatment using direct-current glow discharge to improve elemental content of nitrogen to the surface of steel for subsequent diffusion into the bulk of material. An ambient atmosphere was consisted of mixture of nitrogen and hydrogen; temperature should be between 480 and 560°C. During the plasma nitriding process nitrogen diffuses to the bulk of material and creates nitrides of iron and alloy elements [1]. Properties of plasma nitriding layers are dependent not only on parameters of nitriding, such as duration, temperature, pressure, voltage and nitrogen potential, but it is also dependent on nitride-formed elements [2]. The temperature of ambient atmosphere and the duration of process have significant influence on the depth of nitrided layer (Nht thickness)[3]. Plasma nitriding process is suitable to use for surfacing of deep cavities with small diameter. This article deals with chemical composition and mechanical properties of plasma nitrided layers after chemical-heat treatment process in variously defined depths from surface to core of material. Also the redistribution of alloy elements in depth of nitrided layers was analysed on two different samples which were plasma nitrided by different duration and finally compared. The nitrided layers were applied to samples of DIN 1.7765 steel which were subsequently evaluated by metallographic, OES and microhardness methods. The results of measurement showed connection of chemical composition of alloying elements after chemical-heat treated process with hardness and microhardness. Analyse of nitrided layers in depth were performed in depths to 102 µm.

Název v anglickém jazyce

SOLID STATE DIFFUSION OF NITROGEN AND CARBON IN THE Fe-C SYSTEM

Popis výsledku anglicky

The plasma nitriding is a process of thermo-chemical treatment using direct-current glow discharge to improve elemental content of nitrogen to the surface of steel for subsequent diffusion into the bulk of material. An ambient atmosphere was consisted of mixture of nitrogen and hydrogen; temperature should be between 480 and 560°C. During the plasma nitriding process nitrogen diffuses to the bulk of material and creates nitrides of iron and alloy elements [1]. Properties of plasma nitriding layers are dependent not only on parameters of nitriding, such as duration, temperature, pressure, voltage and nitrogen potential, but it is also dependent on nitride-formed elements [2]. The temperature of ambient atmosphere and the duration of process have significant influence on the depth of nitrided layer (Nht thickness)[3]. Plasma nitriding process is suitable to use for surfacing of deep cavities with small diameter. This article deals with chemical composition and mechanical properties of plasma nitrided layers after chemical-heat treatment process in variously defined depths from surface to core of material. Also the redistribution of alloy elements in depth of nitrided layers was analysed on two different samples which were plasma nitrided by different duration and finally compared. The nitrided layers were applied to samples of DIN 1.7765 steel which were subsequently evaluated by metallographic, OES and microhardness methods. The results of measurement showed connection of chemical composition of alloying elements after chemical-heat treated process with hardness and microhardness. Analyse of nitrided layers in depth were performed in depths to 102 µm.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/TA04010579" target="_blank" >TA04010579: Zubová čerpadla nové generace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

25th Anniversary International Conference on Metallurgy and Materials

ISBN

978-80-87294-67-3

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1151-1156

Název nakladatele

TANGER Ltd.

Místo vydání

TANGER Ltd., Ostrava

Místo konání akce

Brno

Datum konání akce

25. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000391251200187