Mechanical and tribological properties of AISI 304 stainless steel nitrided by glow discharge compared to ion implantation and plasma immersion ion implantation

Foerster, C.E.; Serbena, Francisco Carlos; Silva, S.L.R. da; Lepienski, C.M.; Siqueira, C.J. de M.; Ueda, M.

doi:10.1016/j.nimb.2007.01.266

Cited by 66 publications

(16 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The nitriding process modifies the running-in regime and even for the integrated sliding distance of 9 m, a stationary regime similar to that for untreated samples is not reached. In a previous reported result for AISI 304 nitrided at richer nitrogen atmosphere (N 2 :H 2 -60:40), Foerster et al 9 reported similar friction coefficient profiles for high working temperatures. Figure 6 shows the SEM images of the tracks, at half length, produced by the ball sliding during tribological tests, for both steels treated at 300 and 500 °C.…”

Section: Tribological Behaviormentioning

confidence: 66%

“…The ion beam nitriding processes promotes the presence of embedded nitride precipitates at the surface. The hardness of the modified layers can reach values up to 15 GPa, while untreated austenitic steels have a hardness of about 2-3 GPa 9 . The modified surface layer thickness, degree of roughness and hardness depend on process parameters (atmosphere composition, working temperature and processing time).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A comparative study of mechanical and tribological properties of AISI-304 and AISI-316 submitted to glow discharge nitriding

Nascimento¹,

Foerster²,

Silva³

et al. 2009

Mat. Res.

View full text Add to dashboard Cite

cannot be applied. The mechanical response for external loads is then better simulated by instrumented indentation performed on ion beam modified surfaces rather than on cross-sections.In the present work we report a comparative study about structural, mechanical and tribological properties of AISI 304 and AISI 316 stainless steels submitted to nitrogen glow discharge at different substrate temperatures from 300 to 500 °C. Structural characterization was evaluated by X ray diffraction (Bragg-Brentano geometry) using Rietveld refinement. Hardness, elastic modulus profiles and surface topography were obtained by instrumented indentation. Conventional Vickers measurements were also employed in order to obtain deeper hardness profiles. Tribological and wear behavior were studied by reciprocating sliding tests. Experimental ProcedureCommercial sheets of AISI 304 (Ni 8.63%, Cr 16.04%, C 0.047%, Si 0.48%, Mn 1.37%, S 0.005%, Mo 0.09%, P 0.029% weight, with Fe being the balance) and commercial rods of AISI 316 (Ni 11.64%, Cr 15.68%, C 0.10%, Si 0.34%, Mn 1.73%, S 0.031%, Mo 1.86%, P 0.029% weight with Fe being the balance) were cut in 1.5 x 1.5 x 0.5 cm and φ = 3 cm and 0.5 cm thick pieces, respectively. The samples were mechanically polished up to ¼ µm diamond paste in order to obtain a final mirror finish.DC glow discharge was performed in N 2 :H 2 -20:80 atmosphere at 600 Pa with prior H 2 sputtering at 100 °C during 2 hours. The plasma current ranged from 200 to 300 mA, resulting in sample ensembles with substrate temperatures of 300, 400 and 500 °C. The temperature was controlled by monitoring a backside thermocouple and adjusting the plasma current as needed. All samples were nitrided during four hours. Mechanical and tribological properties of AISI 304 and AISI 316 stainless steels submitted to glow discharge ion nitriding are reported. The atmosphere was 20:80 -N 2 :H 2 with substrate temperatures ranging from 300 to 500 °C. Treatment at 300 °C produced expanded austenite (γ N ) in both steels. Increasing the temperature, the phases γ′-Fe 4 N and ε-Fe 2+x N were present and the latter is the major phase for AISI 304. At 500 °C, the CrN phase was also identified in both steels. Hardnesses of about 13-14 GPa at near surface regions were obtained in both steels. Moreover, AISI 316 nitrided at 500 °C has the deepest hard layer. Tribological tests showed that wear can be reduced by up to a factor of six after the nitriding processes, even for a working temperature of 300 °C. The profiles during and after nanoscratch tests did not reveal significant differences after nitriding processes in both steels.

