Corrosion behavior of single- and poly-crystalline dual-phase TiAl-Ti3Al alloy in NaCl solution

Wang, Dongpeng; Chen, Guang; Wang, Anding; Wang, Yuxin; Qiao, Yanxin; Liu, Zhenguang; Liu, Chang

doi:10.1007/s12613-022-2513-5

Cited by 18 publications

(7 citation statements)

References 49 publications

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“…These results show that HNS struggles to form a relatively dense passive film, while such film readily forms on the surface of ST, which is in a spontaneous passive state [26,27]. The OCP of ST is higher than that of HNS, while the corrosion tendency of ST is slightly lower [28,29]. dense passive film, while such film readily forms on the surface of ST, which is in a spontaneous passive state [26,27].…”

Section: Electrochemical Testsmentioning

confidence: 78%

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Corrosion Behaviors of Fe-22Cr-16Mn-0.55N High-Nitrogen Austenitic Stainless Steel in 3.5% NaCl Solution

Gao

Han

et al. 2022

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In this study, the corrosion behavior of the high-nitrogen austenitic stainless steel (HNS) Fe-22Cr-16Mn-0.55N before and after solution treatment (ST) in 3.5% NaCl solution has been investigated. The effect of a solution temperature of 1100 °C and heat preservation for 30 min on the corrosion resistance and passive film protection of HNS steel was studied. Open-circuit potential, potentiodynamic polarization and electrochemical impedance tests were used to assess the corrosion resistance of treated and untreated steels. In addition, potentiostatic polarization and XPS techniques together with Mott–Schottky curves were applied to determine the composition and properties of the passive films. The results showed that after solution treatment, the grain size of HNS decreased and the grain became more uniform. Although corrosion occurred on HNSs both before and after treatment, solution treatment resulted in greater compactness in passive films, leading to lower carrier density, lower corrosion current density and better corrosion resistance.

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Section: Electrochemical Testsmentioning

confidence: 78%

“…dense passive film, while such film readily forms on the surface of ST, which is in a spontaneous passive state [26,27]. The OCP of ST is higher than that of HNS, while the corrosion tendency of ST is slightly lower [28,29]. Figure 4 shows the potentiodynamic polarization curves of HNS and ST steels.…”

Section: Electrochemical Testsmentioning

confidence: 99%

Corrosion Behaviors of Fe-22Cr-16Mn-0.55N High-Nitrogen Austenitic Stainless Steel in 3.5% NaCl Solution

Gao

Han

et al. 2022

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“…The N 1s spectra showed alterations in the peaks of NH 3 and NH 4 + , further highlighting the inferior protective properties of the passivation film under elevated chloride ion levels. Additionally, the O 1s spectra displayed a decline in the O 2− /OH − peak intensity ratio concomitant with increasing Cl − concentrations, correlating with an enhanced risk of corrosion [46,47]. This showed that the augmentation of Cl − concentration substantially impacted the composition and stability of the passive film, thereby deteriorating its protective efficacy over the substrate [48][49][50].…”

Section: Xps Of the Passive Filmmentioning

confidence: 97%

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

Zhang,

Gao,

Zhou

et al. 2024

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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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“…For passive alloys, the refined grains would promote the formation of uniform passive film due to the micro-galvanic effects of grain and phase boundaries. [58][59][60] Therefore, the corrosion resistance of the passive alloys would decrease with increased grain size owing to the reduced grain and phase boundaries. In such a situation, the increased volume fraction of β phase and grain size have a competitive relation for influencing the corrosion resistance of samples.…”

Section: Influence Of Microstructure On the Corrosion Resistance Of S...mentioning

confidence: 99%

Passivation Behavior of Water‐Quenched and Heat‐Treated Ti–6Al–4V in Hank's Solution

Jin

Zhang

et al. 2023

Adv Eng Mater

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Ti‐6Al‐4V is a prevalent material utilized in various industrial applications, and its microstructure modification commences with quenching, followed by diverse heat treatments. Although many works have concentrated on the mechanical properties of Ti‐6Al‐4V with tailored microstructures resulting from heat treatments, their corresponding corrosion behavior still lacks attention. This study investigates the corrosion behavior of water‐quenched Ti‐6Al‐4V that undergoes heat treatment between 700 °C and 850 °C in Hank’s solution. Various electrochemical methods, such as open circuit potential tests, potentiodynamic/potentiostatic polarization, electrochemical impedance spectroscopy, and Mott‐Schottky tests, were jointly employed. The water‐quenched Ti‐6Al‐4V displays a quick‐cooling microstructure with a plentiful amount of martensite α/α' phase. Heat treatment at 700 °C significantly alters the microstructures of the samples. Due to competitive factors, heat treatment at low temperatures results in uneven alloy composition, leading to poor uniformity of the passive film. At this phase, negative effects dominate, and the corrosion resistance of the samples deteriorates. When the heat treatment temperature increases to 850 °C, the content of β phase, which possesses better corrosion resistance, increases and becomes dominant. Consequently, the corrosion resistance of the samples improves in Hank’s solution.This article is protected by copyright. All rights reserved.

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Corrosion behavior of single- and poly-crystalline dual-phase TiAl-Ti3Al alloy in NaCl solution

Cited by 18 publications

References 49 publications

Corrosion Behaviors of Fe-22Cr-16Mn-0.55N High-Nitrogen Austenitic Stainless Steel in 3.5% NaCl Solution

Corrosion Behaviors of Fe-22Cr-16Mn-0.55N High-Nitrogen Austenitic Stainless Steel in 3.5% NaCl Solution

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

Passivation Behavior of Water‐Quenched and Heat‐Treated Ti–6Al–4V in Hank's Solution

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