Control Gas Nitriding Process: A Review

Nam, Nguyen Duong; Xuan, Nguyen Anh; Bạch, Nguyễn Văn; Nhung, Le Thi; Chieu, Le Thi

doi:10.26480/jmerd.01.2019.17.25

Cited by 11 publications

(6 citation statements)

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“…Gas nitriding [ 17 , 18 , 19 ] (also known as conventional nitriding) requires a furnace with controlled pressure and an atmosphere containing N 2 or NH 3 molecules. The piece to be treated is introduced into the furnace.…”

Section: Nitriding With Plasma Implantation and Gasmentioning

confidence: 99%

“…The nitriding treatments reviewed here have proved very successful in hardening metal surfaces while retaining their core structure. This strategy allows for improving surface resistance and structural integrity as long as the pieces are not set at a temperature above the treatment temperature [ 19 , 53 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ]. Hence, while nitriding has been extensively operated on steels and titanium alloys, as illustrated here, superalloy treatments, although efficient, are less interesting as most aeronautic applications use high temperatures [ 35 , 36 , 59 ].…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

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Low Temperature Nitriding of Metal Alloys for Surface Mechanical Performance

Drouet

Bourhis

2023

Materials

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Metallic alloys are, by essence, ductile and stiff and can support loads without sudden rupture. This ductility becomes a disadvantage when applications require wear resistance. In this case, the hardening of the surface is required while retaining a core performance. Here, nitriding at low temperatures has proven to be beneficial and has potential. In fact, any phase transitions or unwanted compound precipitations that occur at higher temperatures have to be avoided as they would have a deleterious effect on the chemical homogeneity and mechanical properties. The present contribution summarizes the achievements made with such treatments on metallic alloys. We considered the most popular treatments, namely plasma, implantation, and gas nitridings.

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Section: Nitriding With Plasma Implantation and Gasmentioning

confidence: 99%

Section: Conclusion and Prospectsmentioning

confidence: 99%

Low Temperature Nitriding of Metal Alloys for Surface Mechanical Performance

Drouet

Bourhis

2023

Materials

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“…The first works on nitriding were written in the 19th century, but interest in this process increased only in the early 20th century, both from the point of view of basic and utilitarian research [ 1 , 2 , 3 ]. Currently, practical applications include gas nitriding and nitriding under glow discharge conditions.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Selected Process Parameters on the Efficiency of the Process of Gas Nitriding of AISI 1085 Steel

Frączek,

Prusak,

Michalski

et al. 2024

Materials

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The main aim of the manuscript was to investigate the impact of modifying the parameters of the gas nitriding process of samples made from AISI 1085 steel on the course and results of the process carried out in a chemical reactor allowing for thermogravimetric measurements. The tested steel was subjected in a chemical reactor to the process of gas nitriding in the temperature range of 490–580 °C, using different sample heating rates (in the range of 1–25 °C/min) and various mixtures of nitriding gases (pure NH3, or NH3 with the addition of H2 or N2). To assess the impact of the tested process parameters on its efficiency, the thickness of the nitrided layers produced, the change in sample mass, the structure of the phases produced, the phase composition and the microhardness were examined. For the research methodology used, it was found that reducing the amount of NH3 and/or using H2 or N2 admixtures adversely affects the thickness of the nitride layers produced. At the same time, the use of a lower maximum process temperature with the same gas mixture resulted in a significant difference in the thickness of the layers. It was also found that the use of pure NH3 or a gas mixture (NH3 + H2) with higher NH3 contents resulted in higher surface microhardnesses of the samples and that for these samples, the hardness increased to a greater depth.

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“…This layer is responsible for the improved surface hardness and wear resistance of the treated steel. The thickness and properties of the nitride layer can be controlled by adjusting process parameters such as temperature, time, and the composition of the nitrogen-rich atmosphere [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Gas Nitriding Parameters on Microstructure and Mechanical Properties of DIN 1.2367 Hot Work Tool Steel

Ari¹

2023

IJANSER

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This study investigated the hardness and wear on DIN 1.2367 hot work tool steel after applying gas nitriding processes under different conditions. The impact of the gas nitriding nitrogen potential and retention time was investigated in the group of specimens. The nitriding time and potential nitrogen values in the group had changed, and the diffusion depth and hardness distribution were found to be close. In addition, wear mechanisms were investigated. As the nitriding time and nitrogen potential increase, the wear becomes more brittle. As a result, it was observed that the wear tracks were wider.

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Control Gas Nitriding Process: A Review

Cited by 11 publications

References 0 publications

Low Temperature Nitriding of Metal Alloys for Surface Mechanical Performance

Low Temperature Nitriding of Metal Alloys for Surface Mechanical Performance

The Influence of Selected Process Parameters on the Efficiency of the Process of Gas Nitriding of AISI 1085 Steel

Effect of Gas Nitriding Parameters on Microstructure and Mechanical Properties of DIN 1.2367 Hot Work Tool Steel

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