Article
Chemistry, Applied
Sepideh Akbaripoor Tafreshi Nejad, Eiman Alibakhshi, Bahram Ramezanzadeh, Fatemeh Marhamati, Marie-Georges Olivier, Mohammad Mahdavian
Summary: This study examines the impact of acetylacetone (AcAc) in alkaline surface treatment on the durability and anti-corrosion properties of electro-galvanized steel coated with a hybrid silane composition. The results show that AcAc plays a crucial role in the corrosion protection of the silane-coated steel. The proposed surface treatment method improves the corrosion resistance of the coated steel.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Engineering, Chemical
Wei He, Xueshuang Xia, Xiang Gao, Ru Yan, Yan Wang, Houyi Ma
Summary: A novel organic-inorganic hybrid chemical conversion film was prepared using a phytic acid-triethoxyvinylsilane composite and zinc ions via solution immersion method. The hybrid films displayed good anti-corrosion performance, with the highest protection efficiency of 99.79% achieved at a film formation time of 45 min. The films also showed excellent adhesion performance at a film formation time of 15 min. The roughness and cracks on the film surface were identified as the main factors affecting the anti-corrosion and adhesion performances. X-ray photoelectron spectroscopy results revealed the adsorption of the phytic acid-triethoxyvinylsilane composite on the steel surface through the formation of Fe-O-P bonds, while the participation of Zn2+ in the film formation process occurred through the formation of zinc phosphate and ZnO.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Materials Science, Multidisciplinary
Xiaocheng Zhou, Man Li, Xiangdong Guan, Jinjie Shi
Summary: Red mud has great potential for producing low-carbon concrete as a supplementary cementitious material. However, its high alkalinity may induce alkali-aggregate reaction, so acids are commonly used for neutralization. Additionally, phytic acid is not suitable for direct application in reinforced concrete as an organic corrosion inhibitor. Therefore, a novel low-carbon and corrosion-resistant concrete was designed using both red mud and phytic acid, and a synergistic inhibition mechanism of the two was proposed based on the formation of a bilayer phytic acid-related protective film on the steel surface.
Article
Construction & Building Technology
Heng Yang, Ning Xu, Xiaoyan Liu, Dong Zhang, Peng Jiang, Yongkun Qin, Chuansheng Xiong, Ang Liu, Rui Ding
Summary: This study combined phytic acid conversion film and molybdate corrosion inhibitor using the dual pretreatment method to enhance the corrosion resistance. The dual pretreatment increased the corrosion resistance by 99.0% and 102.3% compared to single phytic acid and molybdate pretreatment, and delayed the corrosion initiation time. The corrosion protection mechanism was investigated through morphology and composition analysis, showing excellent synergistic effect. The dual pretreatment not only addressed the cracks in the phytic acid conversion film but also reduced the amount of corrosion inhibitor used, effectively avoiding migration and leakage issues.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Chen Hou, Qing Wang, Wenhao Song, Shuangshuang Xu, Zhe Li, Xiaoya Zhuo
Summary: This study investigates the inhibitory effect of tannic acid coatings with different concentrations on chloride corrosion. The surface morphology and chemical composition of the coatings were analyzed. The results indicate that the prepared tannic acid coatings effectively enhance the chloride corrosion resistance of steel. The 10 wt% tannic acid coating on galvanized steel exhibits good corrosion resistance, with an efficiency increase of 77.8%. This environmentally friendly method is expected to have essential applications in chloride corrosion protection of concrete structures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Baojie Dou, Xuejie Li, Junsoo Han, Kevin Ogle
Summary: A new approach using atomic emission spectroelectrochemistry (AESEC) was applied to simultaneously measure the hydrogen evolution reaction (HER) and elemental dissolution rates in the reaction of galvanized steel coatings with HCl solution. The dissolution profiles revealed different kinetic regimes including the dissolution of the intact coating, the dissolution of the nanometric Fe2Al5 intermetallic layer, and the corrosion of the steel substrate. The HER and Zn dissolution rates showed excellent agreement, and the amount of interfacial Fe and Al matched the predicted thickness of the Fe2Al5 intermetallic film, demonstrating the analytical capabilities of the AESEC technique.
