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Showing papers on "Corrosion published in 2021"


Journal ArticleDOI
TL;DR: In this article, a green antihypertensive drug Losartan potassium (LP) with superior corrosion protection ability was developed for the first time, and the results indicated that LP exhibited superior mixed-type corrosion protection to steel at different temperatures owing to the formation of compact and ordered LP-adsorption film on steel surface.

242 citations


Posted ContentDOI
TL;DR: In this paper, an ultrathin, fluorinated two-dimensional porous covalent organic framework (FCOF) film was developed as a protective layer on the Zn surface.
Abstract: Rechargeable aqueous zinc-ion batteries (RZIBs) provide a promising complementarity to the existing lithium-ion batteries due to their low cost, non-toxicity and intrinsic safety. However, Zn anodes suffer from zinc dendrite growth and electrolyte corrosion, resulting in poor reversibility. Here, we develop an ultrathin, fluorinated two-dimensional porous covalent organic framework (FCOF) film as a protective layer on the Zn surface. The strong interaction between fluorine (F) in FCOF and Zn reduces the surface energy of the Zn (002) crystal plane, enabling the preferred growth of (002) planes during the electrodeposition process. As a result, Zn deposits show horizontally arranged platelet morphology with (002) orientations preferred. Furthermore, F-containing nanochannels facilitate ion transport and prevent electrolyte penetration for improving corrosion resistance. The FCOF@Zn symmetric cells achieve stability for over 750 h at an ultrahigh current density of 40 mA cm−2. The high-areal-capacity full cells demonstrate hundreds of cycles under high Zn utilization conditions. Rechargeable aqueous zinc-ion batteries are promising but the zinc anode suffers from dendrite growth and electrolyte corrosion. Here, the authors develop a fluorinated covalent organic framework film as a protective layer for aqueous zinc anode battery.

225 citations


Journal ArticleDOI
TL;DR: The experimental results showed that PLE was a mixed-type inhibitor and exhibited excellent anti-corrosion nature over a certain temperature range and Morphological analysis test results at different temperatures strongly proved the anti-corruption nature of PLE.

224 citations


Journal ArticleDOI
TL;DR: In this paper, the common influence mechanisms of rare earth (RE) on mechanical and anti-corrosion properties of Mg alloys are summarized, and the latest research progress of RE-containing Mg-alloys with simultaneously improved strength and corrosion resistance are introduced.

185 citations



Journal ArticleDOI
TL;DR: In this article, a 3D NiAl-layered double hydroxide/graphene (NiAl-LDH/G) composite synthesized by atomic-layer-deposition-assisted in situ growth is presented as an anticorrosive microwave absorber.
Abstract: High-performance microwave absorbers with special features are desired to meet the requirements of more complex modern service environments, especially corrosive environments. Therefore, high-efficiency microwave absorbers with corrosion resistance should be developed urgently. Herein, a 3D NiAl-layered double hydroxide/graphene (NiAl-LDH/G) composite synthesized by atomic-layer-deposition-assisted in situ growth is presented as an anticorrosive microwave absorber. The content of NiAl-LDH in the composite is optimized to achieve impedance matching. Furthermore, under the cooperative effects of the interface polarization loss, conduction loss, and 3D porous sandwich-like structure, the optimal NiAl-LDH/G shows excellent microwave absorption performance with a minimum reflection loss of -41.5 dB and a maximum effective absorption bandwidth of 4.4 GHz at a loading of only 7 wt% in epoxy. Remarkably, the encapsulation effect of NiAl-LDH can restrain the galvanic corrosion owing to graphene. The epoxy coating with the NiAl-LDH/G microwave absorber on carbon steel exhibits long-term corrosion resistance, owing to the synergetic effect of the superior impermeability of graphene and the chloridion-capture capacity of the NiAl-LDH. The NiAl-LDH/G composite is a promising anticorrosive microwave absorber, and the findings of this study may motivate the development of functional microwave absorbers that meet the demands of anticorrosive performance of coatings.

180 citations


Journal ArticleDOI
TL;DR: In this article, the authors reviewed the corrosion behavior and mechanism of high-entropy alloys in various aqueous solutions, revealing the correlation among the composition, microstructure and corrosion resistance of HEAs.

176 citations


Journal ArticleDOI
TL;DR: In this article, a simple strategy involving application of a HfO2 coating was used to guide uniform deposition of Zn2+ to suppress formation of zinc dendrites.

139 citations


Journal ArticleDOI
TL;DR: In this paper, the influence of various alloying elements on the mechanical properties of magnesium is reviewed and the broad classification of Mg alloys and their behavioral trends are detailed, and the manufacturing techniques of magnesium alloys along with the secondary techniques are also covered.

128 citations


Journal ArticleDOI
TL;DR: In this article, an extract of Lilium brownii leaves is developed to boost the corrosion inhibition performance via a facile pure water extraction method, which reveals that the developed extract significantly restrains the corrosion of X70 steel.

