Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105920 - 105920
Published: Jan. 1, 2025
Language: Английский
Applied Surface Science Advances, Journal Year: 2024, Volume and Issue: 20, P. 100587 - 100587
Published: Feb. 24, 2024
The aim of this work was the preparation an environmentally friendly protective coating on AZ31B alloy using Flash plasma electrolytic oxidation (F-PEO) process. It developed with different electrolyte compositions, that determine morphology and properties coatings, being crucial to understand anti-corrosion properties. incorporation carbonate ions proved enhance electrical response F-PEO process, resulting in a more efficient process energy reduced consumption 1.1 kW h m−2μm−1. Surface cross-sectional analysis coatings revealed presence isolated pores structure small pore size (less than 1 µm) delays infiltration aggressive towards substrate. characterisation by XRD, EDX Raman spectroscopy showed amorphous phosphate phases FPEO-CO layer, provide self-restauration effect through dissolution/reprecipitation mechanism. lowest value corrosion current density obtained for coating, 4.60 × 10−7 A·cm−2, together highest impedance modulus (f<0.1 Hz), ⁓104 Ω·cm2, two orders magnitude higher Mg alloy. Furthermore, protection were also analysed immersion test 3.5 wt.% NaCl, confirming excellent long times up 336 (2 weeks). synergy between compact self-repairing ability species plays critical role improving resistance alloy, offering eco-friendly alternative chromate conversion coatings.
Language: Английский
Citations
10
Cleaner Materials, Journal Year: 2024, Volume and Issue: 11, P. 100230 - 100230
Published: Feb. 23, 2024
The significance of Mg (alloy) extends to both the mechanical engineering and medical sectors. However, is known for its high reactivity, posing significant challenges widespread utilization in large-scale lightweight applications. Research has shown that adding small amounts reactive elements, such as Ca, can substantially improve high-temperature oxidation resistance numerous alloys. This diminish reliance on greenhouse gases with global warming potential, typically used protective during processing. In a similar vein, patented Environment-COnscious technology offers distinct advantages by utilizing cost-effective more stable oxide form desired alloying element, notably alkaline earth metals like instead their elemental forms, Mg. development holds considerable importance mitigating carbon footprint throughout manufacturing. While patents production outline method employing various versatile oxides, practical application primarily relied calcium oxide, indicated literature. Therefore, this review brings light state art concerning interaction between molten (alloy), influence technical properties, potential challenges, areas requiring further investigation field. Until now, issue not been discussed from critical holistic approach.
Language: Английский
Citations
9
Ceramics International, Journal Year: 2024, Volume and Issue: 50(17), P. 29703 - 29710
Published: May 18, 2024
In this study, the mechanical behavior and biocompatibility of plasma electrolytic oxidation (PEO)-coated Mg-Zn-Ca alloy specimens were investigated. The coatings synthesized by incorporating KMnO4 Mn3O4 nanoparticles into an solution. An indentation test revealed a significant increase in reduced elastic modulus PEO with incorporated under various loads. This was attributed to higher coating thickness porosity achieved addition Mn-based additives electrolyte. composite prepared exhibited more pronounced reduction pressure. Wettability tests showed that maintained their hydrophilic nature water contact angles range 25–63º. presence provided conducive environment for cell viability. enhanced electrolyte particularly noteworthy. improvement controlled release Mn ions, which generates microenvironment favors cellular activities. study enhances properties, preserves hydrophilicity, improves biocompatibility, thus indicating its potential orthopedic implant applications.
Language: Английский
Citations
8
Journal of Magnesium and Alloys, Journal Year: 2024, Volume and Issue: 12(5), P. 1965 - 1985
Published: May 1, 2024
In this study, a calcium-phosphate coating was formed on Mg–Mn–Ce alloy by the plasma electrolytic oxidation (PEO). The antibiotic vancomycin, widely used in treatment of infections caused Staphylococcus aureus (S. aureus), impregnated into coating. Samples with vancomycin showed high bactericidal activity against S. aureus. mechanical and electrochemical properties coatings were studied, as well vitro cytotoxicity tests vivo mature male rats performed. According to SEM, EDS, XRD XPS data, had developed morphology contained hydroxyapatite, which indicates biocompatibility. analysis roughness without did not reveal any differences, confirming samples. During tests, an increase corrosion resistance more than two times after application PEO revealed. results 28 days implantation samples calcium phosphate no signs inflammation observed, while inflammatory reaction area bare alloy, followed encapsulation. Antibiotic release from show sharp decrease concentration released day 7 then gradual until 28. Throughout experiment, significant deviations condition behavior animals observed; clinical systemic toxic reaction.
Language: Английский
Citations
8
Results in Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 15, P. 100227 - 100227
Published: May 1, 2024
Osteoconductive, biocompatible, and biodegradable magnesium alloys hold great promise as novel materials for orthopaedic vascular implants due to their bone-like mechanical properties. Furthermore, limited utility in therapeutic environments is compounded by inadequate resistance corrosion. Because the impulsive occurrence of corrosion governed loss properties, including materials' fundamental properties various corrosive conditions, mechanism extremely complex. Due incidence numerous factors, inherent presence environments, complexity-ridden.
Language: Английский
Citations
7
Nano-Structures & Nano-Objects, Journal Year: 2024, Volume and Issue: 39, P. 101233 - 101233
Published: June 14, 2024
Language: Английский
Citations
5
Ceramics International, Journal Year: 2024, Volume and Issue: 50(19), P. 36838 - 36848
Published: Oct. 1, 2024
Language: Английский
Citations
5
Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 30, P. 2365 - 2376
Published: April 3, 2024
This study demonstrates that the optimisation of electrical processing parameters during plasma electrolytic oxidation allows single-step incorporation nanoparticles with complex 3D structures into outer porous structure growing PEO coating. In particular, this work evaluates zeolite particle uptake mechanism soft sparking regime. Four aluminate-based electrolytes different concentrations (0–10 g l−1) were studied. The encapsulation Ce within (Ce-zeolite) was evaluated by FTIR, SEM/EDS, XRD and TGA. successful in coatings confirmed SEM-EDS FIB/TEM. Zeolite Ce-loaded incorporated non-reactively adsorption entrapment molten oxide coating growth at surface coatings. Reactive also identified inner layers as a result field assisted migration through flaws defects, leading to their thermal decomposition. corrosion behaviour improved noticeably upon addition nanoparticles, whereas inclusion cerium led an incremental improvement performance.
Language: Английский
Citations
4
Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 323, P. 129659 - 129659
Published: June 29, 2024
Language: Английский
Citations
4
Surface and Coatings Technology, Journal Year: 2024, Volume and Issue: 489, P. 131115 - 131115
Published: July 14, 2024
Language: Английский
Citations
4