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Bio-inhibitive effect of an algal symbiotic bacterium on corrosion of magnesium in marine environment

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Journal of Magnesium and Alloys 2023年第12期11卷 4603-4618页

作者： Yuqiao Dong Guang-Ling Song Yuqing Xu dajiang zheng College of Materials Xiamen UniversityXiamen 361005China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhenChina State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen University422 S.Siming RdXiamen361005China The University of Queensland School of Mechanical and Mining EngineeringDivision of Materials EngineeringSt LuciaQld 4072 Australia Institute of Corrosion Science and Technology Guangzhou510530GuangdongChina

It is a longstanding and challenging task to develop sustainable environment-friendly and cost-effective corrosion-protection technologies for Mg alloys, especially under marine conditions in which corrosion can normally be significantly accelerated by bacterial activity. However,this paper reports on the corrosion of highly active Mg interestingly inhibited by an algal-symbiotic bacterium Bacillus altitudinis. The corrosion of Mg in the presence of the bacterium drastically reduced by one order of magnitude after 14 days of immersion. This means that the algal-symbiotic bacterium widely available in natural ocean environments may be employed as a green and sustainable inhibitor in the marine industry. Based on electrochemical measurements, surface analyses and microbe experiments, a combined inhibition mechanism is proposed in the paper to interpret the interesting corrosion behavior of Mg.

关键词： Magnesium Corrosion inhibition Marine environment Biofilm Bacterium

Layered double hydroxide(LDH) for multi-functionalized corrosion protection of metals: A review

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Journal of Materials Science & Technology 2022年第7期102卷 232-263页

作者： Yanhui Cao dajiang zheng Fan Zhang Jinshan Pan Changjian Lin State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research InstituteXiamen 361101China College of Materials Xiamen UniversityXiamen 361005China Division of Surface and Corrosion Science Department of ChemistryKTH Royal Institute of TechnologyStockholm SE-10044Sweden

Layered double hydroxide(LDH) has been widely developed in the field of corrosion and protection in recent years based on its unique characteristics including anion capacity, anion exchange ability, structure memory effect, and barrier resistance. This paper comprehensively reviews recent work on the preparations, properties of LDH in the forms of powder and film and their applications in different environments in corrosion and protection. Some novel perspectives are also proposed at the end of the review for future research in corrosion and protection field.

关键词： Layered double hydroxide Powder Films Corrosion protection

The anodically polarized Mg surface products and accelerated hydrogen evolution

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Journal of Magnesium and Alloys 2023年第1期11卷 230-248页

作者： Jufeng Huang Guang-Ling Song Yixing Zhu dajiang zheng Ziming Wang Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityPeople’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005People’s Republic of China School of Engineering The University of QueenslandSt.LuciaQld 4072Australia

To clarify the anodic dissolution mechanism of Mg,the hydrogen evolution from pure Mg in acidic solutions under galvanostatic conditions were systematically *** increasing anodic current density,the cathodic hydrogen evolution rate decreased,and the anodic hydrogen evolution became faster while some surface area on the Mg was becoming dark under anodic *** on the surface analysis results and the generally accepted basic electrochemical equations,the evolution kinetics of hydrogen from Mg was deduced,and the most possible surface intermediate active species that could facilitate the anodic Mg dissolution and anodic hydrogen evolution were *** paper further develops the model of incomplete film Mg^(+) dissolution,explains many reported experimental phenomena,and clarifies misunderstandings of current mechanism.

