Jiang Hongbo, Wang Zifeng, Ma Longtao, Yang Qi, Tang Zijie, Song Xiufeng, Zeng Haibo, Zhi Chunyi
Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Av., Kowloon, Hong Kong, China.
Nanotechnology. 2019 Aug 16;30(33):335704. doi: 10.1088/1361-6528/ab193c. Epub 2019 Apr 15.
Graphene as a coating material that shows high impermeability as an excellent barrier in oxidation and corrosion protection has been reported to be less stable at elevated temperature. Sometimes the formed galvanic cell between the graphene and protective surface will even increase the corrosion speed. In comparison, boron nitride (BN), which shows the same impermeability with graphene, is believed to be a better coating material with its superior thermal and chemical inertness. In this study, an in situ synthesis of BN coatings, grown by boron ink, on both carbon and Cu for anti-oxidation and anti-corrosion purposes has been demonstrated. Thermogravimetric analysis and electrochemical analysis reveal that the BN coatings can effectively prevent the carbon from being oxidized at high temperature in air and adequately slow down the corrosion rate of Cu in sodium chloride solution, respectively. These results indicate that boron ink assisted in situ BN coating has high potential in the applications of oxidation and corrosion protection.
据报道，作为一种涂层材料，石墨烯具有高抗渗性，是氧化和腐蚀防护方面的优异屏障，但在高温下稳定性较差。有时，石墨烯与保护表面之间形成的原电池甚至会加快腐蚀速度。相比之下，氮化硼（BN）与石墨烯具有相同的抗渗性，由于其优异的热稳定性和化学惰性，被认为是一种更好的涂层材料。在本研究中，已证明通过硼墨水在碳和铜上原位合成用于抗氧化和防腐的BN涂层。热重分析和电化学分析表明，BN涂层可以有效防止碳在空气中高温氧化，并分别充分减缓铜在氯化钠溶液中的腐蚀速率。这些结果表明，硼墨水辅助原位BN涂层在氧化和腐蚀防护应用中具有很大潜力。
