Article
Chemistry, Physical
Nordin Ben Seddik, Anas Chraka, Youssef Zarki, Hamza Oulad Idriss, Salaheddine Rami, Fatima Janoub, Ihssane Raissouni, Khalid Draoui, Ahmed Ait Aghzzaf, Dounia Bouchta
Summary: Corrosion is a significant issue in industries such as automotive, building, and marine sectors. In this study, a swelling clay was utilized as a corrosion inhibiting reservoir by incorporating an amino acid (L-cysteine). The modified clay composite exhibited excellent corrosion protection properties, making it a potential candidate for coating applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Pratyush Mishra, Denizhan Yavas, Abdullah Alshehri, Pranav Shrotriya, Ashraf Bastawros, R. Kurt Hebert
Summary: The paper presents a model for intergranular corrosion of nonsensitized low-carbon pipeline steels, where enhanced grain boundary oxidation is explained by vacancies produced by reactive Si atoms. Experimental evidence supports the role of vacancy diffusion in the evolution of IGC, with calculations showing agreement with experimental measurements. The rationalization of sharpening of GB grooves over time during corrosion exposures and the quantitative explanation of IGC enhancement by vacancy diffusion without solute segregation or precipitation at GBs are key findings.
Article
Environmental Sciences
Zhelin Song, Yu Xu, Honghai Wu, Jiahui Huang, Yanlin Zhang
Summary: Acetamiprid, a recalcitrant pollutant in wastewater treatment plant effluents, poses a potential threat to human health, aquatic life, soil microorganisms, and beneficial insects. In this study, α-Fe2O3-pillared bentonite (FPB) was synthesized and used in the photo-Fenton process, with the assistance of L-cysteine (L-cys) present in natural aquatic environments, for the degradation of acetamiprid. The degradation rate constant (k) of acetamiprid by FPB/L-cys in the photo-Fenton process was significantly higher than that in the Fenton process of FPB/L-cys without light and the photo-Fenton process of FPB without L-cys. The synergistic effect of L-cys and visible light was found to accelerate the cycle of Fe(III) to Fe(II) in FPB/L-cys, enhancing the visible light response of FPB and promoting interfacial and photo-generated electron transfer for acetamiprid degradation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Yingjian Huang, Qiuqing Zhu, Zhenju Zhou, Yu Zhou, Hui Cang, Yongming Tang
Summary: The corrosion behaviors of low-alloy steel were studied in simulated tidal zones using various testing methods. The results showed that the corrosion in tidal zones was more severe than in the immersion zone, with the low tide and middle tide zones experiencing more severe corrosion than the high tide zone.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zhi Chen, Chao Li, Hang Su, Yao Huang, Xianguo Yan
Summary: This paper investigates the effect of deep cryogenic treatment on the corrosion resistance of 42CrMo low alloy steel. The results show that the deep-cooled specimens at -120°C, -160°C, and -190°C exhibit reduced self-corrosion current density compared to conventional heat-treated specimens. The presence of fine carbide precipitation on the samples treated at -120°C improves their corrosion resistance.
Article
Materials Science, Multidisciplinary
Shaohua Zhang, Tiantian Bian, Liming Mou, Xiaoyan Yan, Jinling Zhang, Yuezhong Zhang, Baosheng Liu
Summary: In this work, low-Cr steels with enhanced corrosion resistance by employing Ni and Mo alloying were self-designed to provide an alternative option compared to a common 3Cr steel in CO2 environments. The corrosion resistance mechanism was investigated by comprehensively evaluating corrosion behavior of three low-Cr steels exposed to CO2-saturated NaCl solutions over time periods of 6-168 h at 90 and 180 degrees C, involving electrochemical and immersion tests. The results indicate that the addition of Ni and Mo decreases general corrosion rates only in the early stages of corrosion, and FeCO3 crystals instead of inner Cr-enrichment films play a decisive role in retarding long-term general corrosion rates. On the other hand, localized corrosion behavior of low-Cr steels is obviously retarded by employing Ni and Mo alloying, in which non-reactive nickel occupies a large amount of vacancies and restricts the diffusion of corrosive species. In addition, Mo accelerates the enrichment of Cr during early stages of immersion and facilitates rapid re-passivation once films are broken, reducing the risks of perforation failure of pipelines.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Coatings & Films
Y. B. Bozkurt, H. Kovaci, A. F. Yetim, A. celik
Summary: Many engineering structures, such as biomedical, automotive, and aerospace, experience wear and corrosion damage during service, which shortens their lifespan. Tribocorrosion, the combined effect of wear and corrosion, has a greater impact on the lifetime of these structures than the individual effects. Surface properties play a crucial role in tribocorrosion damage, and various surface modifications, including shot peening, have been used to improve the performance of materials. However, the tribocorrosion behavior of shot peened materials has not been fully understood. Therefore, this study investigated the effect of shot peening on the tribocorrosion properties of AISI 4140 low-alloy steel. The results showed that increasing shot peening intensity changed the surface characteristics from hydrophobic to hydrophilic and improved the tribocorrosion performance in terms of increased surface hardness.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yuri Makarychev, Natalia Gladkikh, Ivan Arkhipushkin, Yuri Kuznetsov
Summary: This study introduces a method for obtaining stable hydrophobic inhibitor dispersions and examines their application as corrosion inhibitors for low-carbon steel. By utilizing electrochemical methods and X-ray photoelectron spectroscopy, the formation characteristics of polymeric layers in hydrophobic organosilicon dispersions were studied.
