Corrosion Science最新文献

英文中文

Corrosion morphology evolution and numerical modeling of Q500qENH weathering steel welds under salt-spray exposure 盐雾暴露下Q500qENH耐候钢焊缝腐蚀形貌演变及数值模拟

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

Corrosion Science

Pub Date : 2025-04-02 DOI: 10.1016/j.corsci.2025.112908

Kun Tang , Qinghua Zhang , Chuang Cui , Xiaopeng Yuan , Yan Ma , Yingfang Yang

To investigate the corrosion evolution of Q500qENH welded joints in a neutral salt-spray environment, 36 butt-weld specimens were subjected to corrosion tests for 20 d, 40 d, and 60 d. The macro- and microscopic characteristics of the corroded surfaces, along with the mass loss variation curves, were obtained to analyze the progressive corrosion behavior of the heat-affected zone (HAZ) and base material. Using noncontact surface morphology measurements and MATLAB-based statistical analysis, key pit parameters, such as pit depth and depth-to-diameter ratio, were extracted to characterize the evolution of corrosion morphology. The reliability of the pit depth extraction algorithm was verified by comparing its results with actual depths measured using a 3D profilometer. Additionally, a numerical reconstruction approach, integrating statistical modeling with secondary development in ABAQUS, enabled the simulation of corrosion pit initiation, merging, and growth. The strong agreement between experimental and simulated results confirmed the method’s reliability, providing insights into localized corrosion mechanisms and long-term durability assessment of welded joints in engineering applications.

为了研究 Q500qENH 焊接接头在中性盐喷雾环境中的腐蚀演变，对 36 个对接焊缝试样进行了 20 d、40 d 和 60 d 的腐蚀试验，获得了腐蚀表面的宏观和微观特征以及质量损失变化曲线，以分析热影响区 (HAZ) 和母材的渐进腐蚀行为。利用非接触式表面形态测量和基于 MATLAB 的统计分析，提取了凹坑深度和深度直径比等关键凹坑参数，以描述腐蚀形态的演变特征。通过将凹坑深度提取算法的结果与使用三维轮廓仪测量的实际深度进行比较，验证了该算法的可靠性。此外，通过在 ABAQUS 中集成统计建模和二次开发的数值重建方法，可以模拟腐蚀坑的形成、合并和增长。实验和模拟结果之间的高度一致证实了该方法的可靠性，为工程应用中的局部腐蚀机制和焊接接头的长期耐久性评估提供了见解。

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引用次数: 0

Inhibiting corrosion of aluminum alloy 7075 beneath a thin liquid film containing Aspergillus terreus 在含有土曲霉的薄液体膜下抑制7075铝合金的腐蚀

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

Corrosion Science

Pub Date : 2025-04-02 DOI: 10.1016/j.corsci.2025.112912

Hongwei Liu , Jiongming Chen , Zhi Wang , Ruoling Liu , Yi Zhang , Yansheng Yin , Xiaogang Chen , Guozhe Meng , Shaojia Fan

In this work, fungal corrosion and inhibition behaviors of aluminum alloy 7075 beneath a thin liquid film were systematically investigated. Results demonstrate that Aspergillus terreus significantly accelerates localized corrosion with a high value of 4.693 mm/y which is 22.45 times the abiotic control. The addition of octadecylamine (OD), benzalkonium chloride (BKC), and imidazoline derivative (IM) effectively mitigates fungal corrosion by forming an inhibitor film and inhibiting the biological activity of A. terreus. The antifungal efficiency of IM is better, i.e., 91.5%. Antifungal uniform corrosion of IM is better while BKC possesses a higher inhibition efficiency (92.2%) for localized corrosion.

