Formulation and Viscosity Evaluation of Copper Oxide Based Nanolubricants

Energy wasted in friction can be reduced by adopting more effective lubrication strategy. Many studies reported improved friction performance of lubricants containing ultrafine additives. Present work deals with viscosity characterization of nanolubricants based on Copper oxide (CuO) nanoparticles. Nanolubricants are prepared by suspending commercially available Copper oxide nanoparticles in engine oil 15W40 in different proportions. A two step method was used for preparation of nanolubricants which involves mechanical agitation followed by ultrasonication. Kinematic viscosity of nanolubricant samples is measured as per IP 70. Comparative results are presented for different weight percentages of CuO nanoparticles. Dispersion stability of prepared nanolubricant samples is assessed by visual inspection over the time. Results implicate significant viscosity change due to addition of copper oxide nanoparticles.