Corrosion Science最新文献

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Ultrahigh tribocorrosion resistance of hydrogenated amorphous carbon coating via trace gradient W incorporation 掺入微量梯度 W 的氢化无定形碳涂层的超强耐摩擦腐蚀性能

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-06 DOI: 10.1016/j.corsci.2024.112504

Yingpeng Zhang , Xiaohui Zhou , Rende Chen , Wei Yang , Peng Guo , Kazuhito Nishimura , Xiaowei Li , Aiying Wang

In this work, we manipulated the trace gradient W incorporation combined with a increment top-layer thickness for the hydrogenated amorphous carbon (a-C:H) coating on thermally sprayed WC-based cermet. The tribocorrosion resistance of the modified a-C:H coating was investigated in terms of structural evolution during friction under 3.5 wt% NaCl solution. Regardless of introduction of gradient W doping, although the a-C:H coating maintained the sp²/sp³ atomic bond structure, the stress reduction and plasticity increase were obtained for coatings. Moreover, the stable open-circuit potential revealed that the tribocorrosion resistance of modified coating was significantly improved, as identified by the quite low wear rate and coefficient of friction at 1.46×10⁻⁸ mm³/N·m and COF of 0.067, respectively. Different with the traditional failure of worn-out and pitting corrosion of a-C:H coating in chloride solution, the designed robust interfaces and the functional top-layer enabled the coating to withstand longest sliding distance over 2100 m at heavy contacting pressure of 1.67 GPa. These observations offer the promising strategy to fabricate advanced carbon-based coatings with required extremely strong wear resistance and anticorrosion capability for mechanical components used in harsh marine environment.

在这项工作中，我们在热喷涂碳化钨基金属陶瓷的氢化无定形碳（a-C:H）涂层中加入了微量梯度 W，并增加了表层厚度。在 3.5 wt% 的 NaCl 溶液中，通过摩擦过程中的结构演变研究了改性 a-C:H 涂层的耐摩擦腐蚀性。尽管 a-C:H 涂层保持了 sp2/sp3 原子键结构，但无论引入何种梯度 W 掺杂，涂层都获得了应力减小和塑性增加的效果。此外，稳定的开路电位表明，改性涂层的耐摩擦腐蚀性能显著提高，磨损率和摩擦系数分别为 1.46×10-8 mm3/N-m和 0.067 COF，磨损率和摩擦系数相当低。与传统的 a-C:H 涂层在氯化物溶液中的磨损和点蚀失效不同，设计的坚固界面和功能性表层使涂层在 1.67 GPa 的重接触压力下能够承受超过 2100 米的最长滑动距离。这些观察结果为制造具有极强耐磨性和防腐能力的先进碳基涂层提供了可行的策略，可用于恶劣海洋环境中使用的机械部件。

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引用次数: 0

Enhanced thermal insulation and corrosion resistance in Ni-Fe cermet through incorporation of high-entropy spinel oxides 通过加入高熵尖晶石氧化物增强镍铁合金的隔热性和耐腐蚀性

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-05 DOI: 10.1016/j.corsci.2024.112505

Yong He, Hui-wen Xiong, Ke-chao Zhou, Xiao Kang, Lei Zhang

The influence of high-entropy spinel oxide (HESO) content on the microstructure, electrical conductivity, and high-temperature corrosion resistance of HESO/NiFe cermets were investigated. The results found that the addition of 10–30 wt% HESO enhanced sintering densification and thermal insulation, although it also resulted in reduced electrical conductivity. Isothermal oxidation tests conducted at 900 °C for 10 hours revealed that cermets containing 30–50 wt% HESO exhibited significantly lower weight gains (0.954–1.167 mg cm⁻²) and oxidation rate constants (0.1057–0.1525 mg² cm⁻⁴ h⁻¹). Furthermore, static corrosion tests in AlF₃-KF-Al₂O₃ molten salt demonstrated that HESO effectively mitigated the erosion of the metallic phase by the fluoride molten salt. This study holds significant potential by providing new insights for the design of inert anodes for aluminum electrolysis and exploring the practical applications of high-entropy oxide materials.