Article
Engineering, Mechanical
Sachin A. Mali, Dongkai Zhu, Yangping Liu, Jeremy L. Gilbert
Summary: This study found that normal load and electrode potential have significant effects on fretting crevice corrosion and fretting initiated crevice corrosion of SS316L and its mix-alloy couples.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Gustavo Tomas Galo, Andreia de A. Morandim-Giannetti, Fernando Cotting, Idalina Vieira Aoki, Isabella Pacifico Aquino
Summary: The study evaluated the capacity of onion peel and bulb extracts as natural corrosion inhibitors for carbon steel, showing high inhibition efficiency. Electrochemical tests and SEM images also confirmed the improved corrosion resistance of carbon steel in the presence of these extracts.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Construction & Building Technology
Liu Yang, Xiaojia Yang, Feifan Xu, Qing Li, Renzheng Zhu, Xuequn Cheng, Guowei Yang, Xiaogang Li
Summary: This study investigates the formation and properties of rust layers on low alloy steel with 0.40 wt% tin (Sn) in rural atmospheric environments. Various techniques such as scanning electron microscopy, X-ray diffraction, and Raman spectroscopy were used to analyze the rust layer. Additionally, a new corrosion big data sensor was utilized to evaluate the corrosion resistance of Sn-containing low alloy steels.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Mechanical
J. Li, H. Qiu, X. F. Zhang, H. L. Yu, J. J. Yang, X. H. Tu, W. Li
Summary: A comparative study on the abrasive wear, corrosion, and abrasive-wear corrosion behaviors of low alloy martensitic steel with different (Ti, Mo) C particle contents was conducted. The results showed that increasing carbide content improved the abrasive wear resistance but weakened the abrasive-corrosive resistance due to galvanic corrosion.
Article
Materials Science, Multidisciplinary
Xinwei Xu, Yingjian Huang, Qiuqing Zhu, Anran Zuo, Hui Cang, Yongming Tang
Summary: Simulated splash corrosion of Q345D low-alloy steel and conducted in-situ electrochemical measurements. In the early stage of splash corrosion, the corrosion rate in the low splash zone is significantly higher than that in the high splash zone, but the difference in corrosion rate becomes slight in the later stage under different splash amounts. Compared to high splash amount, corrosion under low splash amount is more localized. The density of rust layers in the splash zone increases with time, and the rust layers are mainly composed of Fe3O4/γ-Fe2O3 phase with a small amount of α-FeOOH and γ-FeOOH.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zhenguang Liu, Yiming Wang, Yangdong Zhai, Yanxin Qiao, Chuanbo Zheng, Dongpeng Wang, Xingling Shi, Huihu Lu, Chuan Liu
Summary: The corrosion behavior of low alloy steel in H2S-saturated solution was studied through immersion experiment, focusing on corrosion rate, corrosion product morphology, and alloying element distribution. The results showed that the corrosion rate decreased over time, and the corrosion products had a denser and thicker structure. Alloying elements, such as Cr and Mo, tended to accumulate in the corrosion products.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Bright O. Okonkwo, Hongliang Ming, Fanjiang Meng, Jianqiu Wang, Xuelian Xu, En-Hou Han
Summary: The study found that the oxide film and exposure time have significant effects on the galvanic corrosion between low alloy steel and stainless steel dissimilar metals, with the formation of oxide film suppressing the increase in corrosion rate as exposure time prolongs. A quantitative relationship between galvanic current and anode metal dissolution rate was established in the study.
JOURNAL OF NUCLEAR MATERIALS
(2021)