关键词： Magnesium Corrosion Hydrogen evolution Negative difference effect

Galvanic activity of carbon fiber reinforced polymers and electrochemical behavior of carbon fiber

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腐蚀学报（英文） 2021年第1期1卷 26-39页

作者： Guang-Ling Song Chi Zhang Xiaodong Chen dajiang zheng Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityXiamen 361005China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005China School of Mechanical and Mining Engineering The University of QueenslandSt LuciaQld 4072Australia Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityXiamen 361005China

Carbon fiber reinforced polymer(CFRP)as an advanced modem engineering material has found many applica-tions in industry because of its high strength and ***,there has been a big concern that it may cause galvanic corrosion damage to the metal in *** review comprehensively summarizes the existing studies on the galvanic effect of CFRPs on engineering *** recent achievements are particularly focused,such as the involvement of crevice corrosion and self-corrosion in the damage of a metal/CFRP couple,the effect of micro-defects in the surface polymer layer of a CFRP on the galvanic activity,the polarization damage in a CFRP,and the electrochemical anisotropy of the reinforcing carbon fiber(CF).

关键词： CFRP Carbon fiber Galvanic corrosion Electrochemistry Anisotropy

A Green Conversion Coating on a Magnesium Alloy for Corrosion Protection

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Acta Metallurgica Sinica(English Letters) 2023年第10期36卷 1630-1648页

作者： Tong Bu Ruijie Jia Tao Ying Andrej Atrens Pengbo Chen dajiang zheng Fuyong Cao Center for Marine Materials Corrosion and Protection College of MaterialsFujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsXiamen UniversityXiamen361005China National Engineering Research Center of Light Alloy Net Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Mechanical and Mining Engineering Centre for Advanced Materials Processing and Manufacturing(AMPAM)The University of QueenslandSt.LuciaBrisbaneQLD4072Australia First Affiliated Hospital of Xi’an Jiao Tong University Xi’an710061China

A novel coating on the Mg1Mn alloy was produced by anodic polarization combined with hydrothermal treatment(AP+H)in 0.1 M Na2CO3 *** microstructure and protection of the coating were *** coating consisted of MgCO3,Mg(OH)2 and MgO,and provided satisfactory protection in 3.5 wt%NaCl with a corrosion rate of 0.07 mm y−1 in 72 ***,after that period,the corrosion rate of the specimen increased due to the damage of the *** failure of the coating was strongly related to the second phase particles(*** particles)or impurities in the *** AP+H coating is supposed to be used as a primer coating for Mg applications in kitchen ware,biomedical areas or industry.

关键词： Coating Magnesium alloy Hydrothermal Corrosion resistance

Biocorrosion induced by red-tide alga-bacterium symbiosis and the biofouling induced by dissolved iron for carbon steel in marine environment

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Journal of Materials Science & Technology 2022年第33期128卷 107-117页

作者： Yuqiao Dong Guang-Ling Song Jiawei Zhang Yahui Gao Zi Ming Wang dajiang zheng Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityXiamen 361005China School of Life Sciences and Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems Xiamen UniversityXiamen 361102China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China The University of Queensland School of Mechanical and Mining EngineeringDivision of Materials EngineeringSt LuciaQld 4072Australia

The assemblages of unicellular microalgae and bacteria in phytoplankton communities can generally result in biodeterioration of metals in marine *** this study,the self-promoted biofouling mechanism underneath red-tide alga Phaeodactylum tricornutum and its symbiotic bacterium Bacillus altitudinis was systematically *** mutualistic interaction of the bacteria and algae quadrupled the corrosion rate in comparison to the individual effect of the bacterium or algal strain ***,the corroded metal appeared to be an accelerator that can stimulate the activity of the *** and aggravate the biological pollution based on the result of 62.3%up-regulation of the key photosynthesis *** corrosion-biofouling-accelerated corrosion-deteriorated biofouling formed a vicious cycle.