研究了高熵尖晶石氧化物（HESO）含量对 HESO/NiFe 金属陶瓷的微观结构、导电性和耐高温腐蚀性的影响。结果发现，添加 10-30 wt% 的 HESO 可提高烧结致密性和隔热性，但同时也会降低导电性。在 900 °C 下进行 10 小时的等温氧化测试表明，含有 30-50 wt% HESO 的铁锰铁合金的增重（0.954-1.167 mg cm-²）和氧化速率常数（0.1057-0.1525 mg² cm-⁴ h-¹）明显较低。此外，在 AlF₃-KF-Al₂O₃熔盐中进行的静态腐蚀测试表明，HESO 能有效减轻氟化熔盐对金属相的侵蚀。这项研究为铝电解惰性阳极的设计提供了新的见解，并探索了高熵氧化物材料的实际应用，具有重大潜力。

引用次数: 0

Enhanced oxidation resistance in nano-lamellar CoCrFeNiNbx (0.45 ≤ x ≤ 0.55) eutectic high entropy alloy during cyclic oxidation at 700–1100 °C 在 700-1100 °C 循环氧化过程中增强纳米层状 CoCrFeNiNbx (0.45 ≤ x ≤ 0.55) 共晶高熵合金的抗氧化性

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-05 DOI: 10.1016/j.corsci.2024.112497

Deepsovan Mondal, Jayanta Das

We report the superior oxidation resistance of nano-lamellar CoCrFeNiNb_x (x = 0.45, 0.50, 0.55 atom ratio) eutectic high entropy alloy (EHEA) at 700–1100 °C. The as-cast microstructure comprises of nano-lamellar eutectic FCC+Laves phases. The oxidation kinetics followed the parabolic rate in between 700–800 °C, whereas, near-parabolic kinetics is followed at 900 °C. The addition of Nb improves the oxidation and spallation resistance of the EHEAs. A protective outer-oxide layer containing Cr₂O₃, FeCr₂O₄-type spinels, whereas, an inner-oxide layer containing Nb₂O₅, CrNbO₄ were formed during oxidation. The mechanism of protection and the superiority of EHEAs as high temperature alloy are explored.

我们报告了纳米板层钴铬铁镍铌（x = 0.45、0.50、0.55 原子比）共晶高熵合金（EHEA）在 700-1100 °C条件下的优异抗氧化性。铸造时的微观结构由纳米层状共晶 FCC+Laves 相组成。氧化动力学在 700-800 °C 之间呈抛物线速率，而在 900 °C 时则接近抛物线速率。铌的加入提高了 EHEA 的抗氧化性和抗剥落性。在氧化过程中形成了含有 Cr2O3、FeCr2O4 型尖晶石的保护性外氧化层，以及含有 Nb2O5、CrNbO4 的内氧化层。本文探讨了 EHEAs 作为高温合金的保护机制和优越性。

引用次数: 0

Conditional generative adversarial network-based predictive method for crack initiation in a dual-phase austenite stainless weld 基于条件生成对抗网络的双相奥氏体不锈钢焊缝裂纹萌生预测方法

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-04 DOI: 10.1016/j.corsci.2024.112494

Yule Wu, Jiamei Wang, Xianglong Guo, Lefu Zhang

A novel integration approach of a conditional generative adversarial network (cGAN) with an improved electro-chemo-mechanical (E−C−M) model was developed to calculate the localised electrochemistry and evaluate the stress corrosion cracking (SCC) crack initiation properties in high-temperature water. The results demonstrate the superior accuracy, computational efficiency and robust generalisation capabilities of the hybrid method. High-temperature electrochemical tests were conducted to validate and optimize the E−C−M model for calculating the stress induced corrosion behavior of austenite stainless steel (ASS) in high-temperature water. The SCC initiation test results corroborate the predicted corrosion current distribution on ASS with a dual-phase structure.

研究人员开发了一种新颖的条件生成对抗网络（cGAN）与改进的电化学-机械（E-C-M）模型的集成方法，用于计算高温水中的局部电化学并评估应力腐蚀开裂（SCC）的裂纹起始特性。结果表明混合方法具有卓越的准确性、计算效率和强大的概括能力。为了验证和优化用于计算高温水中奥氏体不锈钢（ASS）应力诱导腐蚀行为的 E-C-M 模型，进行了高温电化学测试。SCC 引发试验结果证实了具有双相结构的 ASS 上预测的腐蚀电流分布。

引用次数: 0

Enhanced corrosion resistance of NbTaMoW medium entropy alloy coatings in simulated PEMFC environments: Experimental and computational insights 增强 NbTaMoW 中熵合金涂层在模拟 PEMFC 环境中的耐腐蚀性：实验和计算见解

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-03 DOI: 10.1016/j.corsci.2024.112499

Minming Jiang , Jiang Xu , Chaowei Liu , Zong-Han Xie , Paul R. Munroe

An anti-corrosive and conductive NbTaMoW medium entropy alloy (MEA) coating was deposited on 304 stainless steel using a dual-cathode glow discharge technology. This MEA coating exhibits a single body-centered cubic phase with about 10 nm grains, and forms a passivation film with significantly enhanced corrosion resistance at any given HF concentration. The lower adsorption energy of Nb atoms for oxygen atoms leads to the enrichment of Nb oxides in the passivation film, which is beneficial for hindering the rapid diffusion of F⁻ ions. These findings underscore the potential of NbTaMoW MEA coatings to improve the durability and efficiency of PEMFCs.

