Experimental studies on viscosity and tribological characteristics of blends of vegetable oils with CuO nanoparticles as additive

Micro & nano letters

article

Ayamannil Sajeeb¹  Perikinalil Krishnan Rajendrakumar¹ 

[1] Department of Mechanical Engineering, National Institute of Technology Calicut

关键词: lubrication;    friction;    wear resistance;    lubricating oils;    vegetable oils;    nanoparticles;    biodegradable materials;    copper compounds;    viscosity;    lubricants;    additives;    tribological characteristics;    CuO nanoparticles;    low toxicity;    coconut oil;    high wear rate;    commercial lubricant;    mustard oil;    wear resistance;    optimal blend;    environment-friendly base oil;    wear scar diameter;    vegetable oil blends;    biodegradability;    lubricating base oils;    friction coefficient;    viscosity;    metallic interfaces;    CuO;   

DOI  :  10.1049/mnl.2018.5595

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

High biodegradability, renewability and low toxicity of vegetable oils make them excellent lubricating base oils. Coconut oil (CO) when used as a lubricant at metallic interfaces exhibits a low coefficient of friction but high wear rate compared to mineral oils, which limits its application as a commercial lubricant, whereas mustard oil (MO) exhibits better wear resistance. The main objective of this work is to obtain an optimal blend of MO and CO to be used as an environment-friendly base oil and to add an optimal concentration of nanoparticles as an additive to improve the viscosity and reduce the friction and wear rate. The experiments are performed on the blends with MO/(CO + MO) ratio ranging from 10 to 50% and the addition of CuO nanoparticles with concentrations ranging from 0 to 0.4 wt.%. The viscosity and tribological analyses of the CO, MO, their blends, and mineral oil (SAE20W40) are carried out and compared. Both the coefficient of friction and wear scar diameter are found to be lower than those of mineral oils. Further improvements in the tribological characteristics of the blends are attained by the addition of CuO nanoparticles in small concentrations, 0.2 wt.% being optimal.

【 授权许可】

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