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Research Article | Open Access

On the electric behaviour of conductive grease inside the contact zone

Yuxin ZHOU1( ), Jinjie LIU2, Xinming LI2, He CHONG1, Bo HAN1, Qinghua BAI2
SKF (Shanghai) Automotive Technologies Co., Ltd., Shanghai 201814, China
School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao 266250, China
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An erratum to this article is available online at:
https://doi.org/10.1007/s40544-024-0882-7

Graphical Abstract

Abstract

Conductive grease has been considered as a potential solution in addressing electric erosion issue inside motor bearings. Understanding the conductive grease performance, especially the electric and tribological behaviour is crucial for its application. This paper combines bulk grease characterization and contact film study considering both electrical and tribological loading conditions. The results show that the electric performance for the selected conductive grease sample is electric field dependent, including both frequency and voltage amplitude. Its film impedance inside the contact area is closely related to the external electric field, running condition, and lubrication regime. The following film impedance calculation tells that not only bulk grease electric parameters, but the contact parameter, lubricant film contour and lubrication condition should be considered when performing the overall bearing electrical modelling.

Keywords

Electric erosionlubricant conductivitygreasefilm impedance

References

[1]
Kalaiselvi J, Srinivas S. Bearing currents and shaft voltage reduction in dual-inverter-fed open-end winding induction motor with reduced CMV PWM methods. IEEE Trans Ind Electron 62(1): 144–152 (2015)
Crossref Google Scholar
[2]
Robles E, Fernandez M, Ibarra E, Andreu J, Kortabarria I. Mitigation of common mode voltage issues in electric vehicle drive systems by means of an alternative AC-decoupling power converter topology. Energies 12(17): 3349 (2019)
Crossref Google Scholar
[3]
He F, Xie G X, Luo J B. Electrical bearing failures in electric vehicles. Friction 8(1): 4–28 (2020)
Crossref Google Scholar
[4]
Zika T. Electric discharge damaging in lubricated rolling contacts. Ph.D. Thesis. Vienna (Austria): Vienna University of Technology, 2010.
[5]
Oliver J, Guerrero G, Goldman J. Ceramic bearings for electric motors. In: Proceedings of the IEEE-IAS/PCA Cement Industry Conference (IAS/PCA CIC), Toronto, Canada, 2015: 1–11.
Crossref Google Scholar
[6]
Schiferl R F, Melfi M J. Bearing current remediation options: Sources, investigative measurements, and installation modifications to reduce damage as a result of bearing currents. IEEE Ind Appl Mag 10(4): 40–50 (2004)
Crossref Google Scholar
[7]
Trelleborg. Turcon MC1 and MC2 materials-uniquely electrically conductive, 2020. Available at https://www.trelleborg.com/zh-cn/seals/products-and-solutions/latest-innovations/turcon-mc1-mc2.
[8]
Chen Y, Jha S, Raut A, Zhang W Y, Liang H. Performance characteristics of lubricants in electric and hybrid vehicles: A review of current and future needs. Front Mech Eng 6: 571464 (2020)
Crossref Google Scholar
[9]
Ge X Y, Xia Y Q, Shu Z Y. Conductive and tribological properties of lithium-based ionic liquids as grease base oil. Tribol Trans 58(4): 686–690 (2015)
Crossref Google Scholar
[10]
Tu C J, Chen Z H, Xia J T. Thermal wear and electrical sliding wear behaviors of the polyimide modified polymer-matrix pantograph contact strip. Tribol Int 42(6): 995–1003 (2009)
Crossref Google Scholar
[11]
Holm R. Electric Contacts; Theory and Application. Heidelberg (Germany): Springer Berlin, 1967.
Crossref
[12]
