Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease

Grease, a type of lubricant, finds applications in various mechanical components due to advantages such as shape stability and sealing. However, grease is classified as a non-Newtonian fluid, and its film formation behavior is not fully understood to date due to variations in the mechanism related t...

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Main Authors: Jeong-Bin Chi, Hyuk-Jae Ma, Gyu-Sun Lee, Ju-Ho Park, Dae-Eun Kim
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Lubricants
Subjects:
Online Access:https://www.mdpi.com/2075-4442/12/1/26
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author Jeong-Bin Chi
Hyuk-Jae Ma
Gyu-Sun Lee
Ju-Ho Park
Dae-Eun Kim
author_facet Jeong-Bin Chi
Hyuk-Jae Ma
Gyu-Sun Lee
Ju-Ho Park
Dae-Eun Kim
author_sort Jeong-Bin Chi
collection DOAJ
description Grease, a type of lubricant, finds applications in various mechanical components due to advantages such as shape stability and sealing. However, grease is classified as a non-Newtonian fluid, and its film formation behavior is not fully understood to date due to variations in the mechanism related to the film formation behavior of grease based on factors like the base oil, bleed oil, thickener, and additives. In this study, the film formation behavior of fluorine-based grease was analyzed through the 3D profile of the grease after a friction test. In particular, the film formation behavior of the grease during sliding motion was analyzed. The experimental equipment used was a reciprocating-motion-type experimental equipment. Variations in the 3D profile were observed based on the speed and the cycle, indicating differences in the film formation behavior corresponding to changes in viscosity. In contrast to numerous studies that have observed the film formation behavior of grease under rolling motion, investigating the film formation behavior during the initial cycles of sliding motion will provide a profound understanding of the grease’s film formation process.
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spelling doaj.art-51c0a1b09ac54ba7824fd6e1303abc5d2024-01-29T14:04:24ZengMDPI AGLubricants2075-44422024-01-011212610.3390/lubricants12010026Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based GreaseJeong-Bin Chi0Hyuk-Jae Ma1Gyu-Sun Lee2Ju-Ho Park3Dae-Eun Kim4Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of KoreaActuator Development Team, LG Innotek, Seoul 15588, Republic of KoreaActuator Development Team, LG Innotek, Seoul 15588, Republic of KoreaDepartment of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of KoreaGrease, a type of lubricant, finds applications in various mechanical components due to advantages such as shape stability and sealing. However, grease is classified as a non-Newtonian fluid, and its film formation behavior is not fully understood to date due to variations in the mechanism related to the film formation behavior of grease based on factors like the base oil, bleed oil, thickener, and additives. In this study, the film formation behavior of fluorine-based grease was analyzed through the 3D profile of the grease after a friction test. In particular, the film formation behavior of the grease during sliding motion was analyzed. The experimental equipment used was a reciprocating-motion-type experimental equipment. Variations in the 3D profile were observed based on the speed and the cycle, indicating differences in the film formation behavior corresponding to changes in viscosity. In contrast to numerous studies that have observed the film formation behavior of grease under rolling motion, investigating the film formation behavior during the initial cycles of sliding motion will provide a profound understanding of the grease’s film formation process.https://www.mdpi.com/2075-4442/12/1/26greasesliding motionspeedviscosityfilm thickness
spellingShingle Jeong-Bin Chi
Hyuk-Jae Ma
Gyu-Sun Lee
Ju-Ho Park
Dae-Eun Kim
Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
Lubricants
grease
sliding motion
speed
viscosity
film thickness
title Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
title_full Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
title_fullStr Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
title_full_unstemmed Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
title_short Effect of Speed and Number of Sliding Cycles on the Film Formation Behavior of Fluorine-Based Grease
title_sort effect of speed and number of sliding cycles on the film formation behavior of fluorine based grease
topic grease
sliding motion
speed
viscosity
film thickness
url https://www.mdpi.com/2075-4442/12/1/26
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