Effect of nitrogen content on corrosion behavior of high-nitrogen austenitic stainless steel

Gao, Fengyin; Qiao, Yanxin; Chen, Jian; Yang, Lanlan; Zhou, Huiling; Zheng, Zhibin; Zhang, Lianmin

doi:10.1038/s41529-023-00394-x

Cited by 13 publications

(2 citation statements)

References 69 publications

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“…However, because of the corrosive effects of Cl − in seawater, the service life of austenitic stainless steel (ASS) is significantly reduced, and the material surface is damaged from localized corrosion [6,7]. In contrast, the increasing nitrogen content in HNSS could enhance the passivation capacity of metallic materials, forming more stable and dense passive films with a reduction in the corrosion rate [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cl− on Passivation Properties of Fe-20Cr-20Mn-0.75N High Nitrogen Austenitic Stainless Steel

Zhang,

Gao,

Zhou

et al. 2024

Coatings

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In this work, Fe-20Cr-20Mn-0.75N (wt.%) high-nitrogen stainless steel (HNSS) was studied using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and electrochemical testing. The corrosion behaviors of Fe-20Cr-20Mn-0.75N HNSS with different concentrations of NaCl were studied. The composition of a passive film on Fe-20Cr-20Mn-0.75N HNSS was analyzed using X-ray photoelectron spectroscopy (XPS) at an applied potential of 0.2VSCE. The results showed that, with the increase in Cl− concentration, the corrosion tendency and corrosion rate of Fe-20Cr-20Mn-0.75N HNSS get higher. In the solution of a low Cl− concentration, the fraction of Fe and Cr oxides in the passive film is higher, and the passive film is thicker and more stable. By increasing the stability of the passive film and preventing its rupture, the elevated NH4+ concentration can enhance the corrosion resistance of Fe-20Cr-20Mn-0.75N HNSS in a NaCl solution.

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Section: Introductionmentioning

confidence: 99%

Effect of Cl− on Passivation Properties of Fe-20Cr-20Mn-0.75N High Nitrogen Austenitic Stainless Steel

Zhang,

Gao,

Zhou

et al. 2024

Coatings

Self Cite

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“…Moreover, Dai et al [16] demonstrated that nitrogen significantly enhances the corrosion resistance of 316 L stainless steel in a thiosulfate-chlorine solution by promoting the formation of chromium oxide and iron oxide in the passive film. Gao et al [17] reported a higher proportion of stable oxides, such as chromium oxide, in the passivation film of high-nitrogen stainless steel. The results also revealed that the content of ammonium ions is higher in high-nitrogen stainless steel, effectively inhibiting passive film breakdown and pitting.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen on the Corrosion Resistance of 6Mo Super Austenitic Stainless Steel

Tian,

Wang,

Liu

et al. 2024

Metals

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6Mo super austenitic stainless steel (SASS) with nitrogen contents of 0.2 and 0.4 (wt.%) was melted, and solution treatments at 1100, 1180, and 1250 °C for 30 min were performed. The effects of nitrogen on the microstructure and pitting resistance of the two steels that signed as 0.2N and 0.4N samples were investigated. At a heat-treatment temperature of 1180 °C, the alloy demonstrates the highest corrosion resistance, attributed to the combined effects of grain size and precipitates. The structure of the passivation film changes with increasing nitrogen content, with the Cr/Fe ratio is significantly higher in the 0.4N sample compared to the 0.2N sample. Moreover, the increase in nitrogen content results in thicker Cr and Mo oxide layers and higher levels of NH3 and NH4+, thereby improving the corrosion resistance of the stainless steel.

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Effects of Pressure on Nitrogen Content and Solidification Structure during Pressurized Electroslag Remelting Process with Composite Electrode

Suo,

Liu,

Kang

et al. 2024

steel research int.

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The nitrogen content and solidification structure of the 1Mn18Cr18N ingots produced by the customized laboratory‐scale vacuum induction melting furnace and the pressure electroslag remelting furnace (PESR) with novel composite electrode under different pressure and the same power consumption are compared and studied. The results show that there are perfectly uniform radial chromium and nitrogen profiles during the PESR process. The nitrogen uptake reaction in the PESR process with composite electrode takes place on the liquid metal film on the electrode. Nitrogen uptake could be improved by increasing the nitrogen partial pressure. In addition, the basin depth at a pressure of 0.1 and 1.22 MPa is about 41 and 38 mm, the angle of the grains with respect to the vertical axis is 35° and 31°, respectively. The flat metal basin profile resulted from the thermal resistance at the slag–mold interface decreasing with increasing pressure. Primary and secondary dendritic arm spacing (PDAS and SDAS) variations exhibit an increasing and subsequently decreasing the trend as they move further away from the center in a horizontal direction. Both PDAS and SDAS decrease with increasing pressure from 0.1 to 1.22 MPa.

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Effect of nitrogen content on corrosion behavior of high-nitrogen austenitic stainless steel

Cited by 13 publications

References 69 publications

Effect of Cl− on Passivation Properties of Fe-20Cr-20Mn-0.75N High Nitrogen Austenitic Stainless Steel

Effect of Cl− on Passivation Properties of Fe-20Cr-20Mn-0.75N High Nitrogen Austenitic Stainless Steel

Effect of Nitrogen on the Corrosion Resistance of 6Mo Super Austenitic Stainless Steel

Effects of Pressure on Nitrogen Content and Solidification Structure during Pressurized Electroslag Remelting Process with Composite Electrode

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