Tribology Evaluation on a Four-Ball Tribometer Lubricated by Al2O3/PAG Nanolubricants

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-20 DOI:10.15282/ijame.21.1.2024.09.0855

Safril, W.H. Azmi, M. Z. Sharif, N. Zawawi

{"title":"Tribology Evaluation on a Four-Ball Tribometer Lubricated by Al2O3/PAG Nanolubricants","authors":"Safril, W.H. Azmi, M. Z. Sharif, N. Zawawi","doi":"10.15282/ijame.21.1.2024.09.0855","DOIUrl":null,"url":null,"abstract":"Nanolubricants can improve the tribological properties for application in automotive systems. By reducing the friction rate of the internal components with nanolubricants, the service life of a compressor used in automotive air conditioning (AAC) can be extended. The investigation aims to determine the optimal volume concentration of nanolubricants for achieving the highest performance in tribological properties. Al2O3 nanoparticles dispersed in a polyalkylene glycol (PAG ND12) base at volume concentrations of 0.01%, 0.03%, and 0.05% were investigated to improve the lubrication system in the AAC compressor. The stability investigations were carried out by comparing absorbance conditions using a UV-Vis Spectrophotometer at each volume concentration for 210 days. Koehler's four-ball tribometer was used to measure coefficient of friction (COF) and friction torque at a load of 40.0 kg and a speed of 1200 rpm. The stability study of nanolubricant yielded average absorbance values of 0.752, 0.755, and 0.684, respectively. The average COF values of the nanolubricants of 0.01%, 0.03%, and 0.05% were 0.104, 0.078, and 0.117, while the pure lubricant was 0.095. Further investigation on friction torque resulted in a decrease in the pure lubricant of 0.064%, and for nanolubricant Al2O3/PAG ND12, a decrease of 0.087%, 0.057%, and 0.092%, respectively. The results indicated that a concentration of 0.03% produced the greatest reduction in COF and torque, namely 0.0078% and 0.0578%, correspondingly. Therefore, it is recommended to use Al2O3/PAG ND12 nanolubricant at a volume concentration of 0.03% because it is the most optimal in terms of stability and has the highest COF and frictional torque reduction.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":" 28","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.15282/ijame.21.1.2024.09.0855","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Nanolubricants can improve the tribological properties for application in automotive systems. By reducing the friction rate of the internal components with nanolubricants, the service life of a compressor used in automotive air conditioning (AAC) can be extended. The investigation aims to determine the optimal volume concentration of nanolubricants for achieving the highest performance in tribological properties. Al2O3 nanoparticles dispersed in a polyalkylene glycol (PAG ND12) base at volume concentrations of 0.01%, 0.03%, and 0.05% were investigated to improve the lubrication system in the AAC compressor. The stability investigations were carried out by comparing absorbance conditions using a UV-Vis Spectrophotometer at each volume concentration for 210 days. Koehler's four-ball tribometer was used to measure coefficient of friction (COF) and friction torque at a load of 40.0 kg and a speed of 1200 rpm. The stability study of nanolubricant yielded average absorbance values of 0.752, 0.755, and 0.684, respectively. The average COF values of the nanolubricants of 0.01%, 0.03%, and 0.05% were 0.104, 0.078, and 0.117, while the pure lubricant was 0.095. Further investigation on friction torque resulted in a decrease in the pure lubricant of 0.064%, and for nanolubricant Al2O3/PAG ND12, a decrease of 0.087%, 0.057%, and 0.092%, respectively. The results indicated that a concentration of 0.03% produced the greatest reduction in COF and torque, namely 0.0078% and 0.0578%, correspondingly. Therefore, it is recommended to use Al2O3/PAG ND12 nanolubricant at a volume concentration of 0.03% because it is the most optimal in terms of stability and has the highest COF and frictional torque reduction.

查看原文本刊更多论文

使用 Al2O3/PAG 纳米润滑剂润滑的四球摩擦磨损计的摩擦学评估

纳米润滑剂可以改善汽车系统的摩擦学特性。通过使用纳米润滑剂降低内部组件的摩擦率，可以延长汽车空调（AAC）压缩机的使用寿命。这项研究旨在确定纳米润滑剂的最佳体积浓度，以实现最高的摩擦学性能。为了改善 AAC 压缩机的润滑系统，研究人员对分散在聚亚烷基二醇（PAG ND12）基质中的 Al2O3 纳米粒子进行了研究，其体积浓度分别为 0.01%、0.03% 和 0.05%。通过使用紫外可见分光光度计比较各体积浓度下 210 天的吸光度条件，进行了稳定性研究。在负载为 40.0 kg、转速为 1200 rpm 的条件下，使用 Koehler 四球摩擦仪测量摩擦系数（COF）和摩擦扭矩。纳米润滑剂稳定性研究得出的平均吸光度值分别为 0.752、0.755 和 0.684。0.01%、0.03% 和 0.05% 纳米润滑剂的平均 COF 值分别为 0.104、0.078 和 0.117，而纯润滑剂为 0.095。对摩擦扭矩的进一步研究表明，纯润滑剂的摩擦扭矩降低了 0.064%，而纳米润滑剂 Al2O3/PAG ND12 的摩擦扭矩分别降低了 0.087%、0.057% 和 0.092%。结果表明，浓度为 0.03% 时，COF 和扭矩的降低幅度最大，分别为 0.0078% 和 0.0578%。因此，建议使用体积浓度为 0.03% 的 Al2O3/PAG ND12 纳米润滑剂，因为它的稳定性最佳，COF 和摩擦扭矩的降低幅度也最大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.