Materials and Corrosion-werkstoffe Und Korrosion最新文献

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IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-12-04 DOI: 10.1002/maco.70075

引用次数: 0

Contents: Materials and Corrosion. 11/2025 内容：材料与腐蚀。11/2025

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-11-03 DOI: 10.1002/maco.70065

引用次数: 0

Cover Picture: Materials and Corrosion. 11/2025 封面图片：材料与腐蚀。11/2025

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-11-03 DOI: 10.1002/maco.70063

Cover:

Anti-corrosion coatings are divided into intrinsic self-healing coatings and external self-healing coatings based on the principle of self-healing.

Summarized the multifunctional self-healing coatings, summarized the repair principles, advantages and disadvantages, and applicable environments of different types of coatings.

Pointed out the shortcomings of the current self-healing coatings, and provided valuable suggestions and development directions.

More detailed information can be found in:

Manping Yang, Shiyu Long, Junjie Gao, Jiang Han, Chao Yang, Luyao Shi, Daxin Zhou, Bingfan Li, Application and challenges of self-healing polymer coatings in metal corrosion protection, Materials and Corrosion 2025, 76, 1584.

覆盖：防腐涂料根据自愈原理分为内在自愈涂料和外在自愈涂料。综述了多功能自修复涂料，综述了不同类型涂料的修复原理、优缺点及适用环境。指出了目前自愈涂料存在的不足，并提出了有价值的建议和发展方向。详细资料请见：杨满平，龙士玉，高俊杰，韩江，杨超，石路遥，周大新，李炳凡，自修复聚合物涂层在金属腐蚀防护中的应用与挑战，材料与腐蚀，2015,76,1584。

引用次数: 0

Masthead: Materials and Corrosion. 11/2025 报头：材料与腐蚀。11/2025

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-11-03 DOI: 10.1002/maco.70064

引用次数: 0

Multi-Objective Optimization and Corrosion-Mechanical Analysis of AA2014-T6 Alloy in Friction Stir Processing Using Taguchi-Grey Relational Approach 基于田口灰关联法的AA2014-T6合金搅拌摩擦加工多目标优化及腐蚀力学分析

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-09 DOI: 10.1002/maco.70056

Sangamaeswaran R., Rajendra Boopathy S., Mani N., Palanikumar K.

This study uses friction stir processing (FSP) to enhance the mechanical characteristics and corrosion resistance of AA2014-T6, an area that has often been overlooked in earlier research. Taguchi-Grey Relational Analysis and advanced multi-objective optimization are used to determine the optimal balance under different process conditions. The research focuses on grain refinement and reduced grain boundary precipitates to enhance tensile strength, hardness, and elongation while improving corrosion resistance via fine grains and reduced secondary phase content. Machinability under drilling is also evaluated. Ideal FSP parameters (1000 rpm, 60 mm/min feed, 2° pivot) produced a GRG value of 0.876, confirming performance improvements.

本研究采用搅拌摩擦处理（FSP）来提高AA2014-T6的力学特性和耐腐蚀性，这是早期研究中经常被忽视的一个领域。采用田口灰关联分析和先进的多目标优化方法确定了不同工艺条件下的最优平衡。研究的重点是细化晶粒和减少晶界析出物，以提高抗拉强度、硬度和伸长率，同时通过细化晶粒和减少二次相含量来提高耐腐蚀性。还对钻孔下的可加工性进行了评价。理想的FSP参数（1000 rpm， 60 mm/min进料，2°枢轴）产生的GRG值为0.876，证实了性能的改善。

引用次数: 0

Corrosion Failure Analysis of Heat Exchanger E2111 in the Sour Water Stripping System of the Coal Chemical Industry 煤化工含酸水汽提系统E2111换热器腐蚀失效分析

