聚酰胺酰亚胺/聚四氟乙烯复合涂层的制备及其摩擦学性能和耐腐蚀性能数据集

制备了具有良好摩擦学性能和优异耐腐蚀性能的聚酰胺酰亚胺/聚四氟乙烯(PAI/PTFE)多功能复合涂层. 采用CSM摩擦磨损试验机评估了涂层的摩擦学性能，采用P4000A电化学工作站研究了PAI/PTFE复合涂层在质量分数为3.5% NaCl溶液中的抗电化学腐蚀性能. 重点研究了PTFE与PAI的固体质量比对涂层摩擦学性能和耐腐蚀性能的影响. 结果表明：适量PTFE的引入极大增强了PAI涂层的摩擦学性能和耐腐蚀性能. 特别是，当PTFE与PAI的固体质量比为0.6时，涂层的摩擦学性能最佳，摩擦系数为0.075，磨损率为3.72×10-6 mm3/(N·m). 当PTFE与PAI的固体质量比为1时，复合涂层在质量分数为3.5%的NaCl溶液中浸泡240 h后涂层的低频阻抗值∣Z∣0.01 Hz高达3.83×109 Ω∙cm2，仍表现出较好的耐腐蚀性能. 此外，经过240 h中性盐雾试验，复合涂层表面没有出现起泡、生锈等现象. 复合涂层具有如此优异的摩擦学性能和耐腐蚀性能归因于PTFE优异的润滑性能以及涂层对腐蚀介质阻隔性能的增强.

A multifunctional polyamide-imide/polytetrafluoroethylene (PAI/PTFE) composite coating with excellent tribological properties and superior corrosion resistance was fabricated. The tribological properties of the coating were evaluated using a CSM friction and wear tester, while the electrochemical corrosion resistance of the PAI/PTFE composite coating in 3.5% NaCl solution (by mass fraction) was investigated with a P4000A electrochemical workstation. The effect of the solid mass ratio of PTFE to PAI on the tribological and corrosion resistance properties of the coating was primarily studied. The results show that the introduction of an appropriate amount of PTFE greatly enhances the tribological and corrosion resistance properties of the PAI coating. In particular, when the solid mass ratio of PTFE to PAI is 0.6, the coating exhibits the optimal tribological properties, with a friction coefficient of 0.075 and a wear rate of 3.72×10^-6 mm³/(N·m). When the solid mass ratio of PTFE to PAI is 1, the composite coating still shows excellent corrosion resistance after being immersed in 3.5% NaCl solution (by mass fraction) for 240 h, with its low-frequency impedance |Z| at 0.01 Hz reaching as high as 3.83×10^9 Ω·cm². In addition, after 240 h of neutral salt spray test, no blistering, rusting or other defects appear on the surface of the composite coating. The excellent tribological and corrosion resistance properties of the composite coating are attributed to the superior lubricating performance of PTFE and the enhanced barrier property of the coating against corrosive media.