Tribological and microstructural characteristics of ion-nitrided steels

Spalvins, T.

doi:10.1016/0040-6090(83)90500-x

Cited by 36 publications

(18 citation statements)

References 4 publications

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“…12). Spalvins [17] and many others [18][19][20] have observed that the relatively high concentration of Cr (>5 wt%) in solid solution promotes the precipitation of Cr nitrides. If the concentration is higher than 10%, an abrupt steep decrease in the hardness profile was observed [18][19][20].…”

Section: As-sintered Specimensmentioning

confidence: 99%

Dry sliding of plasma-sintered iron—The influence of nitriding on wear resistance

Pavanati

Straffelini

Maliska

et al. 2008

Wear

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Section: As-sintered Specimensmentioning

confidence: 99%

Dry sliding of plasma-sintered iron—The influence of nitriding on wear resistance

Pavanati

Straffelini

Maliska

et al. 2008

Wear

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“…Previous studies [11][12][13] showed that some nitrided steels used for gears were very promising for space applications, where vacuum is a very important environment factor to influence friction and wear behavior of materials. Spalvins [14] investigated the influence of phase structures of the compound layer on friction coefficient of the nitrided layer in vacuum and revealed that the c-Fe 4 N phase has a lower coefficient of friction than the e-Fe 2-3 N phase. Also, other study from the same author showed the ion nitrided steel displayed a significant reduction in the coefficient of friction as compared with the unnitrided steel, and the predominant wear mechanism for ion nitrided surface was abrasive wear in vacuum [15].…”

Section: Introductionmentioning

confidence: 99%

A Study of Friction and Wear Behavior of Nitrided Layer on 2cr13 Steel in Vacuum

Yang

Liu

et al. 2010

Tribol Lett

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Tribological characteristics and wear mechanisms of gas-nitrided layer on a 2Cr13 steel in vacuum were investigated using a pin-on-disk type tribometer under self-mating dry sliding conditions with various normal loads and sliding velocities. The wear mechanisms involved were investigated by microscopic observations of the worn surfaces, the wear debris, and the corresponding cross sections. Experimental results show that for both sliding velocities of 0.2 and 1.6 m s -1 , friction forces are relatively stable in the case of lower loads (B50 N), whereas become unstable and show high fluctuations under higher loads ([50 N). Wear mechanisms of the nitrided layer in vacuum are different for the lower and the higher sliding velocities. In the former case, mild abrasive wear dominates. In the latter case, a transition takes place from mild adhesive wear to severe adhesive or even delamination wear, with increasing normal load from 10 to 90 N.

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“…Heating a single work piece at a time and energy savings due to a shorter process time are the most important advantages of the method (Cho and Lee, 1980;Spalvins, 1983;Robino and Inal, 1983).…”

Section: Introductionmentioning

confidence: 99%

Investigation of properties of ion‐nitrided AISI 304 austenitic‐stainless steel

Şahin

Sevil²

2011

Industrial Lubrication and Tribology

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Purpose -The aim is to provide detailed mechanical and metallurgical examinations of ion-nitrided austenitic-stainless steels. Design/methodology/approach -Austenitic-stainless steel was the material chosen for the present study. Ion nitriding process was applied to fatigue and tensile samples prepared by machining. Process temperature was 5508C and treatment time period 24 and 60 h. Then, tensile, fatigue, notch-impact, hardness tests were applied and metallographic examinations were performed. Findings -High temperature and longer treatment by ion nitriding decreased fatigue and tensile strengths together with notch-impact toughness. Scanning electron microscopy and energy dispersive X-ray spectroscopy analysis revealed formation of nitrides on the sample surfaces. Surface hardness increased with an increase in process time due to diffusion of nitrogen during ion nitriding.Research limitations/implications -It would be interesting to search the different temperature and time intervals of the ion nitriding. It could be a good idea if future work could be concentrated on ion nitriding on welded stainless steels. Practical implications -Surfaces of mechanical parts are exposed to higher stress and abrasive forces compared to inside mechanical parts during the time period that mechanical components carry out their expected functions. When stresses and forces exceed the surface strength limit of the material, cracks begin to form at the material surface leading to abrasion and corrosion. Therefore, surface strength of materials needs to be increased to provide a longer service life. Ion (plasma) nitriding is a possible remedy for surface wear. Originality/value -The main value of this paper is to contribute and fulfil the detailed mechanical and metallurgical examinations of ion-nitrided austenitic-stainless steels that are being studied so far in the literature.

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Tribological and microstructural characteristics of ion-nitrided steels

Cited by 36 publications

References 4 publications

Dry sliding of plasma-sintered iron—The influence of nitriding on wear resistance

Dry sliding of plasma-sintered iron—The influence of nitriding on wear resistance

A Study of Friction and Wear Behavior of Nitrided Layer on 2cr13 Steel in Vacuum

Investigation of properties of ion‐nitrided AISI 304 austenitic‐stainless steel

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