纳米铜添加剂在装备修复技术中的应用

考察了纳米铜添加剂在不同润滑油中的减摩抗磨性能，采用扫描电子显微镜对磨损表面进行了形貌和元素分析，模拟实际工况进行了300h的发动机台架试验。结果表明：纳米铜添加剂具有良好的减摩抗磨性能，可使润滑油650SN的摩擦系数降低48%，磨痕宽度降低21%；使坦克润滑油50CC的摩擦系数降低40%，磨痕宽度降低33%；使柴油机油15W/40CD和汽油机油15W/40SF的摩擦系数分别降低9%和15%，磨痕宽度分别降低22%和18%。在摩擦过程中，纳米铜添加剂能够在磨损表面形成了一层疏松的自修复膜，这层修复膜隔离了摩擦副之间的直接接触，修复了磨损表面的微损伤，从而起到有效的自修复作用。由纳米铜等添加剂组成的复合型添加剂具有优良的动力性、自修复性和经济性。

The Application of Nano-Cu Additive to Equipments Repairing Technology

The wear resistance and antifriction behavior of nano-Cu additive in different lubrication oil were tested. The feature and the elements of wore surface were analyzed using SEM. The 300h engine bench experiment of nano-Cu additive in lubrication was tested by simulating practical condition. The results indicate that nona-Cu additive has wonderful wear resistance and antifriction performance. The friction coefficient of lubrication oil 650SN, tank lubrication 50CC, lubrication 15W/40CD and 15W/40SF can be reduced by 48%, 40%, 9% and 15% respectively. While their wore track width can be decreased by 21%, 33%, 22% and 18% respectively. Nano-Cu additive can form loose self-repairing film on wore surface. The film isolates the direct contact of frictional pairs and repairs the minute damage of wore surface, So nano-Cu additive shows favorable self-repairing function. The compounding additive containing nano-Cu has good dynamic performance, self-repairing performance and economical efficiency.