{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,5]],"date-time":"2025-11-05T11:24:21Z","timestamp":1762341861458,"version":"build-2065373602"},"reference-count":27,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2022,6,15]],"date-time":"2022-06-15T00:00:00Z","timestamp":1655251200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Key R&amp;D Program of China","award":["2020YFB2007300","SKLTKF20B01"],"award-info":[{"award-number":["2020YFB2007300","SKLTKF20B01"]}]},{"name":"Foundation from State Key Laboratory of Tribology","award":["2020YFB2007300","SKLTKF20B01"],"award-info":[{"award-number":["2020YFB2007300","SKLTKF20B01"]}]},{"name":"Beijing Institute of Technology Research Fund Program for Young Scholars","award":["2020YFB2007300","SKLTKF20B01"],"award-info":[{"award-number":["2020YFB2007300","SKLTKF20B01"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>This work studied the lubrication performances of polyalkylene glycols, which are insulating oils, at the steel interface under external electric fields. The results show that external electric fields greatly affect the lubrication performances of polyalkylene glycols, and there is an optimal voltage (\u22121.0 V) for the improvement in friction reduction performance. The surface analysis and experiment results indicate that the polyalkylene glycol adsorption film and the reduction in the amount of FexOy and FeOOH in the tribochemical film contribute to improved friction performance under the negative voltage condition. This work proves that the lubrication performances of insulating oils can be affected by external electric fields as well. A lubrication model was proposed, hoping to provide a basic understanding of the lubrication mechanisms of ether-bond-containing insulating oils in the electric environment.<\/jats:p>","DOI":"10.3390\/nano12122067","type":"journal-article","created":{"date-parts":[[2022,6,16]],"date-time":"2022-06-16T03:01:22Z","timestamp":1655348482000},"page":"2067","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Lubrication Performances of Polyalkylene Glycols at Steel Interface under External Electric Fields"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5956-8870","authenticated-orcid":false,"given":"Xiangyu","family":"Ge","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaodong","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiuyu","family":"Shi","sequence":"additional","affiliation":[{"name":"State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenzhong","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/j.triboint.2014.11.018","article-title":"Lubrication under charged conditions","volume":"84","author":"Xie","year":"2015","journal-title":"Tribol. 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