Enhanced corrosion resistance of magnesium-neodymium alloy in simulated concrete pore solution by predesigned corrosion product

Yao, Xinran; Yang, Yujie; Zheng, Minxing; Wang, Jinghong; Liu, Changyang; Sun, Jiapeng; Wu, Guosong

doi:10.1016/j.mtcomm.2022.104027

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…In terms of mechanical properties, Nd incorporation improves the ductility, strength, hardness, and ultimate tensile strength of alloys. 73,74 Moreover, its addition also enhances the anticorrosive properties of alloys, 75 as Song et al 76 In this regard, owing to the lower toxicity and multifunctional aspects, Jin et al 77 fabricated Nd conversion coatings on the substrate of the AZ91 Mg alloy. The application of Nd was done by dipping the substrate at 50 °C in a solution of neodymium nitrate, Nd(NO 3 ) 3 , and hydrogen dioxide solution, H 2 O 2 for 50 min.…”

Section: Acsmentioning

confidence: 99%

“…Neodymium (Nd), the fourth element of the Ln series, is completely nontoxic to the human body having no carcinogenic impact. In terms of mechanical properties, Nd incorporation improves the ductility, strength, hardness, and ultimate tensile strength of alloys. , Moreover, its addition also enhances the anticorrosive properties of alloys, as Song et al found out that the incorporation of Nd-based coatings on AZ91 Mg alloy increased the corrosion resistance by forming a thick coating, having a dry mud-like morphology.…”

Section: Applications and Prospects Of Ln Elementsmentioning

confidence: 99%

See 1 more Smart Citation

Lanthanides: The Key to Durable and Sustainable Corrosion Protection

Zehra

Kaseem

2023

ACS Sustainable Chem. Eng.

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Section: Acsmentioning

confidence: 99%

Section: Applications and Prospects Of Ln Elementsmentioning

confidence: 99%

Lanthanides: The Key to Durable and Sustainable Corrosion Protection

Zehra

Kaseem

2023

ACS Sustainable Chem. Eng.

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“…Deepa B. Prabhu et al [ 29 ] prepared MgCO 3 ∙3H 2 O coatings by immersing a Mg-4Zn alloy in a saturated NaHCO 3 solution at room temperature, which exhibited a biomineralization effect. Yao et al [ 30 ] immersed a magnesium–neodymium alloy in potassium dihydrogen phosphate solution at 50 °C for 4 h and obtained a layer of uniform MgHPO 4 ·3H 2 O coating with a thickness of about 20 µm, which improves the corrosion resistance of the Mg alloy in a Cl − -containing simulated concrete pore solution. Wang et al [ 31 ] immersed an AZ80 alloy in a simulated concrete pore solution made of saturated Ca(OH) 2 solution for 30 days and found that it has good corrosion resistance due to a spontaneously formed protective Mg(OH) 2 film.…”

Section: Introductionmentioning

confidence: 99%

Simultaneously Regulating Electrochemical Corrosion Behavior and Wettability of Magnesium–Neodymium Alloy by Self-Layered Chemical Conversion Coating

Yang,

Kuang,

et al. 2024

Materials

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Rapid corrosion in aqueous solutions of magnesium alloys is one of the major obstacles to their wide application, and coating plays a crucial role in their corrosion protection. Recently, protection- and function-integrated coatings have attracted much attention in the research field of magnesium alloys. In this work, a simple chemical conversion process is proposed to fabricate a composite coating on a magnesium–neodymium alloy through immersion in an aqueous solution made of Ca(OH)2 and NaHCO3. After the immersion process, a coating consisting of two spontaneously formed layers is acquired. The top flower-like layer is composed of Mg5(OH)2(CO3)4∙4H2O, Mg(OH)2 and CaCO3, and the inner dense layer is speculated to be Mg(OH)2. Electrochemical impedance spectroscopy, polarization tests, and hydrogen evolution are combined to evaluate the corrosion resistance in simulated body fluid, simulated seawater solution, and simulated concrete pore solution, which reveals that the coated sample has better corrosion resistance than the uncoated one. After the coated sample is modified with fluorinated silane, a water-repellent surface can be achieved with an average water contact angle of 151.74° and a sliding angle of about 4°. Therefore, our results indicate that effective corrosion protection and potential self-cleaning ability have been integrated on the surface of the magnesium alloy in this study. In addition, the formation mechanism of the self-layered coating is discussed from the viewpoint of the interaction between the substrate and its external solution.

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Effect of Superhydrophobic Surface on Corrosion Resistance of Magnesium-Neodymium Alloy in Artificial Hand Sweat

Liu

Sun

2023

Metals

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A superhydrophobic surface can endow metals with some intriguing characteristics such as self-cleaning behavior. In this study, a simple solution-immersion method based on the concept of predesigned corrosion is developed to enhance the corrosion resistance of a magnesium-neodymium alloy. The Mg alloy is directly soaked in potassium dihydrogen phosphate solution with the addition of ultrasound, and a layer of rough but dense coating is uniformly formed on the Mg-Nd alloy after the immersion process, which is mainly composed of MgHPO4∙3H2O. A superhydrophobic surface with an average wetting angle of 150.5° and a sliding angle of about 4.5° can be obtained on the Mg alloy by further chemical surface modification with perfluorodecyltriethoxysilane. This superhydrophobic surface has an interesting self-cleaning effect as well as good corrosion resistance in artificial hand sweat. In brief, this study provides a feasible way to prepare a superhydrophobic surface on the Mg-Nd alloy and reveals the effect of a superhydrophobic surface on the corrosion behavior of the Mg-Nd alloy, offering new technical insights into the corrosion protection of magnesium alloys.

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Enhanced corrosion resistance of magnesium-neodymium alloy in simulated concrete pore solution by predesigned corrosion product

Cited by 3 publications

References 19 publications

Lanthanides: The Key to Durable and Sustainable Corrosion Protection

Lanthanides: The Key to Durable and Sustainable Corrosion Protection

Simultaneously Regulating Electrochemical Corrosion Behavior and Wettability of Magnesium–Neodymium Alloy by Self-Layered Chemical Conversion Coating

Effect of Superhydrophobic Surface on Corrosion Resistance of Magnesium-Neodymium Alloy in Artificial Hand Sweat

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