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Simple and scalable synthesis of super-repellent multilayer nanocomposite coating on Mg alloy with mechanochemical robustness,high-temperature endurance and electric protection

引用

Journal of Magnesium and Alloys 2022年第9期10卷 2446-2459页

作者： Shuqi Wang Yaming Wang Junchen Chen Yongchun Zou Jiahu Ouyang Dechang Jia Yu Zhou Institute for Advanced Ceramics Harbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China Center of Analysis and Measurement Harbin Institute of TechnologyHarbin 150001China School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China

Multi-functionalization is the future development direction for protective coatings on metal surface,but has not yet been explored a *** effective integration of multiple functions into one material remains a huge ***,a superhydrophobic multilayer coating integrated with multidimensional organic-inorganic components is designed on magnesium alloy via one-step plasma-induced thermal field assisted crosslinking deposition(PTCD)processing followed by after-thermal *** porous MgO ceramic layer and polytetrafluoroethylene(PTFE)nano-particles work as the bottom layer skeleton and filler components separately,forming an organic-inorganic multilayer structure,in which organic nano-particles can be crosslinked and cured to form a compact polymer-like outer layer with hierarchical surface ***,the chemical robustness after prolonged exposure to aqua regia,strong base and simulated seawater solution profits from polymer-like nanocomposite layer uniformly and compactly across the film ***,the self-similar multilayer structure coating endows it attractive functions of strong mechanical robustness(>100th cyclic rotary abrasion),stable and ultra-low friction coefficient(about 0.084),high-temperature endurance,and robust *** organic-inorganic multilayer coating also exhibits high insulating property with breakdown voltage of 1351.8±42.4 V,dielectric strength of 21.4±0.7 V/μm and resistivity of 3.2×10^(10)Ω·*** excellent multifunction benefits from ceramic bottom skeleton,the assembly and deposition of multidimensional nano-particles,and the synergistic effect of organic inorganic *** study paves the way for designing next generation protective coating on magnesium alloy with great potential for multifunctional applications.

关键词： Magnesium alloy Multifunctional multilayer coating mechanochemical robustness Robust wettability High-temperature endurance

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