Academic Research Journal•2026•DOI: 10.26599/NR.2026.94908686
Corrosion and icing critically threaten the service safety of magnesium (Mg) alloys in aerospace and transportation industries. Although superhydrophobic coatings offer effective anti-corrosion and anti-icing functions, they are limited by susceptibility to failure due to physical damage or capillary condensation. Here, a multifunctional integrated coating (SAAS) is reported, which endows coated Mg alloys with excellent superhydrophobicity, active anti-corrosion performance, anti-icing properties, and fast self-healing capabilities. Layered double hydroxide (LDH) modified and intercalated with sodium laurate (La) acts as nanoreservoirs, releasing La corrosion inhibitors via an anion-exchange process to retard corrosion. Incorporation of MXene provides full-spectrum high absorption and efficient photothermal conversion, achieving a surface temperature of 61 °C under 1.0 sun illumination, which prevents adhesion and accumulation of supercooled droplets. Near-infrared (NIR) irradiation induces macromolecular chain migration and phase transition, enabling fast self-healing of coating damage. The SAAS coating exhibits a water contact angle of 153°, a corrosion current density of 1.294 × 10⁻⁹ A·cm⁻² (four orders of magnitude lower than bare Mg alloy), an icing delay time approximately 23 times longer than the substrate, and a healing rate of about 0.34 cm·s⁻¹ under NIR. This study provides a novel strategy for enhancing aircraft skin durability and offers insights into multifunctional coating design.
Int. Journal of Minerals, Metallurgy and Materials (矿物冶金与材料学报)•2025•DOI: 10.1007/s12613-025-3111-0
Micrometer-sized, irregularly shaped Ti particles (0.5wt% and 1.0wt%) were mixed with an Al–Si–Mg–Zr matrix powder, and a novel Ti-modified Al–Si–Mg–Zr aluminum alloy was subsequently fabricated via laser-powder bed fusion (L-PBF). The results demonstrated that the introduction of Ti particles promoted the formation of near-fully equiaxed grains in the alloy owing to the strong grain refinement of the primary (Al,Si)3(Ti,Zr) nanoparticles. Furthermore, the presence of (Al,Si)3(Ti,Zr) nanoparticles inhibited the decomposition of Si-rich cell boundaries and the precipitation of Si nanoparticles in the α-Al cells. The ultimate tensile strength (UTS), yield strength (YS), and elongation of the as-built 0.5wt% Ti (0.5Ti) alloy were (468 ± 11), (350 ± 1) MPa, and (10.0 ± 1.4)%, respectively, which are comparable to those of the L-PBF Al−Si−Mg−Zr matrix alloy and significantly higher than those of traditional L-PBF Al−Si−Mg alloys. After direct aging treatment at 150°C, the precipitation of secondary nanoparticles notably enhanced the strength of the 0.5Ti alloy. Specifically, the 0.5Ti alloy achieved a maximum UTS of (479 ± 11) MPa and YS of (376 ± 10) MPa. At 250°C, the YS of the L-PBF Ti/Al−Si−Mg−Zr alloy was higher than that of the L-PBF Al−Si−Mg−Zr matrix alloy due to the retention of Si-rich cell boundaries, indicating a higher thermal stability. As the aging temperature was increased to 300°C, the dissolution of Si-rich cell boundaries, desolvation of solid-solution elements, and coarsening of nanoprecipitates led to a decrease in the UTS and YS of the alloy to below 300 and 200 MPa, respectively. However, the elongation increased significantly.