利用双阴极辉光放电技术在 304 不锈钢上沉积了一层抗腐蚀导电 NbTaMoW 中等熵合金 (MEA) 涂层。这种 MEA 涂层呈现出单体中心立方相，晶粒约为 10 nm，在任何给定的 HF 浓度下都能形成耐腐蚀性能显著增强的钝化膜。铌原子对氧原子的吸附能较低，导致钝化膜中的铌氧化物富集，有利于阻碍 F 离子的快速扩散。这些发现强调了 NbTaMoW MEA 涂层在提高 PEMFC 的耐用性和效率方面的潜力。

引用次数: 0

In situ growth of large-scale and ultrathin carbon nitride films shield common metal substrates from corrosion and oxidation 原位生长大规模超薄氮化碳薄膜，保护普通金属基底免受腐蚀和氧化

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-03 DOI: 10.1016/j.corsci.2024.112501

Liangliang Xiong , Huaning Jiang , Mengxue Wu , Yongji Gong , Xiaoqiang Fan , Minhao Zhu

A centimeter-size carbon nitride (CN) film, with nanoscale thickness, is in situ deposited on various metals through the thermal condensation of melamine, achieving broad and uniform coverage, without any pre- and post-treatments. As the temperature rises, the nitrogen content in the film increases, leading to the part of CN to transform into g-C₃N₄. Benefit from higher Gibbs adsorption free energies of g-C₃N₄ with Cl^- and O₂ in aqueous environment, a 30 nm CN film deposited at 475 ℃ with large g-C₃N₄ network, minimal segregation and low internal stress enables pure metals and alloys to achieve over 90 % protection efficiency.

通过三聚氰胺的热凝结，在各种金属上原位沉积出厚度为纳米级的厘米级氮化碳（CN）薄膜，实现了广泛而均匀的覆盖，且无需任何前处理和后处理。随着温度的升高，薄膜中的氮含量增加，导致部分 CN 转化为 g-C3N4。得益于 g-C3N4 在水环境中对 Cl- 和 O2 较高的吉布斯吸附自由能，在 475 ℃ 下沉积的 30 nm CN 薄膜具有较大的 g-C3N4 网络、最小的偏析和较低的内应力，使纯金属和合金的保护效率达到 90% 以上。

引用次数: 0

Corrosion behavior of Laves precipitates in FeCrAl-1Nb alloy at 290 °C and 7 MPa: The size effect and critical role of pH FeCrAl-1Nb 合金中的 Laves 沉淀在 290 °C 和 7 MPa 下的腐蚀行为：尺寸效应和 pH 值的关键作用

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-03 DOI: 10.1016/j.corsci.2024.112498

Yunhan Hu, Yunhan Ling, Weipeng Wang, Fan Zhao, Zhengjun Zhang

The corrosion behavior of Laves precipitates in FeCrAl-1Nb alloy was investigated in four different deoxygenated solutions at 290 °C and 7 MPa. The Laves precipitates exhibit potential size effect during corrosion in a weak alkaline solution: the microscale precipitates undergo oxidation with amorphization and element dissolution, and these phenomena are not observed in nanoscale precipitates. The corrosion of nanoscale precipitates is less insensitive to slight changes in pH; however, micro-galvanic corrosion was observed between some nanoscale precipitates and the ferrite phase. Deuterium isotope labeling experiments observed hydrogen enrichment in some oxidized precipitates.

