Ce/LDHs coating modified by GO applied on AZ31 alloys corrosion protection

Surface Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

Layered double hydroxides (LDHs) exhibit anion exchange properties and adjustable characteristics, which make them suitable for applications in the field of anticorrosion. However, smooth growth pattern a single LDHs nanosheet limits its effectiveness blocking corrosive media. Graphene oxide (GO) has large specific surface area numerous oxygen-containing functional groups on surface, can form strong interactions with polar molecules. This inhibits migration small ions, such as Cl − . In this work, Ce was incorporated into micro-arc oxidation (MAO) coating AZ31 alloy by immersion cerium salt solution, GO using hydrothermal solution to prepare layered hydroxide composite (Ce/LDHs-G). The significance charge transfer resistance ( R ct ) mainly reflects process at electrode/electrolyte interface. Ce/LDHs-G increased one order magnitude compared MAO coating. corrosion current density i corr 3.73 × 10 −8 A cm −2 , lower than that (1.56 −6 ). Additionally, cumulative hydrogen evolution over 336 h lower, indicating provides effective protection alloy.

Language: Английский

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Comprehensive study on corrosion and discharge performance of Mg-Ca alloy with high Ca content

Journal of Materials Research and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Optimizing the Mechanical Properties and Corrosion Performance of Low-Alloyed Mg-Zn-Ca Alloy by Regulating Zn/Ca Atomic Ratios

Solids, Journal Year: 2025, Volume and Issue: 6(2), P. 17 - 17

Published: April 14, 2025

The microstructural, mechanical and corrosion properties of low-alloyed Mg-Zn-Ca alloys with different Zn/Ca atomic ratios were investigated. results show that the microstructure extruded Mg-1Zn-0.3Ca (ZX1.0) alloy mainly consists α-Mg Ca2Mg6Zn3 phases a small amount Mg2Ca phase. In contrast, phase disappears in Mg-1.4Zn-0.3Ca (ZX1.4), Mg-1.8Zn-0.3Ca (ZX1.8) Mg-2.3Zn-0.5Ca (ZX2.3). are distributed along extrusion direction, showing irregular particle shapes banded particles. Meanwhile, grain size is reduced gradually increase Zn Ca contents, decreasing from 1.87 μm ZX1.0 to 1.28 ZX2.3 alloy. Fine strengthening second-phase yield strength ultimate tensile addition, when ratio same, total elemental content dominates effect on properties. When increasing ratio, potential difference between Mg matrix increased, resulting an galvanic corrosion. negative volume fraction second positive fine determine performance together. Therefore, ZX1.8 exhibits best resistance, 0.14 mm/y.

Language: Английский

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Enhancing Microstructure and Discharge Performance of Extruded AZ61 Anode for Mg-Air Battery via Ultrasonic Vibration Treatment

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 178288 - 178288

Published: Dec. 1, 2024

Language: Английский

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