本文系统地研究了7075铝合金在液体薄膜下的真菌腐蚀和抑制行为。结果表明，土曲霉显著加速了局部腐蚀，达到4.693 mm/y，是非生物对照的22.45倍。十八乙胺（OD）、苯扎氯铵（BKC）和咪唑啉衍生物（IM）的加入通过形成缓蚀剂膜，有效地抑制了A. terreus的生物活性，减轻了真菌的腐蚀。IM的抑菌效率较好，为91.5%。IM的抗真菌均匀腐蚀效果较好，而BKC对局部腐蚀的抑制效率更高（92.2%）。

引用次数: 0

Pitting corrosion mechanisms of Ti-Cu-(Pd-) based metallic glasses in simulated physiological solution Ti-Cu-(Pd-)基金属玻璃在模拟生理溶液中的点蚀机理

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

Corrosion Science

Pub Date : 2025-04-02 DOI: 10.1016/j.corsci.2025.112913

Viktoriia Shtefan , Nora Fernández Navas , Ivan Kaban , Martin Hantusch , Annett Gebert

Ti-based bulk metallic glasses with very high strength-to-stiffness ratio are promising candidates for biomedical applications. However, their substantial Cu contents cause biocompatibility issues regarding cytocompatibility and corrosion resistance. This work focuses on the analysis of chloride ion-induced pitting corrosion processes of two prominent glassy alloys under free corrosion and anodic polarisation conditions in phosphate-buffered saline (PBS) solution (pH 7.4) at 37 °C. The Ti₄₇Zr_7.5Cu₃₈Fe_2.5Sn₂Si₁Ag₂ glass demonstrates high susceptibility to passive film degradation and breakdown during long-term testing under OCP condition and upon anodic polarisation (LVA). Electrochemical Impedance Spectroscopy (EIS) indicates the formation of a porous, non-continuous surface film with low resistance. The shape of the anodic polarisation by charging curves (APCC) indicates a limited ability for pit repassivation. The Ti₄₀Zr₁₀Cu₃₄Pd₁₄Sn₂ glass exhibits higher resistance to pitting corrosion, which alters the nature of surface degradation. Surface state analysis by means of SEM, EDX, XRD and XPS reveal that the corrosion products within the pits and their surroundings are enriched in Cu, Zr and Pd. Mechanisms for the development of pitting corrosion for the two alloys, including nanoligament formation and advanced degradation, are proposed and especially the role of Cu and Pd therein is discussed. These findings provide valuable insights into the corrosion mechanisms of Ti-Cu based glassy alloys and serve as a base for developing corrosion resistance strategies.

钛基块状金属玻璃具有极高的强度-刚度比，是生物医学应用的理想候选材料。然而，其大量的铜含量会导致细胞相容性和耐腐蚀性方面的生物相容性问题。本研究重点分析了 37 °C、磷酸盐缓冲盐水（PBS）溶液（pH 值 7.4）中自由腐蚀和阳极极化条件下两种主要玻璃合金的氯离子诱导点蚀过程。Ti47Zr7.5Cu38Fe2.5Sn2Si1Ag2 玻璃在 OCP 条件下和阳极极化 (LVA) 条件下的长期测试中表现出极高的被动膜降解和击穿敏感性。电化学阻抗谱（EIS）显示形成了多孔、非连续的低电阻表面膜。阳极极化充电曲线（APCC）的形状表明凹坑再钝化能力有限。Ti40Zr10Cu34Pd14Sn2 玻璃具有更高的抗点蚀能力，从而改变了表面降解的性质。通过 SEM、EDX、XRD 和 XPS 进行的表面状态分析表明，凹坑内及其周围的腐蚀产物富含铜、锆和钯。提出了这两种合金点蚀的发展机理，包括纳米结构的形成和高级降解，特别是讨论了铜和钯在其中的作用。这些发现为了解基于 Ti-Cu 的玻璃基合金的腐蚀机理提供了宝贵的见解，并为制定抗腐蚀策略奠定了基础。

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引用次数: 0

In-situ formation mechanism and long-term isothermal oxidation behaviors at 1400 °C and 1500 °C of (Nb,Ti,Mo)Si2-(Ti,Nb,Mo)5Si3 biphasic compositionally-complex ceramic composite coating on C103 alloy C103合金（Nb,Ti,Mo）Si2-(Ti,Nb,Mo)5Si3双相复合陶瓷复合涂层在1400 ℃和1500 ℃的原位形成机理和长期等温氧化行为

