Kinetic analysis of direct current field enhanced salt bath nitriding

Zhou, Zhenghua; Hu, Jing

doi:10.1179/1743294415y.0000000076

Cited by 7 publications

(6 citation statements)

References 14 publications

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“…The formation of a composite layer (white layer) and alloy nitride particles in the diffusion zone are responsible for the improvement of the properties in the samples nitrided by this technique [29][30][31][32][33][34]. This technique is beneficial because of operation simplicity, good quality, and a lower cost for its use [29,35]. However, it exhibits certain drawbacks: the control of the salt chemical composition, the environmental problems related to waste disposal, and the disposal of the washing water (due to toxic chemicals) [36].…”

Section: Conventional Nitriding Techniquesmentioning

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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Section: Conventional Nitriding Techniquesmentioning

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 relationship between square of compound layer thickness and treating time is shown in Figure 3, which illustrates a linear dependence. As was agreed that the formation of compound layer in plasma treatment is a diffusion process, the diffusion coefficient of N atoms can be calculated by equation ( 4) [11,12]…”

Section: Kinetics Analysismentioning

confidence: 99%

Kinetics comparison between plasma oxynitriding and plasma nitriding and the application for AISI 1045 steel

Miao

Liu

et al. 2018

Surface Engineering

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Plasma oxynitriding (PON) and plasma nitriding (PN) were carried out for AISI 1045 steel, and kinetics of the two cases were analysed and compared. Kinetics equations of d = 4.16 × 10 −3 exp ( − 1666.67/T)t √ and d = 1.87 e (−27333/T) t √ were obtained for PON and PN, respectively, which illustrates that much higher nitrogen diffusion coefficient and much lower activation energy for PON. Meanwhile, the reliability of obtained kinetics equations were verified by checking the agreement between the calculated compound layer thickness and those measured from the cross-sectional microstructures. The results confirmed the practicability of the kinetics equations.

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“…Salt bath nitriding is a kind of valuable chemical heat treatment widely used for steels to obtain the required properties [1][2][3]. Compared with other nitriding technologies, salt bath nitriding has obvious advantages, such as with better quality and lower cost [4][5][6]. After salt bath nitriding, a compound layer is formed, which can significantly improve the performance of metal [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Salt Bath Preoxidation and Air Preoxidation for Salt Bath Nitriding

Mei

Dai

et al. 2019

Acta Metall Slovaca

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<p class="AMSmaintext1">Salt bath preoxidation was primarily conducted prior to salt bath nitriding, and the effect on salt bath nitriding was compared with that of conventional air preoxidation. Characterization of the modified surface layer was made by means of optical microscopy, scanning electron microscope (SEM), micro-hardness tester and x-ray diffraction (XRD). The results showed that the salt bath preoxidation could significantly enhance the nitriding efficiency. The thickness of compound layer was increased from 13.3μm to 20.8μm by salt bath preoxidation, more than 60% higher than that by conventional air preoxidation under the same salt bath nitriding parameters of 560℃ and 120min. Meanwhile, higher cross-section hardness and thicker effective hardening layer were obtained by salt bath preoxidation, and the enhancement mechanism of salt bath preoxidation was discussed.</p>

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Kinetic analysis of direct current field enhanced salt bath nitriding

Cited by 7 publications

References 14 publications

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

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

Kinetics comparison between plasma oxynitriding and plasma nitriding and the application for AISI 1045 steel

Comparison of Salt Bath Preoxidation and Air Preoxidation for Salt Bath Nitriding

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