Characterization of the oxides formed at 1000°C on the AISI 316L stainless steel—Role of molybdenum

Buscail, Henri; Messki, S. El; Riffard, F.; Perrier, S.; Cueff, R.; Caudron, Éric; Issartel, Christophe

doi:10.1016/j.matchemphys.2008.04.054

Cited by 57 publications

(41 citation statements)

References 42 publications

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“…The activation energy value of Cr 3? diffusion in polycrystalline Cr 2 O 3 is in the range between 250 and 290 kJ mol -1 as reported previously [27,[37][38][39][40][41][42]. Thus, the scale-growth process was largely controlled by the outward diffusion of Cr through the Cr 2 O 3 layer.…”

Section: Discussionsupporting

confidence: 76%

Cyclic Oxidation Behavior of IN 718 Superalloy in Air at High Temperatures

et al. 2010

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Ni-base superalloy IN 718 was cyclically oxidized in laboratory air at temperatures ranging from 750 to 950°C for up to 12 cycles (14 h/cycle). The kinetic behaviour as well as the surface morphology, and the oxide phases of the scales were characterized by means of weight gain measurements, cyclic oxidation kinetics, scanning electron microscopy equipped with energy dispersive spectroscopy (SEM-EDS), and X-ray diffraction (XRD) analysis techniques. The results showed that as the oxidation temperature increased, the oxidation rate, the external scale thickness, and internal oxidation zone increased. It was suggested that the oxidation rate was controlled by the diffusion of substrate elements in the alloy and the inward diffusion of oxygen through the oxide scale. The oxidation kinetics followed a sub-parabolic rate law and, the activation energy of oxidation was 249 ± 20 kJ mol -1 . The scaling process was controlled mainly by the diffusion of chromium, titanium, manganese, and oxygen ions through the chromia scale. IN 718 showed low weight gain and very slow reaction rates of substrate elements at 750°C. At 850°C, a continuous and very thin oxide scale was formed. At 950°C, XRD and EDS-elemental mapping analysis revealed that a complex oxide scale had formed. It consisted of an outermost layer of TiO 2 -MnCr 2 O 4 spinels, inner layer of Cr 2 O 3 , and the inner most layer composed of Ni 3 Nb enriched with Nb, Ti and Al oxides underneath the chromia layer. The oxide scale at this temperature seemed to be thicker layer, significant spallation and volatilization had apparently occurred, and greater internal corrosion was identified. The doping effect of titanium was observed, where it was found to be diffused through the chromia scale to form TiO 2 at the oxide-gas interface as well as internally and at the oxide alloy interface.

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Section: Discussionsupporting

confidence: 76%

Cyclic Oxidation Behavior of IN 718 Superalloy in Air at High Temperatures

et al. 2010

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“…FeCr 2 O 4 and the alloy are the only phases observed on the diffraction pattern due to the complete hematite scale spallation during cooling. In situ XRD results at 1000°C, in dry air, were already presented in a previous paper [13]. It was shown that Mn 1.5 Cr 1.5 O 4 and Cr 2 O 3 were detected on the alloy surface all along the oxidation test in dry air and after cooling to room temperature.…”

Section: In Situ X-ray Diffraction Results In Wet Air At 1000°csupporting

confidence: 60%

“…It has been demonstrated that molybdenum plays a similar protective role as the one provided by silicon. In dry air, it hinders iron oxidation and leads to a better keying of the chromia scale in the alloy [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Influence of water vapour on 316L oxidation at high temperature - in situ X-Ray diffraction

Buscail¹,

Rolland²,

Perrier³

2015

Ann. Chim. Sci. Mat.

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-Water vapour mixed with air (10 vol.% H 2 O) has little effect on the AISI 316L stainless steel oxidation under isothermal conditions at 800 and 900 °C. The oxide scale is composed of Cr 2 O 3 and Mn 1.5 Cr 1.5 O 4 located at the external interface. Results show that the presence of water lowers the specimen's mass gain. At 1000 °C, the effect of water vapour on the scale structure is deleterious. In situ X-ray diffraction permits to show that the breakaway is due to iron oxidation starting after about 30 hours. This leads to an external Fe 2 O 3 scale growth and an internal multilayered FeCr 2 O 4 scale formation.

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“…The surface of nanocomposite was covered by thin passive layer with very good adherence to the 800 900 1000 1100 1200 1300 1400 1500 composite substrate, containing besides iron oxides additionally chromium oxides, whereas in the thick, porous layer of scale, characterized by poor adhesion to 316L steel, hematite and magnetite rich in nickel dominated, what was confirmed by the results of the studies [9][10][11][12][13].…”

Section: Resultssupporting

confidence: 58%

Oxidation process of the steel/nc-TiC nanocomposites

Figiel

Biedunkiewicz

Grzesiak

2011

J Therm Anal Calorim

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Ceramic composites are widely used in various technologies such as tool production, aerospace technology, and nuclear power engineering. Their key features are considerable hardness and resistance to wear and corrosion at high temperature. Because many ceramic nanocomposites are designed to work at high temperature, it is important to determine their high temperature corrosion resistance. The subject of the investigation in this study were nanocomposite MMC (metal matrix composite) materials. As matrix the 316L stainless steel was used and the filler (nanoparticles) was nc-TiC. Using carbonized and purified nc-TiC particles the technology of the production of the nanocomposite structures based on the selective laser melting (SLM) technology was worked out. The MCP HEK Realizer II device was applied. The particles have been depicted by TEM method, whereas characterization of structure and particles size was performed by XRD method. The results of investigations on oxidation process of the steel/ncTiC nanocomposites in dry air have been presented. TG-DSC measurements were carried out under non-isothermal conditions at linear change of samples temperature in time and under isothermal conditions. MS method was used to determine evolved gaseous products.

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Characterization of the oxides formed at 1000°C on the AISI 316L stainless steel—Role of molybdenum

Cited by 57 publications

References 42 publications

Cyclic Oxidation Behavior of IN 718 Superalloy in Air at High Temperatures

Cyclic Oxidation Behavior of IN 718 Superalloy in Air at High Temperatures

Influence of water vapour on 316L oxidation at high temperature - in situ X-Ray diffraction

Oxidation process of the steel/nc-TiC nanocomposites

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