Improvement in nano-hardness and corrosion resistance of low carbon steel by plasma nitriding with negative DC bias voltage

Alim, Mohamed Mounes; Saoula, Nadia; Tadjine, R.; Hadj-Larbi, Fayçal; Keffous, A.; Kechouane, M.

doi:10.1051/epjap/2016160130

Cited by 9 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The x-rays diffraction (XRD) curves were recorded for the test specimens (shown in figure 4). The XRD pattern for all the specimens shows peaks at 44.67°and 65.02°, thus are associated to the parent α-Fe phase [43]. This signifies that ferrite (α-Fe) phase appeared in all specimens irrespective of the heat treatment process.…”

Section: Microstructural and Xrd Analysis Of The Test Specimensmentioning

confidence: 74%

Experimental investigations on erosion of carbon steels involving textured surfaces

Verma¹

2020

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

The paper aims to report the comparative of erosion on conventional vis a vis textured carbon steel surfaces wherein alumina particles have been used as erodent. Shaping and stamping processes were employed to prepare textured surfaces on carbon steel that comprised of trapezoidal and rasp shapes. Experiments were performed employing alumina particles as erodent striking the carbon steel plates at the impact angles of 15°, 30°and 45°. With due consideration to the particle aspect during exploration, the erodent was made to strike the surface with two impact velocities of 30m s −1 and 60 m s −1 . With the aforesaid parameters and surface condition, experiment was performed for both unhardened and hardened surfaces (total 36 test specimen were used). Textured carbon steel (comprising trapezoidal shape) yielded significant reductions (40%-50%) in erosion in comparison to the conventional case. The reduction in erosion for rasp shape specimen was in a range of 15%-17%. It is worth noting here that the presence of texture has immensely contributed in erosion reduction of unhardened samples as compared to the hardened conventional samples.

show abstract

Section: Microstructural and Xrd Analysis Of The Test Specimensmentioning

confidence: 74%

Experimental investigations on erosion of carbon steels involving textured surfaces

Verma¹

2020

Surf. Topogr.: Metrol. Prop.

View full text Add to dashboard Cite

show abstract

“…The temperature of the substrate increases during the plasma nitriding process due to the effect of two combined phenomena: firstly, the ion bombardment energy, which depends on the high voltage polarization, and secondly, the density of the ionic flux from the bombardment of ions, radicals, and electrons. In previous study, authors 35 studied the effect of the negative polarization voltage and the treatment time on the substrate temperature and the obtained results are presented in Table 3.…”

Section: Methodsmentioning

confidence: 99%

The influence of plasma nitriding hardness treatment on the dynamic compressive behavior of the Hardox 400 at a wide temperature range

Hedjeres¹,

Tria²,

Boudiaf³

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

This paper aims to study the effect of hardness nitriding treatment on the overall mechanical behavior of Hardox 400 steel. A Plasma Immersion Ion Implantation (PIII) technique was used for material nitriding while a split Hopkinson pressure bar equipped with an electromagnetic heating system was used for the thermomechanical characterization of the studied steel. The collected data are analyzed to identify the combined effect of the high strain rates and elevated temperatures on the flow stress and ductility. The microstructure and the physical properties of the nitrided Hardox 400 were studied using scanning electron microscopy (SEM), X-ray diffraction, and nano-indentation tests. Although the increase of the surface hardness by 37%, the quasistatic and dynamic compression tests showed a decrease in the flow stress due to the microstructure modification caused by the increase of the temperature during the plasma nitriding process. For a better assessment of the experimental results, reduction factors for the main mechanical properties are reported. The test data from SHPB indicated a dependency of the strain rate to the temperature of untreated un-nitrided Hardox 400. Finally, a critical review of the well-known Johnson-Cook constitutive model is highlighted, where material parameters are calibrated with special attention to the thermal softening parameter. The obtained results could be of great interest for the assessment of structural components’ robustness where the combined strain rate and temperature for Hardox 400 are met.

show abstract

“…The details concerning the reactor with only the inductive source can be found in our previous work M.M. ALIM et al [15,16]. A home-made 3 inch magnetron source containing a pure Ti target (99.99 %) was installed in the reactor.…”

Section: Materials and Plasma Nitriding Processingmentioning

confidence: 99%

“…A face-centered cubic TiN phase with a (200) preferential orientation was located at 42.58°. The presence of these nitrided phases can be attributed both to the phenomenon of nitrogen backscattering from the pre-treated surface toward the Titanium thin film [19], and desorption of nitrogen atoms under the bombardment induced heating effect [15,20,21].…”

Section: Structural and Morphological Studymentioning

confidence: 99%

Improvement of Mechanical and Electrochemical Properties of Titanium Thin Films Deposited by Duplex Treatment

Alim

Hadj-Larbi

Tadjine

2020

JERA

Self Cite

View full text Add to dashboard Cite

The mechanical and electrochemical properties of a low carbon steel alloy were improved with titanium (Ti) nitrides thin films. A nitriding process ensures the adhesion of the deposited thin films and provides the nitrogen source involved in the formation of the desired nitrides. A hybrid reactor was used to permit this duplex surface treatment and to avoid the oxidation of our samples. The X-ray diffraction revealed the formation of nitrided phases (TiN and Ti2N). The scanning electron microscopy showed an improvement in the adhesion of the deposited thin films with increasing negative bias voltages. The nanohardness of the duplex treated samples was found to be improved. The results obtained after the corrosion tests indicate a reduction of electrochemical activity and therefore an improvement of corrosion resistance.

show abstract

Improvement in nano-hardness and corrosion resistance of low carbon steel by plasma nitriding with negative DC bias voltage

Cited by 9 publications

References 21 publications

Experimental investigations on erosion of carbon steels involving textured surfaces

Experimental investigations on erosion of carbon steels involving textured surfaces

The influence of plasma nitriding hardness treatment on the dynamic compressive behavior of the Hardox 400 at a wide temperature range

Improvement of Mechanical and Electrochemical Properties of Titanium Thin Films Deposited by Duplex Treatment

Contact Info

Product

Resources

About