105 citations


Journal ArticleDOI
01 May 2021-Carbon
TL;DR: In this article, a well-dispersed cerium oxide grafting fluorinated reduced graphene oxide (FrGO@CeO2) nanofiller was developed to enhance the anti-corrosion properties of epoxy coating on Q235 mild steel surfaces.

Journal ArticleDOI
TL;DR: In this article, the authors provide an up-to-date review on corrosion mechanisms and recent advances in electrical methods for corrosion monitoring, and propose a half-cell potential technique with potential mapping for locating areas with a high corrosion risk.

Journal ArticleDOI
01 Mar 2021-Carbon
TL;DR: In this paper, the in-situ growth of double shells of silica and carbon on FeSiAl (FSA) alloy surface was presented to obtain an integrated FSA@SiO2@C hybrid structure via combined Stober and catalytic chemical vapor deposition (CCVD) techniques.

Journal ArticleDOI
Meng Cai1, Han Yan1, Y.T. Li1, Wen Li1, Hao Li1, Xiaoqiang Fan1, Minhao Zhu1 
TL;DR: In this article, three-dimensional (3D) Ti3C2Tx/polyaniline composites (TPCs) were synthesized by oxidative polymerization of aniline monomers in Ti3c2Tx dispersion.

Journal ArticleDOI
TL;DR: In this paper, a novel nanocomposite coating with dual-action self-healing corrosion protection activated by the photothermal response of plasmonic titanium nitride nanoparticles (TiN NPs) was introduced.

Journal ArticleDOI
TL;DR: In this paper, an ultrathin hydroxyapatite (HAp) nanosheets were noncovalently functionalized by situ self-polymerization of dopamine chemistry with an aim to improve their compatibility and dispersibility in epoxy matrix.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the stress corrosion cracking behavior of 2024-T351 and 7075-T651 in solution and thin electrolyte layer (TEL) by electrochemical and mechanical testing, surface observation, and hydrogen detection.

Journal ArticleDOI
TL;DR: Interestingly, the epoxy coatings containing ZIF-67/GO and ZIF/GO@APS particles revealed long-term corrosion protection durability and outstanding self-healing anti-corrosion performance, which were well studied via EIS, salt spray, cathodic delamination, and pull-off techniques.

Journal ArticleDOI
TL;DR: In this paper, the results of electrochemical impedance spectroscopy (EIS), electrochemical noise (EN), and pull-off tests indicated that the presence of the 8-Hydroxyquinoline (8-HQ) organic inhibitor provides the optimal performance for coating systems.

Journal ArticleDOI
TL;DR: In this article, the mechanism for microbial corrosion of stainless steel, the metal of choice for many actual applications, can be significantly different from that for Fe(0), although H2 is often an intermediary electron carrier between the metal and microbes during Fe( 0) corrosion, making this corrosion mechanism unlikely.
Abstract: Microbial corrosion of iron-based materials is a substantial economic problem. A mechanistic understanding is required to develop mitigation strategies, but previous mechanistic studies have been limited to investigations with relatively pure Fe(0), which is not a common structural material. We report here that the mechanism for microbial corrosion of stainless steel, the metal of choice for many actual applications, can be significantly different from that for Fe(0). Although H2 is often an intermediary electron carrier between the metal and microbes during Fe(0) corrosion, we found that H2 is not abiotically produced from stainless steel, making this corrosion mechanism unlikely. Geobacter sulfurreducens and Geobacter metallireducens, electrotrophs that are known to directly accept electrons from other microbes or electrodes, extracted electrons from stainless steel via direct iron-to-microbe electron transfer. Genetic modification to prevent H2 consumption did not negatively impact on stainless steel corrosion. Corrosion was inhibited when genes for outer-surface cytochromes that are key electrical contacts were deleted. These results indicate that a common model of microbial Fe(0) corrosion by hydrogenase-positive microbes, in which H2 serves as an intermediary electron carrier between the metal surface and the microbe, may not apply to the microbial corrosion of stainless steel. However, direct iron-to-microbe electron transfer is a feasible route for stainless steel corrosion.

Journal ArticleDOI
TL;DR: In this paper, equi-atomic AlCoCrFeNi HEA coatings were synthesized via atmospheric plasma spray (APS) using mechanically alloyed feedstock, and a correlation between microstructure and mechanical properties in terms of both hardness and wear were established at multiscale levels.

Journal ArticleDOI
TL;DR: A review of green and sustainable corrosion inhibitors for non-ferrous metals and alloys in different corrosive environments is presented in this article, which summarizes advances, opportunities, and recent progress in green and sustainability corrosion inhibitors, and the significant findings and performance of these inhibitors for aluminium/ NaOH and copper/ HNO3 have been emphasized.

Journal ArticleDOI
TL;DR: In this article, the corrosion inhibition property of Juglone extracted from walnut (Juglans regia L.) green husk for mild steel samples exposed to an acid electrolyte (1.M HCl) was explored via computer modelings, the attraction forces of the inhibitors/metal surface were explored.