在 290 °C 和 7 MPa 的四种不同脱氧溶液中研究了铁铬铝铌合金中 Laves 沉淀的腐蚀行为。拉维斯沉淀物在弱碱性溶液中的腐蚀过程中表现出潜在的尺寸效应：微尺度沉淀物在氧化过程中会发生非晶化和元素溶解，而在纳米尺度沉淀物中则观察不到这些现象。纳米级沉淀物的腐蚀对 pH 值的微小变化不太敏感；不过，在一些纳米级沉淀物和铁素体相之间观察到了微电蚀作用。氘同位素标记实验在一些氧化沉淀物中观察到氢富集。

引用次数: 0

Agricultural by-product of rapeseed meal extract as a highly efficient inhibitor for aluminum corrosion in HCl media: Experimental and theoretical studies 农副产品菜籽粕提取物作为盐酸介质中铝腐蚀的高效抑制剂：实验和理论研究

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-03 DOI: 10.1016/j.corsci.2024.112500

Simei Yang , Shuduan Deng , Gaofei Wei , Yujie Qiang , Bokai Liao , Dake Xu , Min Tang , Juan Xu , Xianghong Li

The inhibition performance of rapeseed meal extract (RME) on aluminum corrosion in HCl media was evaluated using weight loss method, electrochemical measurements, and surface characterizations. It is found that RME dramatically enlarges the charge transfer resistance of electrochemical reaction by inhibiting the cathodic reaction. RME can spontaneously adsorb on the aluminum surface to form a protective film, and this adsorptive behavior is consistent with Langmuir adsorption isotherm model. In addition, this adsorptive film with low fraction free volume (FFV) and self-diffusion coefficient (self-D) can strongly retard aluminum corrosion in HCl media with the highest inhibition efficiency of 99.0 %.

利用失重法、电化学测量和表面特性分析评估了菜籽粕提取物（RME）在盐酸介质中对铝腐蚀的抑制性能。研究发现，菜籽粕提取物通过抑制阴极反应，显著增大了电化学反应的电荷转移电阻。RME 能自发地吸附在铝表面形成一层保护膜，这种吸附行为与 Langmuir 吸附等温线模型一致。此外，这种吸附膜具有较低的自由体积分数（FFV）和自扩散系数（self-D），能在盐酸介质中强力延缓铝的腐蚀，抑制效率最高可达 99.0%。

引用次数: 0

In vitro corrosion mechanism of biodegradable Mg-Zn-Gd alloy 可生物降解镁锌钆合金的体外腐蚀机理

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-02 DOI: 10.1016/j.corsci.2024.112495

Baoxue Zhou , Hua Huang , Hongwei Miao , Jun Wang , Zhongchang Wang , Deli Wang , Hui Zeng , Guangyin Yuan

The corrosion mechanisms of a high-anticorrosive Mg-Zn-Gd alloy have been unveiled. Numerous particles were observed and identified as anodic W phase. Nevertheless, due to a small potential difference between the secondary phase and Mg matrix, and the nanoscale size and dispersed distribution of the particles, no serious pitting would occur. The segregation of Zn in the MgO layer was found to be favorable for the compactness of the whole corrosion layer. The preferential corrosion of W phase should be partly responsible for this segregation. A new method has been presented to develop Mg alloys with high corrosion resistance by alloying.

揭示了高抗蚀性 Mg-Zn-Gd 合金的腐蚀机理。研究人员观察到了大量颗粒，并将其确定为阳极 W 相。尽管如此，由于次生相与镁基体之间的电位差很小，加上颗粒的纳米级尺寸和分散分布，不会出现严重的点蚀。研究发现，氧化镁层中的锌偏析有利于整个腐蚀层的致密性。W 相的优先腐蚀应该是造成这种偏析的部分原因。研究提出了一种通过合金化开发具有高耐腐蚀性的镁合金的新方法。

引用次数: 0

Analysis of the evolution process of corrosion products of pure magnesium based on the phase angle 基于相角的纯镁腐蚀产物演变过程分析

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science

Pub Date : 2024-10-02 DOI: 10.1016/j.corsci.2024.112492

Yuantai He , Liang Wu , Wenhui Yao , Yuan Yuan , Rongqian Wu , Guozhi Wu , Jingfeng Wang , Fusheng Pan

The process of immersion corrosion on pure magnesium in 0.1 M NaCl solution was investigated by the phase angle. Results show that the peak value of phase angle and responding frequency of peak can be used to characterize the evolution process of corrosion products. It is before 80 min that corrosion products increase on the surface until film layers formed. The theoretical relation between the phase angle and corrosion products was established and the simulated results had a good agreement with the validation experiment data. Moreover, the evolution mechanism of corrosion products was studied by Scanning Vibrating Electrode Technique.

通过相角研究了纯镁在 0.1 M NaCl 溶液中的浸泡腐蚀过程。结果表明，相角的峰值和峰值的响应频率可以用来表征腐蚀产物的演变过程。在 80 分钟之前，腐蚀产物在表面增加，直至形成膜层。建立了相角与腐蚀产物之间的理论关系，模拟结果与验证实验数据吻合良好。此外，还利用扫描振动电极技术研究了腐蚀产物的演变机理。

引用次数: 0

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