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

Corrosion Science

Pub Date : 2025-04-01 DOI: 10.1016/j.corsci.2025.112914

Xin Wang , Wei Zhang , Tingyang Wang , Tao Yang , Chengxu Han , Fan Yang

A novel (Nb,Ti,Mo)Si₂-(Ti,Nb,Mo)₅Si₃ biphasic composite coating was in-situ prepared on C103 alloy via vacuum reactive sintering. The coating kept intact after oxidation at 1400℃ and 1500℃ for 100 h, respectively, and its oxidation behaviors were governed by the selective oxidation process of elements within the silicides. The coating formed a composite oxide film featuring amorphous SiO₂ as the “cement” and spherical TiO₂ particles as the “aggregate particles”. After oxidation at 1500℃ for 100 h, the surface phase of the coating transformed into (Nb,Mo)Si₂. Coating degradation initiated at the grain boundaries of NbSi₂ in the lower part of the coating.

采用真空反应烧结技术在C103合金上原位制备了新型（Nb,Ti,Mo）Si2-(Ti,Nb,Mo)5Si3双相复合涂层。涂层分别在1400℃和1500℃氧化100 h后保持完整，其氧化行为受硅化物中元素的选择性氧化过程控制。涂层形成了以无定形SiO2为“水泥”，球形TiO2颗粒为“聚集体”的复合氧化膜。在1500℃下氧化100 h后，涂层表面相转变为（Nb,Mo）Si2。涂层降解始于涂层下部NbSi2晶界处。

引用次数: 0

Effect of nitriding on the corrosion of Ti64 in purified pressurized water at 300 °C 氮化对Ti64在300℃纯净水中腐蚀的影响

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

Corrosion Science

Pub Date : 2025-04-01 DOI: 10.1016/j.corsci.2025.112901

Cyriac Christophe , Quentin Auzoux , Frantz Martin , Frédéric Datcharry , Stéphane Coindeau , Laurence Latu-Romain , Yves Wouters

Exposure of surface-nitrided Ti64 alloy in purified primary water at 300 °C and 4.2 L.h⁻¹ (1 mm.s⁻¹) led to the oxidation of Ti₂N to anatase and rutile TiO₂. A corrosion mechanism was proposed. The corrosion rate was estimated by combining mass variation with image analysis of oxides amounts. It decreased down to approximately 0.7 µm.year⁻¹ in 151 days and was lower than for untreated Ti64. Approximately 20 % of the corroded material was dissolved and evacuated to the water. The evolution of the TiO₂ layer thickness was consistent with a Loriers-Haycock type model, allowing to predict the material lifetime.

表面氮化Ti64合金暴露在300℃和4.2 L.h−1（1 mm.s−1）的净化原水中，导致Ti2N氧化为锐钛矿和金红石型TiO2。提出了腐蚀机理。通过结合质量变化和氧化物量的图像分析来估计腐蚀速率。它减小到约0.7 µm。第151天，低于未处理Ti64组。大约20% %的腐蚀材料被溶解并被抽到水中。TiO2层厚度的演变符合Loriers-Haycock型模型，可以预测材料的寿命。

引用次数: 0

Corrosion behavior in lead-bismuth eutectic of 316 L stainless steels fabricated by laser-based powder bed fusion and powder metallurgy-hot isostatic pressing 激光粉末床熔合-粉末冶金-热等静压法制备316 L不锈钢铅铋共晶的腐蚀行为

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

Corrosion Science

Pub Date : 2025-04-01 DOI: 10.1016/j.corsci.2025.112911

Zaiqing Que , Pedro A. Ferreirós , Jisheng Li , Yanfei Wang , Litao Chang , Weijia Gong , Xianzong Wang

