在这项研究中,钢板上镍(Ni)-纤维素纳米纤维(CNF)复合电镀薄膜的耐磨性(JISSPCC,冷轧钢)进行了评估,包括它们的表面和微观结构特性。在CNF样本中,使用2,2,6,6-四甲基哌啶1-氧基(TEMPO)-氧化的CNF。作为球盘磨损试验的结果,其中钢(SUJ2)球用作配对材料,在本研究中,向镀液中添加1g/L的CNF获得的镀膜显示出最高的耐磨性。与没有CNF的常规镀镍膜相比,电镀侧的磨损量减少了约79%,球侧的数量显着减少了94%。磨损疤痕的微观结构分析表明,共沉积的CNF在磨损方向上拉伸的区域,表明减磨效果是由骨料内单个CNF之间的滑动引起的。此外,当Ni微晶尺寸变细时,镀膜的硬度增加。证实了细CNFs的共沉积在改善硬度方面是有效的,而一定程度的聚集CNF的共沉积在表现出减磨效果方面是有效的。
In this study, the wear resistance of nickel (Ni)-cellulose nanofiber (CNF) composite electroplated films on steel plates (JIS SPCC, cold-rolled steel) was evaluated, including their surface and microstructural properties. In the CNF sample, 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)-oxidized CNF was used. As a result of the ball-on-disk abrasion test, in which steel (SUJ2) balls were used as the counterpart material, the plated film obtained with the addition of 1 g/L of CNF to the plating solution showed the highest wear resistance in this study. Compared to the conventional Ni-plated film without CNF, the abrasion loss volume on the plated side was reduced by approximately 79%, and that on the ball side was reduced remarkably by 94%. A microstructural analysis of the abrasion scars showed areas where co-deposited CNFs were stretched in the direction of abrasion, suggesting that the wear reduction effect was caused by sliding between the individual CNFs within the aggregates. Moreover, the hardness of the plated film increased when the Ni crystallite size became finer. It was confirmed that the co-deposition of fine CNFs is effective in improving hardness, whereas the co-deposition of a certain degree of aggregated CNFs is effective in exhibiting the wear reduction effect.