Article
Multidisciplinary Sciences
Zihe Chen, Ruikang Feng, Wenyu Wang, Shuibin Tu, Yang Hu, Xiancheng Wang, Renming Zhan, Jiao Wang, Jianzhi Zhao, Shuyuan Liu, Lin Fu, Yongming Sun
Summary: The authors developed a facile strategy based on a reaction-passivation mechanism to effectively separate the aluminum foil and cathode active material in spent lithium-ion batteries. The experimental results showed that >99.9% separation efficiency was achieved for the aluminum foil and LiNi0.55Co0.15Mn0.3O2 layer within 5 minutes. A thin and dense aluminum-phytic acid complex layer was formed on the aluminum foil, suppressing continuous corrosion. This work demonstrates a feasible approach for the separation of aluminum foil and active material layer in cathodes and has practical applications in green and energy-saving battery recycling.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yue Zhao, Botong Su, Xiaobo Fan, Yangguang Yuan, Yiyun Zhu
Summary: This study investigated the corrosion characteristics of galvanized steel wire and Galfan steel wire through accelerated corrosion tests, established a time-varying model, and analyzed the corrosion fatigue degradation under a traffic load. The results showed that Galfan steel wire had a significantly higher average service life compared to galvanized steel wire. Anti-corrosion measures are important for improving the service life of steel wire.
Article
Materials Science, Coatings & Films
Tingting Liang, Huiyong Yuan, Chongchong Li, Shuhan Dong, Chenfeng Zhang, Guanlong Cao, Yongzhe Fan, Xue Zhao, Xiaoming Cao
Summary: By preparing superhydrophobic surfaces containing nano-SiO2 through a simple one-step immersion process on galvanized steel, the corrosion resistance and hydrophobicity of the steel can be significantly improved. The addition of SiO2 promotes the formation of surface rough structure, resulting in excellent superhydrophobic properties and corrosion resistance in the prepared surfaces.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Nourhan EL-sayed, Mohamed Kohail, Mohamed A. Khalaf
Summary: Electro-chemical Chloride Extraction (ECE) is an effective technique for extracting chloride ions from reinforced concrete structures, but it may also have detrimental effects on mechanical properties. This study investigated the effectiveness of ECE using a new type of anode, and examined the behavior of slabs and the influence of initial chloride content on extraction efficiency.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Engineering, Mechanical
Davannendran Chandran, Revathi Raviadaran, Harrison Lik Nang Lau, Arshid Numan, P. V. Elumalai, Olusegun David Samuel
Summary: This study evaluated the corrosion effect of stainless steel and galvanized steel exposed to emulsified diesel, diesel, and biodiesel. The results showed that stainless steel had a lower corrosion rate in emulsified diesel compared to biodiesel, while galvanized steel had a higher corrosion rate in emulsified diesel than biodiesel. The higher acidity of emulsified diesel due to additives was suggested as a possible cause for the increased corrosion. However, the corrosion level of stainless steel in emulsified diesel was found to be within an acceptable range.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Construction & Building Technology
Yongqi Liu, Xiaocheng Zhou, Jinjie Shi
Summary: This study proposes a novel approach using a phytic acid composite pretreatment layer to enhance the corrosion resistance of carbon steel in concrete, resulting in improved resistance to chloride attack by forming a protective film containing corrosion inhibitors.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Samanbar Permeh, Kingsley Lau
Summary: Corrosion mitigation strategies for structural steel bridge elements include the use of galvanized steel. However, severe corrosion was observed in galvanized steel components in contact with sulfate-rich deficient cementitious grout within a short period. The presence of sulfates hindered passivation, resulting in increased corrosion activity.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Thet Htet Naing, Somjai Janudom, Narissara Mahathaninwong, Warakorn Limbut, Seppo Karrila
Summary: A simple electrodeposition method was proposed for fabricating corrosion-resistant superhydrophobic films on hot-dip galvanized steel without using low surface-energy materials. The effects of electrodeposition time on the surface characteristics and corrosion resistance of the zinc films were investigated. It was found that the electrodeposition time influenced the morphology and roughness of the deposited films, and a 20-minute electrodeposition time resulted in a superhydrophobic surface with optimal corrosion inhibition property.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Construction & Building Technology
Issara Sereewatthanawut, Withit Pansuk, Phoonsak Pheinsusom, Lapyote Prasittisopin
Summary: The study focuses on the corrosion behavior of a rapid-set stucco composite in steel-reinforced cementitious system, finding that water-to-cement ratio plays a crucial role in the corrosion process.
JOURNAL OF BUILDING ENGINEERING
(2021)