The corrosion behavior of laser-based powder bed fused (LPBF) 316 L under various heat-treatment conditions (as-printed, solution annealed and hot isostatic pressed) in lead-bismuth eutectic (LBE) at 550 °C is studied. The wrought 316 L and counterpart fabricated by powder metallurgy-hot isostatic pressing (PM-HIP) were investigated as references. LPBF 316 L achieves reduced susceptibility to the LBE environment and acquires a shallower corrosion/dissolution depth in comparison to wrought and PM-HIP 316 L. As-printed and hot isostatic pressed LPBF specimens show restricted discernible phase transformation while the other conditions exhibit significant phase transformation. The enhanced corrosion resistance of LPBF 316 L in LBE is attributed to a dislocation cellular microstructure, a high proportion of low-angle grain boundaries, and elevated chromium and silicon contents. Dislocation cell boundaries and twin boundaries have higher resistance to LBE ingress than the high-angle grain boundaries. Compared to the matrix, the preferential corrosion by LBE of LPBF materials at columnar boundaries is related to the carbides and (Si, Mn) enriched oxides formed during LPBF process. LPBF-HIP material exhibits a three-dimensional alternating structure of recrystallized and unrecrystallized areas, effectively impeding LBE ingress and thus can be a promising candidate as the structural material in the LBE system.

研究了激光基粉末床熔融（LPBF） 316 L在不同热处理条件下（印刷、固溶退火和热等静压）在550℃铅铋共晶（LBE）中的腐蚀行为。研究了粉末冶金-热等静压（PM-HIP）法制备的316 L合金及其同类材料。与锻造和PM-HIP 316 L相比，LPBF 316 L降低了对LBE环境的敏感性，获得了更浅的腐蚀/溶解深度。在印刷和热等静压条件下，LPBF试样的相变明显受限，而在其他条件下相变明显。LPBF 316 L在LBE中的耐蚀性增强是由于位错胞状组织、高比例的低角晶界以及铬和硅含量的提高。位错晶界和孪晶界比大角度晶界具有更高的抗LBE侵入性。与基体相比，LPBF材料在柱状边界处的优先腐蚀与LPBF过程中形成的碳化物和（Si, Mn）富氧化物有关。LPBF-HIP材料表现出再结晶和非再结晶区域的三维交替结构，有效地阻挡了LBE的进入，因此可以作为LBE体系中很有前途的结构材料。

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引用次数: 0

Enhanced oxidation resistance of nanocrystalline ODS ferritic alloy in high-temperature steam through addition of a small amount of Si 通过添加少量的Si来增强纳米晶ODS铁素体合金在高温蒸汽中的抗氧化性

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

Corrosion Science

Pub Date : 2025-03-31 DOI: 10.1016/j.corsci.2025.112906

Lidong Xu , Xuecheng Cai , Baoru Sun , Tongde Shen

Nanocrystalline (NC) oxide-dispersion-strengthened (ODS) alloys with a high fraction of grain boundaries (GBs) have recently been demonstrated with significantly improved performance, such as ultra-high strength, high creep resistance and irradiation tolerance, in comparison to conventional coarse-grained ODS alloys. Here, we report an enhanced high-temperature steam oxidation resistance of a Zr-Si co-alloyed NC ferritic ODS alloy (14YWTZS, with a nominal composition of Fe-14Cr-3W-0.4Ti-0.8Zr-0.3Y₂O₃-1Si (wt%)) developed by our research group, and reveal the oxidation mechanism in terms of the oxide scale evolution through detailed microstructural analysis. The oxidation behaviors of ultrafine-grained (UFG) 14YWT, Zr-alloyed NC 14YWTZ and Zr-Si co-alloyed NC 14YWTZS ferritic ODS alloys are comparatively investigated in high-temperature steam at 650 °C. The Zr-alloyed NC 14YWTZ alloy shows significantly enhanced oxidation resistance when compared with the UFG 14YWT alloy. This improvement is primarily attributed to the high-fraction GBs, which serves as short-circuits for the outward diffusion of selective solutes (mainly Cr). The oxidation resistance is further improved by alloying 1 wt% Si, forming a dense oxide scale accompanying with a continuous SiO₂ inner layer. The SiO₂ inner layer results mainly from the short-circuit transport of the segregated Si along the GB-network, facilitating the formation of a continuous SiO₂ layer at the early oxidation stage. This work demonstrates the synergy of composition design (low content Si alloying) and microstructure refinement (Zr alloying-induced nanocrystallization) for the development of high-temperature oxidation-resistant NC ODS alloys, which are suitable for extremely hostile conditions in future advanced nuclear reactors.

