Qing Han , Pengcheng Wang , Rongnan Wang , Qi Chen , Bo Zhang , Dejun Li , Yunzhou Xue , Gui Yu , Birong Luo
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Through providing appropriate amount of B/N dopant, conformal growth of BNG films on Cu alloy string substrate with sharp step-terraces topography can be optimized, and largely improving its robust anti-corrosion performance in both</em> short-term electrochemical and long-term ambient corrosion tests for evaluation<em>. On one hand, the conformal coupling between in-situ grown BNG and Cu alloy string can form a strong interaction which limits the interfacial diffusion of corrosive species. On the other hand, once the defects oxidation is initialized, B/N modified graphene can reduce its conductivity, then suppressing the electrochemical corrosion in the long-term protection. 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引用次数: 0
摘要
对于拉弦乐器来说,金属弦在日常使用中总会受到汗渍腐蚀和环境氧化。一种不会改变其音色和音调的特殊薄保护涂层是非常理想的。本研究提出了一种二维(2D)B/N 改性石墨烯(BNG)薄膜涂层,通过化学气相沉积(CVD)沉积在铜合金琴弦表面作为腐蚀屏障。通过提供适量的 B/N 掺杂剂,可以优化 BNG 薄膜在 Cu 合金弦基底上的保形生长,使其具有尖锐的阶梯状地形,并在短期电化学和长期环境腐蚀测试评估中大大提高了其稳健的防腐蚀性能。一方面,原位生长的 BNG 与 Cu 合金串之间的保形耦合可以形成很强的相互作用,从而限制腐蚀物种的界面扩散。另一方面,一旦缺陷氧化开始,B/N 修饰的石墨烯会降低其导电性,从而在长期保护中抑制电化学腐蚀。随着对原位涂层方法和增强抗腐蚀机理的深入了解和认识,这项工作将拓展二维材料作为原子厚保护涂层在一些特殊设备和仪器上的潜在应用。
Conformal growth of B/N modified graphene on metal strings by chemical vapor deposition for robust protection
For string-plucked instruments, the metal strings are always subjected to sweating corrosion and ambient oxidation during the daily use. A specifically thin protection coating, which will not alter its timbre and tone, is highly desirable. In this study, a two-dimensional (2D) coating of B/N-modified graphene (BNG) films is proposed to deposit on the surface of Cu alloy strings via chemical vapor deposition (CVD) as a corrosion barrier. Through providing appropriate amount of B/N dopant, conformal growth of BNG films on Cu alloy string substrate with sharp step-terraces topography can be optimized, and largely improving its robust anti-corrosion performance in both short-term electrochemical and long-term ambient corrosion tests for evaluation. On one hand, the conformal coupling between in-situ grown BNG and Cu alloy string can form a strong interaction which limits the interfacial diffusion of corrosive species. On the other hand, once the defects oxidation is initialized, B/N modified graphene can reduce its conductivity, then suppressing the electrochemical corrosion in the long-term protection. With the insights and understanding of in-situ coating method and the enhanced anti-corrosion mechanisms, this work will extend the potential applications of 2D materials as an atomic-thick protectioncoating for some special devices and instruments.
期刊介绍:
Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals.
Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena.
Keywords:
• topological insulators/superconductors, majorana fermions, Wyel semimetals;
• quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems;
• layered superconductivity, low dimensional systems with superconducting proximity effect;
• 2D materials such as transition metal dichalcogenides;
• oxide heterostructures including ZnO, SrTiO3 etc;
• carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.)
• quantum wells and superlattices;
• quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect;
• optical- and phonons-related phenomena;
• magnetic-semiconductor structures;
• charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling;
• ultra-fast nonlinear optical phenomena;
• novel devices and applications (such as high performance sensor, solar cell, etc);
• novel growth and fabrication techniques for nanostructures