Hexagonal boron nitride/poly(vinyl butyral) composite coatings for corrosion protection of copper

• 作者: Jing Wang Ning Wang Mengnan Liu Chengyue Ge Baorong HOU Guichang Liu Wen Sun Yiteng Hu Yanli Ning
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2022,（1）
• 页码范围: 103-112
• 页数: 10页
• 语种: 英文

摘要

Hexagonal boron nitride (h-BN) fillers are incorporated into poly(vinyl butyral) (PVB) coatings to improve the corrosion protection performance of copper.It has been revealed that the h-BN fillers exhibit an ex-cellent dispersiblility in PVB coating due to the non-covalent interactions between h-BN fillers and the PVB molecules.Electrochemical characterization reveals that the corrosion resistance of the BN-reinforced PVB (BN-P) coating is 5-6 orders of magnitude higher than that of the pristine PVB coating.Photographs and metallography show that the copper substrate beneath the BN-P coating does not suffer from corro-sion after immersion for 2 months,indicating that the BN-P coating can provide a long-term protective barrier for the underlying copper substrate.Loading 0-0.25 g h-BN fillers in 2.0 g PVB,the corrosion pro-tection performance increases with increasing the loading of h-BN fillers.The scratch test results suggest that h-BN fillers do not accelerate copper corrosion when the BN-P coating is damaged.