具有高晶界分数（GBs）的纳米晶（NC）氧化物弥散强化（ODS）合金最近被证明与传统的粗晶ODS合金相比，具有显著改善的性能，如超高强度、高抗蠕变和耐辐照性。本文报道了课外组开发的Zr-Si共合金NC铁素ODS合金（14YWTZS，标称成分为Fe-14Cr-3W-0.4Ti-0.8Zr-0.3Y2O3-1Si (wt%)）的高温蒸汽抗氧化性增强，并通过详细的显微组织分析揭示了氧化机制。对比研究了超细晶（UFG） 14YWT、zr -合金NC 14YWTZ和Zr-Si共合金NC 14YWTZS铁素体ODS合金在650 ℃高温蒸汽中的氧化行为。与UFG 14YWT合金相比，zr合金NC 14YWTZ合金的抗氧化性能显著增强。这种改善主要归功于高分数的gb，它作为选择性溶质（主要是Cr）向外扩散的短路。通过将1 wt% Si合金化，进一步提高了材料的抗氧化性，形成了致密的氧化层，并伴有连续的SiO2内层。SiO2内层主要是由于偏析的Si沿gb网络短路输运，有利于在氧化初期形成连续的SiO2层。这项工作证明了成分设计（低含量Si合金化）和组织细化（Zr合金化诱导纳米晶化）对高温抗氧化NC ODS合金开发的协同作用，该合金适用于未来先进核反应堆的极端恶劣条件。

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引用次数: 0

An efficient screening of dissolution modulators of Mg alloys: Combining high-throughput multi-well exposure with topographical quantification of volume loss and pitting corrosion 镁合金溶解调制剂的有效筛选：结合高通量多井曝光与体积损失和点蚀的地形量化

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

Corrosion Science

Pub Date : 2025-03-31 DOI: 10.1016/j.corsci.2025.112903

Ci Song , Bahram Vaghefinazari , Tim Wüerger , Anna Lisitsyna , Di Mei , Maria Nienaber , Jan Bohlen , Mikhail L. Zheludkevich , Shadi Albarqouni , Christian Feiler , Sviatlana V. Lamaka

Experimental exploration of the vast number of potentially effective organic inhibitors presents a major bottleneck in finding suitable alternatives for chromate-based corrosion inhibitors as the quantities of these organic compounds are essentially infinite. To tackle this challenge, a multi-well experimental method for corrosion inhibitor screening has been proposed in this work. The inhibition effect and pitting factor of 229 potential inhibitors were determined by profilometric analysis using the high-throughput experiment. The accuracy is validated by traditional gravimetric weight loss analysis. The obtained results indicate that the developed approach is of great significance in accelerating the discovery and application of dissolution modulators.

大量潜在有效的有机抑制剂的实验探索提出了一个主要的瓶颈，在寻找合适的替代品的色谱基腐蚀抑制剂，因为这些有机化合物的数量基本上是无限的。为了应对这一挑战，本研究提出了一种多井缓蚀剂筛选实验方法。采用高通量实验，通过轮廓分析法确定了229种潜在抑制剂的缓蚀效果和点蚀因子。通过传统的失重分析验证了该方法的准确性。结果表明，该方法对加速溶解调节剂的发现和应用具有重要意义。

