Structure and properties of low temperature plasma carburized austenitic stainless steels

Souza, R.M.; Ignat, M.; Pinedo, Carlos Eduardo; Tschiptschin, André Paulo

doi:10.1016/j.surfcoat.2009.04.033

Cited by 45 publications

(22 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This technique was also found to be an efficient technique in the hardening process of austenitic 12,13 and martensitic 14,15 stainless steel due to the sensitization phenomenon above 450 °C in these materials. Furthermore, there are some studies in the literature, which use plasma carburizing at low temperature as a useful method to produce surface layers of pure cementite [16][17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

Plasma Carburizing of Sintered Pure Iron at Low Temperature

et al. 2015

View full text Add to dashboard Cite

In this work, plasma carburizing of sintered pure iron at low temperature was investigated. Samples were carburized under a dc abnormal glow discharge in two mixed atmospheres (5%CH 4 + 95%H 2 and 20%CH 4 + 80%H 2 ) at 500 °C and 700 °C for 3 and 6 hours. The influence of these parameters was investigated by Scan Electron Microscopy (SEM), X-ray Diffraction (DRX), Raman spectroscopy and microhardness measurements. There is a correlation between temperature and layer morphology, and a layer of polycrystalline cementite was obtained at 500 °C and 700 °C on a ferrite substrate. Furthermore, the carburized layer thickness increased with an increase in the treatment time and the methane percentage. The topography is very dependent on the treatment temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

Plasma Carburizing of Sintered Pure Iron at Low Temperature

et al. 2015

View full text Add to dashboard Cite

show abstract

“…After sputtering, the treatments were performed under a fixed gaseous mixture of 93% H 2 and 7% CH 4 at temperatures of 350ºC, 380ºC and 410ºC and times of 1 h, 3 h and 5 h. The samples were cooled inside the chamber until room temperature. The experimental parameters were chosen based on Gallo et al, Sun and Souza et al (Gallo and Dong, 2009;Sun, 2009;Sousa et al, 2009) works and the main aim was to prevent carbide formation during the experiments.…”

Section: Plasma Carburizingmentioning

confidence: 99%

“…When temperature or treatment time are increased, the S phase thickness also increases, but the possibility of forming carbides is higher. Therefore, the objective is to promote the carbon adsorption on the steel surface at sufficiently low temperatures, maximizing the S layer and avoiding the precipitation of carbides, as described in some papers written by Souza et al, Sun, Dong et al and Adachi et al (Sun, 2005;Dong et al, 2006;Sousa et al, 2009;Adachi and Ueda, 2013). In this work, a commercial AISI 304 stainless steel was chosen to be studied under LTPC because few information on the tribological behavior of this alloy is available (Sun, 2005;Dong et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Wear resistance of AISI 304 stainless steel submitted to low temperature plasma carburizing

Barcelos

Filho

et al. 2017

REM, Int. Eng. J.

View full text Add to dashboard Cite

Despite the AISI 304 stainless steel has high corrosion/oxidation resistance, its tribological properties are poor, being one of the barriers for use in severe wear applications. Thus, there is a wide field for studying technologies that aim to increase the surface hardness and wear resistance of this material. In this work, hardness and wear resistance for AISI 304 stainless steel submitted to the thermochemical treatment by low temperature plasma carburizing (LTPC) in a fixed gas mixture composition of 93% H 2 and 7% CH 4 are presented. Through the evaluation of the carburizing layers, it was possible to observe a substantial improvement in tribological properties after all temperature and time of treatment. This improvement is directly related to the increase of the process variables; among them temperature has a stronger influence on the wear resistance obtained using LTPC process.

show abstract

“…However, for pieces that require high dimensional and geometric controls, the use of the high temperatures used in the carburizing treatment becomes a problem, as it leads to a loss of dimensional control 9 . Carburizing treatments at low temperatures has been developed, as described in [10][11][12][13] , for stainless steels to avoid sensitization above 450 °C in these materials, and also for sintered pure iron and automobile gears, again, both to ensure dimensional control 9,14 . Furthermore, the literature contains some studies describing plasma carburizing at low temperatures as a method to produce surface layers of pure cementite [15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

AISI 1005 Steel Plasma Treated by Different Thermochemical Surface Treatments

et al. 2016

View full text Add to dashboard Cite

To modify the surface structure of AISI 1005 steel and its properties without any dimensional loss, different plasma surface treatments were performed at low temperatures (500 °C) in this study. The samples were subjected to single plasma treatments including: nitriding (N5% and N3%), carburizing (CE) and ferritic nitrocarburizing (NC) and to duplex treatments of nitriding followed by carburizing (N5%+CE and N3%+CE) and ferritic nitrocarburizing followed by carburizing (NC+CE). The gas mixture used for these treatments was varied as follows: nitriding (5%N 2 +95%H 2 and 3%N 2 +97%H 2 ), carburizing (5%CH 4 +95%H 2 ) and ferritic nitrocarburizing (5%N 2 +1.5%CH 4 +93.5%H 2 ). A microstructural characterization of the samples was carried out using optical and scanning electron microscopy in addition to XRD analysis. Microhardness testing was also performed. The XRD analysis showed a stabilization of the outermost cementite layer for all of the carburizing treatments. The results show that a greater hardness increase was achieved for the nitriding treatment as well as a more regular compound layer. However, a greater depth of hardening was obtained in samples with NC+CE and N5%+CE, which extended to the hardened depth to 800 μm.

show abstract

Structure and properties of low temperature plasma carburized austenitic stainless steels

Cited by 45 publications

References 17 publications

Plasma Carburizing of Sintered Pure Iron at Low Temperature

Plasma Carburizing of Sintered Pure Iron at Low Temperature

Wear resistance of AISI 304 stainless steel submitted to low temperature plasma carburizing

AISI 1005 Steel Plasma Treated by Different Thermochemical Surface Treatments

Contact Info

Product

Resources

About