A5048852353- Magnesium Alloys: Properties and Applications
- Corrosion Behavior and Inhibition
- Hydrogen Storage and Materials
- Layered Double Hydroxides Synthesis and Applications
- Advanced battery technologies research
- Magnesium Oxide Properties and Applications
- Hydrogen embrittlement and corrosion behaviors in metals
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Metal and Thin Film Mechanics
- Machine Learning in Materials Science
- Supercapacitor Materials and Fabrication
- MXene and MAX Phase Materials
- Aluminum Alloys Composites Properties
- Concrete Corrosion and Durability
- Intermetallics and Advanced Alloy Properties
- Gas Sensing Nanomaterials and Sensors
- History and advancements in chemistry
- High Entropy Alloys Studies
- Phosphorus and nutrient management
- Mine drainage and remediation techniques
- Advancements in Solid Oxide Fuel Cells
- Membrane-based Ion Separation Techniques
Helmholtz-Zentrum Hereon
2017-2024
In the present work, a flash-PEO coating is developed on AZ31B alloy in combination of silicate, phosphate, and fluoride based electrolyte order to offer green alternative chromate conversion coatings. Multilevel active protection achieved through synergetic self-sealing effect PEO itself inhibition provided by an organic inhibitor impregnated pores post-treatment step. The results indicate that coatings, loaded with corrosion inhibitors, can be recommended for exploitation industrial level...
2,6-pyridinedicarboxylate (2,6-PDC) was studied as corrosion inhibitor for pure magnesium. The surface prepared either by polishing or followed treatment with 1 M NaOH solution. results show that 2,6-PDC promotes the formation of a denser protective oxide/hydroxide layer poor in PDC. mechanism proposed includes forming weak PDC-Mg complexes lower free Mg2+ concentration available Mg(OH)2. This leads to growth smaller Mg(OH)2 platelets are more densely packed and hence form layer. highest...
Aqueous Mg battery technology holds significant appeal, owing to the availability of raw materials, high power densities and possibility fast mechanical recharge. However, batteries have so far been prone decreased capacity due self-corrosion anodes from electrochemical redeposition impurities, such as Fe, which results in parasitic cathodically active sites on discharging anode. This work demonstrates that by adding Fe3+-complexing agents like Tiron or salicylate aqueous electrolyte an...
Mg-air primary battery has become an attractive source of energy due to its economic viability, environmental benignity, and high theoretical specific power density. However, low practical delivered self-corrosion fast anode fouling are the main reasons that limit their commercial application. Modification electrolyte chemistry in batteries plays a crucial role improving performance. In this study, impact addition two strong complexing agents at different concentrations aqueous is...
The vast number of small molecules with potentially useful dissolution modulating properties (inhibitors or accelerators) renders currently used experimental discovery methods time- and resource-consuming. Fortunately, emerging computer-assisted can explore large areas chemical space less effort. Here we show how density functional theory calculations machine learning work synergistically to generate robust predictive models that recapitulate experimentally-derived corrosion inhibition...
AA2024 aluminium alloy is widely used in the aerospace industry. However, it known to be highly susceptible localised corrosion, which related its complex microstructure, mainly presence of numerous Cu-rich intermetallic particles. One effective solutions increase their corrosion resistance relies on formation layered double hydroxide (LDH) based conversion coatings (CC). This investigation aims understand how conditions situ Li-Al LDH-CO32-/OH– CC growth affect further protective ability....
Magnesium primary cells are currently experiencing a renaissance following the suggestion of new strategies to boost their performance. The suggested will maintain utilization efficiencies 30-70%, which is considered be relatively modest. In this work, highest ever reported level efficiency 82% achieved for Mg-based cell using synergistic combination electrolyte additives. It demonstrated that joint use sodium nitrate and salicylate as additives allows us reach aforementioned 5 mA/cm2 via...
PEO coatings, aside from their reasonable corrosion protection, also feature a porous microstructure that can serve as repository for inhibitors. This study presents and investigates the high inhibition effect of sodium salt decylphosphonate (DP) when incorporated into coating on magnesium substrate. The interaction DP with both bare PEO-coated substrates was studied to understand its mechanism. Additionally, strategy enhance active anti-corrosion ability DP-containing system suggested...
Abstract Small organic molecules that modulate the degradation behavior of Mg constitute benign and useful materials to modify service environment light metal for specific applications. The vast chemical space potentially effective compounds can be explored by machine learning-based quantitative structure-property relationship models, accelerating discovery potent dissolution modulators. Here, we demonstrate how unsupervised clustering a large number potential modulators structural...
Abstract Selecting effective corrosion inhibitors from the vast chemical space is not a trivial task, as it essentially infinite. Fortunately, machine learning techniques have shown great potential in generating shortlists of inhibitor candidates prior to large-scale experimental testing. In this work, we used responses 58 small organic molecules on magnesium alloy AZ91 and utilized molecular descriptors derived their geometry density functional theory calculations encode information....