@article{Ma2025, 
author = {Jirui Ma and Xiaopeng Lu and Yuxin Zhou and Zhengrong Ai and Yuquan Hao and Qiang Wang and Andrey S. Gnedenkov and Fuhui Wang},
title = {Self-healing coatings on Mg-Li alloy using pH-responsive sepiolite microcontainer loaded with corrosion inhibitors},
year = {2025},
journal = {Journal of Magnesium and Alloys},
volume = {13},
number = {11},
pages = {5511-5524},
keywords = {Mg-Li alloy, Self-healing coating, Sepiolite, Corrosion resistance, Inhibitor},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.09.011},
doi = {10.1016/j.jma.2025.09.011},
abstract = {To enhance the corrosion resistance of Mg-Li alloy, a composite coating system integrating plasma electrolytic oxidation (PEO) with solgel sealing treatment is developed. Two functionalized sepiolite microcontainers (sepiolite-Ce and sepiolite-BA) are constructed by loading cerium ions (Ce3+) via ion exchange and encapsulating barbituric acid (BA) through low-pressure impregnation. The microcontainers are subsequently incorporated into the coating surface through controlled sol-gel deposition process. UV-Vis and ICP-OES analyses reveal that both functionalized sepiolite microcontainers exhibited pH-responsive release characteristics under alkaline conditions. Electrochemical impedance spectroscopy (EIS) tests demonstrate that the inhibitor-containing composite coating has excellent long-term corrosion resistance and self-healing performance. After 240 h of immersion in a 0.5 wt.% NaCl solution, the low-frequency impedance modulus of the composite coating is four orders of magnitude higher than that of the pristine coating.}
}