引用次数: 0

Creep deformation and fracture of Ni-based alloy GH3535 in molten FLiNaK and Ar environment ni基合金GH3535在熔融flak和Ar环境中的蠕变变形与断裂

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

Corrosion Science

Pub Date : 2025-03-31 DOI: 10.1016/j.corsci.2025.112902

Xiaoli Li , Litao Chang , Wenjun Liang , Chengpeng Liu , Zhijun Li , Yumiao Wang , Bin Leng

The creep deformation and fracture behavior of GH3535 alloy under varying stresses (190–270 MPa) in 700 °C molten FLiNaK salt and argon environments were systematically investigated. Under each experimental stress, specimens in molten FLiNaK salt exhibit lower fracture life and elongation compared to those in argon, with the disparity becoming more pronounced as the applied stress decreases. The alloy show a combination of ductile overload failure and intergranular fracture in both environments, whereas intergranular fracture is more pronounced in the molten salt environment. Notably, crack density and depth are greater in the molten salt environment due to its corrosive nature.

系统地研究了GH3535合金在700℃熔融熔融盐和氩气环境下190 ~ 270 MPa变应力下的蠕变变形和断裂行为。在不同的实验应力下，熔融FLiNaK盐中的试样的断裂寿命和伸长率均低于氩气中的试样，且随着外加应力的减小，这种差异越来越明显。合金在两种环境下均表现为韧性过载破坏和沿晶断裂的结合，而在熔盐环境下，沿晶断裂更为明显。值得注意的是，在熔盐环境中，由于其腐蚀性，裂纹密度和深度更大。

引用次数: 0

A novel (Ho0.2Er0.2Tm0.2Yb0.2Lu0.2)2Zr2O7 high-entropy ceramic with excellent CMAS corrosion resistance for thermal barrier coatings 一种新型（Ho0.2Er0.2Tm0.2Yb0.2Lu0.2）2Zr2O7高熵陶瓷，具有优异的CMAS耐蚀性

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

Corrosion Science

Pub Date : 2025-03-31 DOI: 10.1016/j.corsci.2025.112904

Lingxu Yang , Fangkun Xie , Haojun Geng , Liankui Wu , Huijun Liu , Chaoliu Zeng

A novel high-entropy rare-earth zirconate (HE-REZ) ceramic composed of five rare-earth elements with smaller radius was firstly designed and successfully synthesized in this work. The microstructure, phase composition, thermal properties and CMAS corrosion behavior of the (Ho_0.2Er_0.2Tm_0.2Yb_0.2Lu_0.2)₂Zr₂O₇ were also characterized. Results show that the as-prepared HE-REZ displays single-phase defective fluorite-type structure with excellent lattice stability, lower thermal conductivity (1.57 W·m⁻¹·K⁻¹ at 1000 °C), and higher CTE (10.96 ×10⁻⁶·K⁻¹ at 1000 °C). Moreover, it possesses excellent CMAS corrosion resistance with an average corrosion rate of 2.5 µm/h at 1300 ℃ within 20 h. Therefore, the novel (Ho_0.2Er_0.2Tm_0.2Yb_0.2Lu_0.2)₂Zr₂O₇ high-entropy ceramic would be a promising material for thermal barrier coatings.

本文首次设计并成功合成了一种由5种半径较小的稀土元素组成的新型高熵稀土锆酸盐（HE-REZ）陶瓷。研究了（Ho0.2Er0.2Tm0.2Yb0.2Lu0.2）2Zr2O7的显微组织、相组成、热性能和CMAS腐蚀行为。结果表明，制备的HE-REZ具有优异的晶格稳定性、较低的导热系数（1000 ℃时为1.57 W·m−1·K−1）和较高的CTE（1000 ℃时为10.96 ×10−6·K−1）。具有优异的抗CMAS腐蚀性能，在1300℃下，在20 h内的平均腐蚀速率为2.5 µm/h。因此，新型（Ho0.2Er0.2Tm0.2Yb0.2Lu0.2）2Zr2O7高熵陶瓷是一种很有前途的热障涂层材料。

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