Controllable synthesis of different morphologies of CuO nanostructures for tribological evaluation as water-based lubricant additives

Friction

Junhua Zhao¹  Chunli Zhang¹  Pingyu Zhang¹  Guangbin Yang¹  Yujuan Zhang¹  Chuanping Gao¹  Shengmao Zhang¹ 

[1] Engineering Research Center for Nanomaterials, Henan University, 475004, Kaifeng, China;

关键词: CuO nanostructures;    morphology;    water-based lubricant additive;    tribological properties;   

DOI  :  10.1007/s40544-020-0382-3

来源: Springer

【 摘 要 】

In this study, water soluble CuO nanostructures having nanobelt, nanorod, or spindle morphologies were synthesized using aqueous solutions of Cu(NO3)2·3H2O and NaOH by adjusting the type of surface modifier and reaction temperature. The effect of morphologies of these various CuO nanostructures as water-based lubricant additives on tribological properties was evaluated on a UMT-2 micro-friction tester, and the mechanisms underlying these properties are discussed. The three different morphologies of CuO nanostructures exhibited excellent friction-reducing and anti-wear properties. Tribological mechanisms differed in the initial stage of frictional interactions, but in the stable stage, a tribochemical reaction film and adsorbed lubricious film on the rubbing surfaces played important roles in hindering direct contact between friction pairs, leading to improved tribological properties.

【 授权许可】

CC BY