Plasma surface treatment of AISI 4140 steel for improved corrosion resistance

Mittelstädt, F. G.; Franco, Carlos; Muzart, J.L.R.; Souza, A. R. de; Cardoso, L. P.

doi:10.1007/bf01139161

Cited by 16 publications

(4 citation statements)

References 7 publications

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“…The coating parameters are fixed for the entire process and very good bonding was achieved. Mittelst€ adt et al 7 investigated the corrosion properties of plasma surface treated AISI 4140 steel. Pitting initiation and propagation were found to be occurred in the chloride atmosphere.…”

Section: Introductionmentioning

confidence: 99%

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Effect of deposition thickness on microstructure and thermal behaviour of ZnO-Mg coated AISI 4140 for automotive applications

Ramkumar¹,

Selvakumar²,

Mohanraj

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this research article, the detailed morphology characterization and thermal behaviour of AISI 4140 steel coated with ZnO-Mg were studied. Coating thickness of approximately ≈ 30, 60 and 90 µm were taken. The surface morphology of the coated samples was studied using Optical Microscope (OM) and Scanning Electron Microscope (SEM). Phases present in the coated samples were confirmed using X-Ray Diffraction Technique (XRD) and Raman Spectroscopy. Thermal properties of the coated samples such as thermal conductivity and thermal diffusivity were determined. In addition, specific heat of the coated samples was also identified. The samples with coating thickness of 30 µm exhibit enhanced thermal properties compared to other coated samples. The results reveal that ZnO-Mg coating can significantly improve the thermal properties of AISI 4140 steel, which can be a fair candidate material for automotive applications.

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Section: Introductionmentioning

confidence: 99%

“…Mittelstädt et al. 7 investigated the corrosion properties of plasma surface treated AISI 4140 steel. Pitting initiation and propagation were found to be occurred in the chloride atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Effect of deposition thickness on microstructure and thermal behaviour of ZnO-Mg coated AISI 4140 for automotive applications

Ramkumar¹,

Selvakumar²,

Mohanraj

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Thermochemical nitriding treatments are used heavily in many kinds of steel because frequent use of steels in all ranges of industry [1,2]. Nitriding is a surface thermochemical treatment technique used to introduce and install nitrogen atoms into metallic materials, surface to improve their surface hardness, mechanical properties, as well as wear [3,4] and corrosion resistance [5,6], as well as fatigue life [7,8,9]. The most important and old method of thermo chemical surface hardening operation is nitriding operation of steel which changing chemical properties of surface layer [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Time on the Compound Layer Formed During Salt Bath Nitriding of Aisi 4140 Steel

Ghelloudj

Tahar

Djebaili

2018

Acta Metall Slovaca

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<p class="AMSmaintext">This research was carried out to study the effect of time on the compound layer of AISI 4140 steel in salt bath nitriding. The nitriding process were implemented on AISI 4140 steel in salt bath component for different times (from 1 h to 10 h) at 580 °C. Samples of AISI 4140 steel were treated and characterized (at surface and core of samples) through the following technique: optical microscopy, scanning electron microscopy, X-ray diffraction (XRD) and microhardness tester. Shows that thick compound layers are formed during continuous salt bath nitriding. The thickness of the compound layer and surface hardness increases with increasing time.</p>

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“…To improving and elevating the alloy's tribological properties, You must use thermochemical techniques such as nitriding, carburizing, and nitrocarburizing [2][3]. Nitriding treatments in several varieties of steel are widely used in industry because of their broad application range [4], Nitriding is a surface treatment technique used to introduce nitrogen into metallic materials to improve their surface hardness, mechanical properties, as well as wear [5][6] and corrosion resistance [7][8], as well as fatigue life [9,10,11]. The most important and oldest method of thermo chemical surface hardening operation is nitriding operation of steel which changing the chemical properties of the surface layer [12].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Salt Bath Nitriding Variables on Hardness Layer of Aisi 1045 Steel

Ghelloudj¹,

Djebaili²,

Hannachi³

et al. 2016

Acta Metall Slovaca

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The aim of this paper is to study and analyze the effects of a surface controlled salt bath nitriding on the microhardness of AISI 1045 steel. The nitriding process was implemented in the salt bath component at ten different times (from 1 h to 10 h) when the temperature was constant at (520ºC). The nitriding process repeated of other specimens at the same times, but the temperature was (580ºC).The microstructure of the surface layers was investigated by scanning electron microscopy (SEM) and optical microscopy. Hardness profiles were measured with lowload hardness testing to determine the growth of the case depth after nitriding. Microhardness testing was carried out on samples to investigate the hardness profile at the transition from the compound to the diffusion layer. The microhardness of the surface of the nitrided sample at 520ºC and 580ºC was observed in the range of 318-430 HV0.3 and 329-421 HV0.3, respectively. Experimental results showed that the nitrides ε-Fe2-3(N, C) and γ'-Fe4(N,C) present in the compound layer increase the microhardness , It also showed that the Increasing the salt bath nitriding parameters (treatment time and temperature) increases the surface hardness and hardness profile.

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Plasma surface treatment of AISI 4140 steel for improved corrosion resistance

Cited by 16 publications

References 7 publications

Effect of deposition thickness on microstructure and thermal behaviour of ZnO-Mg coated AISI 4140 for automotive applications

Effect of deposition thickness on microstructure and thermal behaviour of ZnO-Mg coated AISI 4140 for automotive applications

Effect of Time on the Compound Layer Formed During Salt Bath Nitriding of Aisi 4140 Steel

The Influence of Salt Bath Nitriding Variables on Hardness Layer of Aisi 1045 Steel

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