show abstract

Section: Tribological Behaviormentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

A comparative study of mechanical and tribological properties of AISI-304 and AISI-316 submitted to glow discharge nitriding

Nascimento¹,

Foerster²,

Silva³

et al. 2009

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…In particular, low-temperature plasma nitriding (<420°C) of austenitic stainless steels such as AISI 304 or 316L results in formation of a metastable austenite phase supersaturated with nitrogen atoms (nitrogen concentration is [20][21][22][23][24][25][26][27][28][29][30] ) and exhibits significant improvement in substrate hardness while the wear resistance is enhanced by several orders of magnitude (Menthe et al, 2000). What is more, some authors attribute γN excellent anticorrosive properties (Fossati et al, 2006b).…”

Section: General Informationmentioning

confidence: 99%

Direct Current and Pulsed Direct Current Plasma Nitriding of Ferrous Materials a Critical Review

Łępicka

Grądzka-Dahlke

2016

Acta Mechanica Et Automatica

View full text Add to dashboard Cite

Nowadays, the improvement of ferrous materials performance is a problem of high interest. One of well-known wear-and corrosion properties improving technique is plasma nitriding, in which elemental nitrogen is introduced to the surface of a metal part for subsequent diffusion into the material. As a result, a compound, "white" layer and a diffusion zone are formed at the detail's surface. Most of the authors positively describe the effects of surface ion nitiding. On the other hand, there are also reports on adverse effects of direct current and pulsed direct current plasma nitriding on ferrous materials performance. Therefore, an attempt to provide comprehensive summary on direct current and pulsed direct current ion nitriding and its influence on ferrous materials' mechanical and corrosion properties has been made. According to the results, some of the technique drawbacks are hard to avoid in mass production.

show abstract

“…Therefore, the understanding of the friction and wear mechanisms is of great significance on the improvement of reliability and stability of bearings. [13][14][15][16][17][18][19][20][21] In harsh conditions, a conventional lubrication of moving parts is difficult. These moving parts typically operate under dry conditions such as in dust and sand.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Friction and Wear Properties of High-Temperature Bearing Steel 9Cr18Mo

Qu³

et al. 2018

Mat. Res.

View full text Add to dashboard Cite

This paper presented a study of friction and wear on 9Cr18Mo when rubbed against other materials (steel-304, steel-440C, steel-GCr15 or silicon nitride ceramic ball) at high temperature conditions. Friction and wear tests were carried out with universal a friction and wear testing machine. The wear morphology was analyzed by a Nanovea three-dimensional profilometer and trinocular positive Gang metallurgical microscope. The Vickers hardness of 9Cr18Mo at different temperatures was tested by means of a high temperature vacuum hardometer. Results showed that the friction and wear on the contact surface of the 9Cr18Mo sample are higher when the hardness of counter materials is higher than or similar to that of the sample. Under dry sliding conditions, the 9Cr18Mo sample surface presented various degrees of adhesion, plowing and pit, particularly if tested in the presence of a high temperature environment. During the worn stages, the counter materials on the worn surface successively produced cracks, crack growth, and wear debris under the action of load. Moreover, the frictional pair 9Cr18Mo-ceramic showed good anti-wear behavior at 400 °C that proved the anti high temperature performance of 9Cr18Mo.

show abstract

Mechanical and tribological properties of AISI 304 stainless steel nitrided by glow discharge compared to ion implantation and plasma immersion ion implantation

Cited by 66 publications

References 19 publications

A comparative study of mechanical and tribological properties of AISI-304 and AISI-316 submitted to glow discharge nitriding

A comparative study of mechanical and tribological properties of AISI-304 and AISI-316 submitted to glow discharge nitriding

Direct Current and Pulsed Direct Current Plasma Nitriding of Ferrous Materials a Critical Review

Investigation on Friction and Wear Properties of High-Temperature Bearing Steel 9Cr18Mo

Contact Info

Product

Resources

About