Tian Yuqin, Li Wei, Yang Qiaoxin, Gong Yuan, Yue Wenfei, Ou Yujing, Li Chunlei, Sheng Xinxin
College of Petrochemical Technology, Lanzhou University of Technology Lanzhou 730050 PR China
Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology Guangzhou 510006 PR China
RSC Adv. 2024 Aug 6;14(34):24661-24670. doi: 10.1039/d4ra03958k. eCollection 2024 Aug 5.
In this study, α-ZrP and SiO composite nanomaterials were used to as phosphating accelerators. Experiments show that 2D nanosheets and 0D nanoparticles modified by PDA (PDA@α-ZrP/SiO) play a synergistic role in effectively increasing the number of phosphate crystals and refining the crystal's size, thereby forming dense and uniform phosphate coatings. The friction resistance and corrosion resistance of phosphate coatings are simultaneously enhanced. Especially when the PDA@α-ZrP/SiO addition amount is 0.55 g L, the coating porosity of phosphate coating drops from 64.24% to 4.38%. The friction resistance coefficient drops from 0.32 to 0.02 and the polarization resistance increased from 1381 Ω cm to 20 520 Ω cm.
在本研究中，α-磷酸锆和二氧化硅复合纳米材料被用作磷化促进剂。实验表明，经多巴胺修饰的二维纳米片和零维纳米颗粒（多巴胺@α-磷酸锆/二氧化硅）在有效增加磷酸盐晶体数量和细化晶体尺寸方面发挥协同作用，从而形成致密且均匀的磷酸盐涂层。磷酸盐涂层的耐磨性能和耐腐蚀性能同时得到增强。特别是当多巴胺@α-磷酸锆/二氧化硅的添加量为0.55 g/L时，磷酸盐涂层的孔隙率从64.24%降至4.38%。摩擦阻力系数从0.32降至0.02，极化电阻从1381 Ω·cm增加到20520 Ω·cm。