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-07 DOI: 10.1002/maco.70054

Guofu Ou, Hongzhou Zhang, Li Sun, Zhe Xu, Dexiao Fu

The corrosion failure of heat exchanger E2111 in sour water vaporization system of coal chemical plant was studied. The Aspen Plus software was used to analyze and calculate the corrosive gas composition and equilibrium distribution law of ammonia vapor stripping tower. The results show that the main corrosive gas are CO₂, NH₃, H₂S, and H₂O in the temperature range of 135.1°C–108.6°C in the E2111. The dew-point temperature of the water is 134.4°C, meaning that the H₂O(g) changes into H₂O(l). With the temperature decreasing, the volume fraction of H₂O(l) increases, and the corrosive gases are dissolved in the water causing scouring corrosion of the pipe wall. In the E2111, H₂S and NH₃ partial pressure values can not form the common NH₄HS salt, which causes a large number of pipeline failures. But the process generated NH₂COONH₄ salt, which is regarded as the main source of corrosive medium in this case. After corrosion characterization test, it was found that the composition of the residual corrosion products was consistent with calculation results, and the corrosion prior occurred on the outer wall of the tube, that is, shell side.

对煤化工酸性水汽化系统中E2111换热器的腐蚀失效进行了研究。利用Aspen Plus软件对氨汽提塔腐蚀气体组成及平衡分布规律进行了分析计算。结果表明：E2111在135.1℃~ 108.6℃的温度范围内，主要腐蚀气体为CO2、NH3、H2S和H2O；水的露点温度为134.4℃，即H2O(g)变为H2O(l)。随着温度的降低，H2O(l)的体积分数增大，腐蚀性气体溶解于水中，对管壁产生冲刷腐蚀。在E2111中，H2S和NH3分压值不能形成常见的NH4HS盐，导致大量管道故障。但该过程产生的NH2COONH4盐是本例腐蚀介质的主要来源。经过腐蚀表征试验，发现残余腐蚀产物的组成与计算结果一致，且先前的腐蚀发生在管的外壁，即壳侧。

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引用次数: 0

High-Temperature Galvanic Corrosion Behavior of AZ31B Mg Alloy and ADC12 Al Alloy in Deionized Water AZ31B镁合金和ADC12铝合金在去离子水中的高温电偶腐蚀行为

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-07 DOI: 10.1002/maco.70058

Yinghui Chen, Yan Liu, Hualiang Huang, Jinbei He

In this paper, the high-temperature galvanic corrosion behavior of AZ31B Mg alloy and ADC12 Al alloy in deionized water was investigated using electrochemical methods, weight loss experiments, and surface characterization techniques. The results showed that high temperature and the galvanic effect simultaneously altered the galvanic corrosion behavior between them, and accelerated synchronously their corrosion. Specifically, at high temperature, the Mg alloy surface film was severely damaged by vigorous hydrogen evolution reaction, and the enhanced alkalinity of deionized water promoted the dissolution of passivation film and matrix. The 24-h weight loss tests and 120-h electrochemical tests showed that with the increase in test duration, high-temperature galvanic corrosion made their corrosion product film thicker and denser, while vigorous hydrogen evolution subsequently damaged the corrosion product film on the Mg alloy surface, accompanied by a higher galvanic corrosion rate between them. The corrosion products for the Mg alloy consisted of MgO, Mg(OH)₂, and Al(OH)₃, while the corrosion products for the Al alloy were primarily Al₂O₃ and Al(OH)₃.

本文采用电化学方法、失重实验和表面表征技术研究了AZ31B镁合金和ADC12铝合金在去离子水中的高温电腐蚀行为。结果表明，高温和电偶效应同时改变了它们之间的电偶腐蚀行为，并同步加速了它们的腐蚀。其中，高温下剧烈的析氢反应严重破坏了镁合金表面膜，去离子水碱度的增强促进了钝化膜和基体的溶解。24 h失重试验和120 h电化学试验表明，随着试验时间的延长，高温电偶腐蚀使其腐蚀产物膜变得更厚、更致密，剧烈的析氢破坏了镁合金表面的腐蚀产物膜，两者之间的电偶腐蚀速率更高。镁合金的腐蚀产物主要是MgO、Mg（OH）₂和Al（OH）₃，而铝合金的腐蚀产物主要是Al₂O₃和Al（OH）₃。

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引用次数: 0

Type II Hot Corrosion of Two Mo-Si-Ti Alloys and Mo-Si-B With a Salt Deposit of Mixed Na2SO4 and NiSO4 Na2SO4和NiSO4混合盐沉积对两种Mo-Si-Ti合金和Mo-Si-B的II型热腐蚀

