Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact
Alcohol aqueous solvents were prepared by individually adding n-propanol, isopropanol, 1,2-propanediol, and glycerol to deionized water for use as lubricants for the electrostatic minimum quantity lubrication (EMQL) machining of aluminum alloys. The tribological characteristics of those formulated a...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/10/11/322 |
| _version_ | 1827644285419257856 |
|---|---|
| author | Xiaodong Hu Ying Wang Hongmei Tang Yu Xia Shuiquan Huang Xuefeng Xu Ruochong Zhang |
| author_facet | Xiaodong Hu Ying Wang Hongmei Tang Yu Xia Shuiquan Huang Xuefeng Xu Ruochong Zhang |
| author_sort | Xiaodong Hu |
| collection | DOAJ |
| description | Alcohol aqueous solvents were prepared by individually adding n-propanol, isopropanol, 1,2-propanediol, and glycerol to deionized water for use as lubricants for the electrostatic minimum quantity lubrication (EMQL) machining of aluminum alloys. The tribological characteristics of those formulated alcohol solvents under EMQL were assessed using a four-ball configuration with an aluminum–steel contact, and their static chemisorption on the aluminum surfaces was investigated. It was found that the negatively charged alcohol lubricants (with charging voltages of −5 kV) resulted in 31% and 15% reductions in the coefficient of friction (COF) and wear scar diameter (WSD), respectively, in comparison with those generated using neutral alcohol lubricants. During the EMQL, static charges could help dissociate the alcohol molecules, generating more negative ions, which accelerated the chemisorption of those alcohol molecules on the aluminum surfaces and thereby yielded a relatively homogeneous-reacted film consisting of more carbon and oxygen. This lubricating film improved the interfacial lubrication, thus producing a better tribological performance for the aluminum alloys. The results achieved from this study will offer a new way to develop high-performance lubrication technologies for machining aluminum alloys. |
| first_indexed | 2024-03-09T18:12:40Z |
| format | Article |
| id | doaj.art-4988549cbbbc4e59ba6612b21fa80007 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T18:12:40Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-4988549cbbbc4e59ba6612b21fa800072023-11-24T08:58:48ZengMDPI AGLubricants2075-44422022-11-01101132210.3390/lubricants10110322Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel ContactXiaodong Hu0Ying Wang1Hongmei Tang2Yu Xia3Shuiquan Huang4Xuefeng Xu5Ruochong Zhang6College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, ChinaAlcohol aqueous solvents were prepared by individually adding n-propanol, isopropanol, 1,2-propanediol, and glycerol to deionized water for use as lubricants for the electrostatic minimum quantity lubrication (EMQL) machining of aluminum alloys. The tribological characteristics of those formulated alcohol solvents under EMQL were assessed using a four-ball configuration with an aluminum–steel contact, and their static chemisorption on the aluminum surfaces was investigated. It was found that the negatively charged alcohol lubricants (with charging voltages of −5 kV) resulted in 31% and 15% reductions in the coefficient of friction (COF) and wear scar diameter (WSD), respectively, in comparison with those generated using neutral alcohol lubricants. During the EMQL, static charges could help dissociate the alcohol molecules, generating more negative ions, which accelerated the chemisorption of those alcohol molecules on the aluminum surfaces and thereby yielded a relatively homogeneous-reacted film consisting of more carbon and oxygen. This lubricating film improved the interfacial lubrication, thus producing a better tribological performance for the aluminum alloys. The results achieved from this study will offer a new way to develop high-performance lubrication technologies for machining aluminum alloys.https://www.mdpi.com/2075-4442/10/11/322alcoholselectrostatic minimum quantity lubricationaluminum–steel contactfriction and wear |
| spellingShingle | Xiaodong Hu Ying Wang Hongmei Tang Yu Xia Shuiquan Huang Xuefeng Xu Ruochong Zhang Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact Lubricants alcohols electrostatic minimum quantity lubrication aluminum–steel contact friction and wear |
| title | Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact |
| title_full | Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact |
| title_fullStr | Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact |
| title_full_unstemmed | Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact |
| title_short | Lubrication Performance and Mechanism of Electrostatically Charged Alcohol Aqueous Solvents with Aluminum–Steel Contact |
| title_sort | lubrication performance and mechanism of electrostatically charged alcohol aqueous solvents with aluminum steel contact |
| topic | alcohols electrostatic minimum quantity lubrication aluminum–steel contact friction and wear |
| url | https://www.mdpi.com/2075-4442/10/11/322 |
| work_keys_str_mv | AT xiaodonghu lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT yingwang lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT hongmeitang lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT yuxia lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT shuiquanhuang lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT xuefengxu lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact AT ruochongzhang lubricationperformanceandmechanismofelectrostaticallychargedalcoholaqueoussolventswithaluminumsteelcontact |