Journal ArticleDOI
TL;DR: In this paper, a brief outline of recent achievements on ionic liquids as steel corrosion inhibitors is given, and the influence of the ionic liquid composition (i.e. alkyl tail length, the presence of polar and non-polar substituents in cation and anion) as well as its concentration, and also temperature and nature of the medium on the steel anti-corrosion performance is discussed.

Journal ArticleDOI
Pengfei Wu1, Kefu Gan1, Dingshun Yan1, Fu Zhenghong1, Zhiming Li1 
TL;DR: In this article, the mechanical behavior and corrosion resistance of a newly developed non-equiatomic Fe40Ni20Co20Cr20 (at.%) high-entropy alloy (HEA) were investigated.

Journal ArticleDOI
TL;DR: Schiff bases (SBs) possess the basic feature of compounds that are primarily qualified to test as corrosion inhibitors for different metal/electrolyte systems as discussed by the authors, and they can form corrosion mitigating surface film through their electron rich centers.

Journal ArticleDOI
TL;DR: In this article, a deformation-driven metallurgy was implemented to prepare graphene nanoplatelet (GNP)-reinforced aluminum matrix composites with a time-dependent self-enhancement in corrosion resistance.
Abstract: Deformation-driven metallurgy was implemented to prepare graphene nanoplatelet (GNP)-reinforced aluminum matrix composites with a time-dependent self-enhancement in corrosion resistance. Severe plastic deformation contributed to the sufficient brokenness, thinning, enfolding, and redispersion of GNPs, as well as grain refinement. The homogeneously dispersed GNPs showed a great corrosion inhibition mechanism in a chloride-containing environment, ascribed to the formation of a carbon-doped protective film via diffusion and chemical bonding between GNPs and the surface oxide film. Electrochemical and intergranular corrosion tests were conducted to show the enhancement of long-term corrosion resistance. First-principles calculations were performed to explore the high corrosion resistance of the carbon-doped protective film. The energy barriers of vacancy formation, Cl ingress, and charge transfer were synchronously enhanced with the addition of GNPs into aluminum matrix composites as long-term corrosion inhibitors.

Journal ArticleDOI
TL;DR: In this article, an ultrafine-grain structure consisting of dense ultrafine twins is prepared, yielding a high strength up to 469 MPa and decreasing the corrosion rate by one order of magnitude.
Abstract: Conventional ultrafine-grains can generate high strength in Mg alloys, but significant tradeoff of corrosion resistance due to inclusion of a large number of non-equilibrium grain boundaries. Herein, an ultrafine-grain structure consisting of dense ultrafine twins is prepared, yielding a high strength up to 469 MPa and decreasing the corrosion rate by one order of magnitude. Generally, the formation of dense ultrafine twins in Mg alloys is rather difficult, but a carefully designed multi-directional compression treatment effectively stimulates twinning nucleation within twins and refines grain size down to 300 nm after 12-passes compressions. Grain-refinement by low-energy twins not only circumvents the detrimental effects of non-equilibrium grain boundaries on corrosion resistance, but also alters both the morphology and distribution of precipitates. Consequently, micro-galvanic corrosion tendency decreases, and severe localized corrosion is suppressed completely. This technique has a high commercial viability as it can be readily implemented in industrial production. Conventional ultrafine grains can generate high-strength Mg alloys, but non-equilibrium grain boundaries deteriorates their corrosion resistance. Here, the authors present ultrafine grained Mg alloys with dense twins that display high strength and reduced corrosion rate by one order of magnitude.

Journal ArticleDOI
TL;DR: In this article, the ZIF-67 NPs were synthesized and used as a corrosion inhibitor container to enhance the barrier/active corrosion protection features of the epoxy coating.

Journal ArticleDOI
TL;DR: In this paper, the authors highlight the corrosion resistance of the passive layers on biomedical Ti-6Al-4V and β-type Ti alloys in the human body environment by reviewing relevant literature research contributions.
Abstract: The high specific strength, good corrosion resistance, and great biocompatibility make titanium and its alloys the ideal materials for biomedical metallic implants. Ti-6Al-4V alloy is the most employed in practical biomedical applications because of the excellent combination of strength, fracture toughness, and corrosion resistance. However, recent studies have demonstrated some limits in biocompatibility due to the presence of toxic Al and V. Consequently, scientific literature has reported novel biomedical β-Ti alloys containing biocompatible β-stabilizers (such as Mo, Ta, and Zr) studying the possibility to obtain similar performances to the Ti-6Al-4V alloys. The aim of this review is to highlight the corrosion resistance of the passive layers on biomedical Ti-6Al-4V and β-type Ti alloys in the human body environment by reviewing relevant literature research contributions. The discussion is focused on all those factors that influence the performance of the passive layer at the surface of the alloy subjected to electrochemical corrosion, among which the alloy composition, the method selected to grow the oxide coating, and the physicochemical conditions of the body fluid are the most significant.