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-06 DOI: 10.1002/maco.70048

Lukas Korell, Katharina Beck, Arun R. Chitra, Frauke Hinrichs, Ceyhun Oskay, Emma White, Martin Heilmaier, Mathias C. Galetz

To enhance turbine efficiencies by increasing gas inlet temperatures, new materials must be developed which can withstand harsh corrosive environments and provide sufficient mechanical properties at elevated temperatures. The hot corrosion behavior of the promising alloy candidates Mo-20Si-52.8Ti (at.%), Mo-21Si-34Ti (at.%) and Mo-9Si-8B (at.%) under mixed 60mol.% Na₂SO₄ and 40mol.% NiSO₄ deposit in dry synthetic air plus 0.1vol.% SO₂ were investigated at 700°C. Optical and electron microscopy, EPMA and XRD were employed for analysis. Comparing the results to tests with pure Na₂SO₄ reveals that the Mo content significantly impacts the corrosion attack if Ni is present. Na₂MoO₄ is observed during corrosion besides the initial eutectic phase between Na₂SO₄ and NiSO₄. With melting points below 700°C, both compounds are capable of dissolving the surrounding material. However, the formation of NiMoO₄ is energetically favored, transforming the initial liquid eutectic sulfate mixtures. Therefore the corrosion rate is lowered by the addition of NiSO₄ to the Na₂SO₄ deposit.

为了通过提高气体入口温度来提高涡轮效率，必须开发出能够承受恶劣腐蚀环境并在高温下提供足够机械性能的新材料。研究了候选合金Mo-20Si-52.8Ti (at。%), Mo-21Si-34Ti （at.%）和Mo-9Si-8B （at.%）在60mol.% Na2SO4和40mol.% NiSO4混合下，在加0.1vol的干燥合成空气中沉积。在700℃下对% SO2进行了研究。采用光学显微镜、电子显微镜、电子能谱分析和x射线衍射分析。将结果与纯Na2SO4的测试结果进行比较，发现在Ni存在的情况下，Mo含量对腐蚀的影响显著。除了Na2SO4和NiSO4之间的初始共晶相外，在腐蚀过程中还观察到Na2MoO4。当熔点低于700℃时，这两种化合物都能溶解周围的材料。然而，NiMoO4的形成在能量上是有利的，改变了初始的液态共晶硫酸盐混合物。因此，在Na2SO4镀层中加入NiSO4可以降低腐蚀速率。

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引用次数: 0

Cover Picture: Materials and Corrosion. 10/2025 封面图片：材料与腐蚀。10/2025

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-02 DOI: 10.1002/maco.70041

Cover:

3D morphology of Al-alloyed 3Ni steel substrate corroded in solutions Cl_0.1-Cl_3.5 after 20 CCT. The corrosion products films were removed before examination. (a) Cl_0.1; (b) Cl_0.5; (c) Cl₁; (d) Cl₂; (e) Cl_3.5; (f) average depth of pits.

More detailed information can be found in:

Wei Liao, Yiyao Kang, Weipeng Ke, Baojun Dong, Lin Zhao, Xuesong Leng, Hongsheng Chen, Effect of chloride concentrations on the corrosion resistance of a novel Al-alloyed 3Ni weathering steel in simulated tropical marine environment, Materials and Corrosion 2025, 76, 1420.

封面：20cct后在Cl0.1-Cl3.5溶液中腐蚀的铝合金3Ni钢基体的三维形貌。检查前将腐蚀产物的薄膜除去。(一)Cl0.1;(b) Cl0.5;(c) Cl1;Cl2 (d);(e) Cl3.5;(f)平均坑深。廖伟，康一耀，柯伟鹏，董宝军，赵林，冷雪松，陈宏生，氯化物浓度对新型铝合金3Ni耐候钢在模拟热带海洋环境中的耐蚀性的影响，材料与腐蚀，2015,76,1420。

引用次数: 0

Masthead: Materials and Corrosion. 10/2025 报头：材料与腐蚀。10/2025

IF 2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion

Pub Date : 2025-10-02 DOI: 10.1002/maco.70042

引用次数: 0

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