关键词： Algal-bacterial symbiosis Marine biofouling Carbon steel Corrosion products

Degradation Behavior of Zn-Cu Stents with Different Coatings in Sodium Chloride Solution

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Acta Metallurgica Sinica(English Letters) 2024年第9期37卷 1564-1580页

作者： Xingpeng Liao Jialuo Huang Zhilin Liu Jingru Guo dajiang zheng Pengbo Chen Fuyong Cao Center for Marine Materials Corrosion and Protection Fujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsCollege of MaterialsXiamen UniversityXiamen361005China Light Alloys Research Institute College of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China First Affiliated Hospital of Xi’an Jiao Tong University Xi’an710061China

The Zn0.6Cu wires are fabricated into stents for the potential biodegradable application of nasal wound *** degradation behavior of Zn0.6Cu stents in 0.9 wt%NaCl at 36.5℃ is *** shows that the untreated Zn0.6Cu stent experiences severe crevice corrosion with acceleration and autocatalytic effects within the micro-cracks and ruptures at 4.67±1.15 d,with the average corrosion rate of 0.28 mm y^(-1).Fortunately,the anodic polarization(AP)+hydrothermal(H)conversion coating,consisting of ZnCO_(3),Zn(OH)_(2) and ZnO,could inhibit the crevice corrosion significantly by reducing the cathode/anode ratio,extending the rupture time up to 16.50±2.95 d,with the average corrosion rate of 0.14 mm y^(-1).This research indicates that the biodegradable Zn-based stent has some potential applications in nasal wound recovery area.

关键词： Zn alloys wires Corrosion behavior Biodegradable stents Coating Degradation characterization

Conversion of magnetron-sputtered sacrificial intermediate layer into a stable FeCo-LDH catalyst for oxygen evolution reaction

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Nano Research 2024年第5期17卷 4307-4313页

作者： Zhiquan Lang Guang-Ling Song Xingpeng Liao Wenzhong Huang Yixing Zhu Haipeng Wang dajiang zheng Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityXiamen 361005China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005China The University of Queensland St.LuciaOLD 4072Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China

Controllable and scalable preparation of electrocatalyst materials holds significant importance for their practical *** sputtering is a highly effective synthesis method,known for its producing uniform films and allowing easy control of component *** this paper,we propose an in-situ synthesis method for layered double hydroxide(LDH)electrocatalysts through sacrificing magnetron sputtered *** resulting FeCo-LDH catalyst demonstrated a low overpotential of only 300 mV at 10 mA·cm^(-2).Furthermore,we conducted spectroscopic analysis to investigate the surface changes of the catalysts during the oxygen evolution reaction(OER)*** findings indicated that the formation of Co oxyhydroxides plays a beneficial role in enhancing the catalytical performance of the FeCo-LDH for OER *** restructuring strategy of converting a magnetron-sputtered sacrificial film into a catalytical LDH introduces a new avenue to the synthesis of transition metal-based electrocatalysts.

关键词： magnetron co-sputtering surface reconstruction electrocatalyst oxygen evolution reaction

A Mg alloy with no hydrogen evolution during dissolution

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Journal of Magnesium and Alloys 2023年第6期11卷 2084-2095页

作者： Fuyong Cao Bo Xiao Ziming Wang Tao Ying dajiang zheng Andrej Atrens Guang-Ling Song Center for Marine Materials Corrosion and Protection College of MaterialsXiamen University422 S.Siming Rd.Xiamen 361005China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen University422 S.Siming RdXiamen 361005China National Engineering Research Center of Light Alloy Net Forming School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Mechanical and Mining Engineering The University of QueenslandSt LuciaBrisbaneQLD 4072Australia

Hydrogen evolution is normally associated with the corrosion or dissolution of Mg alloys in aqueous *** work studied the corrosion behavior of sputtered pure Mg,Mg82Zn18(at.%),Mg64Zn36(at.%),and pure Zn in 3.5%Na Cl ***64Zn36had(ⅰ)an amorphous microstructure with some nano-scale grains,(ⅱ)a corrosion rate substantially lower than that of pure Mg,and(ⅲ)no hydrogen evolution during corrosion or anodic dissolution,because the positive corrosion potential retarded the cathodic hydrogen *** is a new route to prevent hydrogen evolution during Mg corrosion,which has never previously been realized.

关键词： Magnesium hydrogen evolution metal glass anodic dissolution