Microstructure and wear properties of AISI M2 tool steel on RF plasma nitriding at different N2–H2 gas compositions

Mohammadzadeh, Roghayeh; Akbari, Alireza; Drouet, M.

doi:10.1016/j.surfcoat.2014.08.036

Cited by 58 publications

(36 citation statements)

References 40 publications

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“…which is much more brittle than the underneath diffusion layer due to the different characteristics, including different crystal lattices, therefore, the compound layer is easy to crack upon subjecting impact loads [10] . Moreover, the big difference of elasticity modulus between compound layer and diffusion layer results in uncoordinated deformation, especially upon subjecting cyclic loads [10,11] , which makes the compound layer have a tendency to crack and peel off from the surface, and thus result in premature failure. Therefore, though the compound layer can provide high surface hardness and excellent wear resistance, it is of significant value for 38CrMoAl high-pressure valve to get a nitriding layer without compound layer for preventing its premature failure in real applications.…”

Section: Results and Discussion 31 Microstructure Characterizationmentioning

confidence: 99%

“…To meet the technical requirements, surface modification of high-pressure valves is necessary [3][4][5], and plasma nitriding is one of the most widely used surface modification techniques in industry, since a modified layer with high surface hardness and excellent wear resistance can be obtained [6][7][8][9]. Unfortunately, during conventional plasma nitriding, a hard and brittle compound layer (also called white layer) is generally produced, which is easy to crack and peel off from the surface during the service life of 38CrMoAl steel high-pressure valve upon subjecting the severe impact and cyclic load [10][11][12], and thus leading to premature failure of the components. Hence, it is of significant value to control the formation of compound layer during plasma nitriding for highpressure valve.…”

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confidence: 99%

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EFFECT OF NITROGEN HYDROGEN RATIO ON PLASMA NITRIDING FOR 38CrMoAl

Song

Peng

Zhao

et al. 2018

Acta Metall Slovaca

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Critical nitrogen hydrogen ratio in plasma nitriding was primarily investigated to get enhanced performance for 38CrMoAl steel. The modified surface layer was characterized by optical microscopy (OM), X-ray diffraction (XRD) and micro-hardness tester. The results showed that the critical nitrogen hydrogen ratio was 1: 5 while plasma nitriding at 540℃ for 6 h. Under this condition, no compound layer was formed, and accompanied with high surface hardness, while the compound layer was formed accompanied with lower surface hardness with nitrogen hydrogen ratio higher than the critical value.

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Section: Results and Discussion 31 Microstructure Characterizationmentioning

confidence: 99%

mentioning

confidence: 99%

EFFECT OF NITROGEN HYDROGEN RATIO ON PLASMA NITRIDING FOR 38CrMoAl

Song

Peng

Zhao

et al. 2018

Acta Metall Slovaca

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“…Apparently, the fine powders of the size of several microns around the Fe 78 Si 9 B 13 particles possibly act as lubricants (Figure 8d,f). In addition, the residual stress after FSP is compressive stress [46], and moderate levels of compressive residual stress have beneficial effects on wear resistance by delaying crack initiation and growth [52]. Furthermore, the smaller grain was conducive to formation of a tribological transformed structure (TTS) layer, and produced shorter delamination cracks in the TTS layer than the larger one [53]—that is, the ultrafine-grained microstructures exhibit markedly enhanced wear resistance relative to the coarse-grained counterpart.…”

Section: Discussionmentioning

confidence: 99%

Enhancing Corrosion and Wear Resistance of AA6061 by Friction Stir Processing with Fe78Si9B13 Glass Particles

et al. 2015

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The AA6061-T6 aluminum alloy samples including annealed Fe78Si9B13 particles were prepared by friction stir processing (FSP) and investigated by various techniques. The Fe78Si9B13-reinforced particles are uniformly dispersed in the aluminum alloy matrix. The XRD results indicated that the lattice parameter of α-Al increases and the preferred orientation factors F of (200) plane of α-Al reduces after friction stir processing. The coefficient of thermal expansion (CTE) for FSP samples increases at first with the temperature but then decreases as the temperature further increased, which can be explained by the dissolving of Mg and Si from β phase and Fe78Si9B13 particles. The corrosion and wear resistance of FSP samples have been improved compared with that of base metal, which can be attributed to the reduction of grain size and the CTE mismatch between the base metal and reinforced particles by FSP, and the lubrication effect of Fe78Si9B13 particles also plays a role in improving wear resistance. In particular, the FSP sample with reinforced particles in amorphous state exhibited superior corrosion and wear resistance due to the unique metastable structure.

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“…The direct current plasma nitriding (DCPN) or conventional plasma nitriding (CPN), also known as ionic nitriding is a nitriding process, where the samples to be nitrided receives a plasma discharge [25,37,38]. In this technique, nitrogen atoms are introduced at high temperature (400-650 °C) on the surface of samples [39][40][41][42]. The process transforms the phase composition at the surface of samples.…”

Section: Direct Current Plasma Nitridingmentioning

confidence: 99%

Synthesis of TiN and TiO2 thin films by cathodic cage plasma deposition: a brief review

Abreu

Naeem

Borges

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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The cathodic cage plasma deposition (CCPD) is an advanced technique recently developed from an active screen plasma nitriding system, which has been used for thin film deposition such as titanium nitride and titanium dioxide (TiO 2). These coatings can improve the physical, mechanical, and optical properties of numerous materials, and such coatings can be developed by several techniques. Unfortunately, the conventional deposition techniques exhibit certain drawbacks, including high cost, the complexity of the operation, very low pressure, and high processing temperature; as a result, CCPD is an advantageous technique. In this review, brief information on the deposition of titanium nitride and oxide coatings on steel alloys, titanium, glass, and silicon substrates, and the effect of control parameters on deposition efficiency is provided. The effectiveness of this system for the synthesis of thin films on various substrates, including insulators and conductors, is also summarized. The recent developments and applications of CCPD for titanium-based coatings are described in detail.

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Microstructure and wear properties of AISI M2 tool steel on RF plasma nitriding at different N2–H2 gas compositions

Cited by 58 publications

References 40 publications

EFFECT OF NITROGEN HYDROGEN RATIO ON PLASMA NITRIDING FOR 38CrMoAl

EFFECT OF NITROGEN HYDROGEN RATIO ON PLASMA NITRIDING FOR 38CrMoAl

Enhancing Corrosion and Wear Resistance of AA6061 by Friction Stir Processing with Fe78Si9B13 Glass Particles

Synthesis of TiN and TiO2 thin films by cathodic cage plasma deposition: a brief review

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