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采用KBH4液相还原法制备了纳米铜添加剂,采用透射电子显微镜对纳米铜添加剂进行了表征,通过摩擦磨损试验机测试了纳米铜添加剂对4种不同粗糙度摩擦表面所表现的抗磨减摩性能,并对不同的磨损表面进行了光学显微镜和能谱分析。结果表明:纳米铜添加剂为分散性能稳定的20nm的球形颗粒;纳米铜添加剂具有良好的抗磨减摩性能,尤其是对于光滑的摩擦表面,与基础油相比,可使摩擦因数降低24%。纳米铜添加剂还具有良好的自修复性能,摩擦过程中,能够在摩擦表面形成一层高弹性低硬度的自修复膜,自修复效果对于光滑的摩擦表面更为显著。
Nanometer copper additive was prepared by KBH4 liquid reduction method, and the nano-copper additive was characterized by transmission electron microscopy. The friction and wear resistance of nano-copper additive on four different roughness surfaces was tested by friction and wear tester , And different wear surfaces were analyzed by light microscopy and energy spectrum. The results show that the nano-copper additive is a 20 nm spherical particle with stable dispersion. The nano-copper additive has good anti-wear and anti-friction properties, especially for the smooth friction surface, which can reduce the friction coefficient by 24% compared with the base oil. The nano-copper additive also has good self-healing properties. During the rubbing process, a self-healing film with high elasticity and low hardness can be formed on the friction surface. The self-healing effect is more remarkable for the smooth friction surface.