He L, Chen Y, Tian F, Zeng J, Yang X, Ye Z. Research progress and application of conductive grease. J Harbin Univ Sci Technol 29(2) (2022)
Google Scholar
[13]
Cao Z F, Xia Y Q, Chen C, Zheng K, Zhang Y. A synergetic strategy based on laser surface texturing and lubricating grease for improving the tribological and electrical properties of Ag coating under current-carrying friction. Friction 9(5): 978–989 (2021)
Crossref Google Scholar
[14]
Fan X Q, Xia Y Q, Wang L P. Tribological properties of conductive lubricating greases. Friction 2(4): 343–353 (2014)
Crossref Google Scholar
[15]
Kuo M C, Hoover W R, Akkala M W, Mehlhorn W L. Conductive greases and methods for using conductive greases in motors. U.S. Patent 0062350A1, Mar. 2005
[16]
Wang Z Y, Xia Y Q, Liu Z L, Wen Z Z. Conductive lubricating grease synthesized using the ionic liquid. Tribol Lett 46(1): 33–42 (2012)
Crossref Google Scholar
[17]
Cao Z F, Xia Y Q, Ge X Y. Conductive capacity and tribological properties of several carbon materials in conductive greases. Ind Lubr Tribol 68(5): 577–585 (2016)
Crossref Google Scholar
[18]
Ge X Y, Xia Y Q, Shu Z Y, Zhao X P. Conductive grease synthesized using nanometer ATO as an additive. Friction 3(1): 56–64 (2015)
Crossref Google Scholar
[19]
Graves S M, Rodriguez D A S, Grendahl T N, Hain A. Electric motor rotor discharge protection. USA. Patent 11088582, Nov. 2021.
[20]
Kempski A. Capacitively coupled discharging currents in bearings of induction motor fed from PWM (pulsewidth modulation) inverters. J Electrost 51–52: 416–423 (2001)
Crossref Google Scholar
[21]
Lugt P M. Grease Lubrication in Rolling Bearings. John Wiley & Sons Ltd., 2012.
Crossref
[22]
Luo J B, Shen M W, Wen S Z. Tribological properties of nanoliquid film under an external electric field. J Appl Phys 96(11): 6733–6738 (2004)
Crossref Google Scholar
[23]
Xie G X, Guo D, Luo J B. Lubrication under charged conditions. Tribol Int 84: 22–35 (2015)
Crossref Google Scholar
[24]
Xie G X, Luo J B, Guo D, Liu S H. Nanoconfined ionic liquids under electric fields. Appl Phys Lett 96(4): 043112 (2010)
Crossref Google Scholar
[25]
Luo J B, He Y, Zhong M, Jin Z M. Gas bubble phenomenon in nanoscale liquid film under external electric field. Appl Phys Lett 89(1): 013104 (2006)
Crossref Google Scholar
[26]
Xie G X, Luo J B, Guo D, Liu S H, Li G. Damages on the lubricated surfaces in bearings under the influence of weak electrical currents. Sci China Technol Sci 56(12): 2979–2987 (2013)
Crossref Google Scholar
[27]
Chiou Y C, Lee R T, Lin C M. Formation criterion and mechanism of electrical pitting on the lubricated surface under AC electric field. Wear 236(1–2): 62–72 (1999)
Crossref Google Scholar
[28]
Raadnui S, Kleesuwan S. Electrical pitting wear debris analysis of grease-lubricated rolling element bearings. Wear 271(9–10): 1707–1718 (2011)
Crossref Google Scholar
[29]
Har P. Investigation of damaged rolling-element bearings and deterioration of lubricants under the influence of electric fields. Wear 176(2): 151–161 (1994)
Crossref Google Scholar
[30]
Gonda A, Capan R, Bechev D, Sauer B. The influence of lubricant conductivity on bearing currents in the case of rolling bearing greases. Lubricants 7(12): 108 (2019)
Crossref Google Scholar
[31]
Cao Z F, Xia Y Q, Xi X. Nano-montmorillonite-doped lubricating grease exhibiting excellent insulating and tribological properties. Friction 5(2): 219–230 (2017)
Crossref Google Scholar
[32]
Suzumura J. Prevention of electrical pitting on rolling bearings by electrically conductive grease. QR RTRI 57(1): 42–47 (2016)
Crossref Google Scholar
[33]
DL/T 373-2019. Technical conditions of conductive paste. 2019.
[34]
US-ASTM. ASTM D2624-09. Standard test methods for electrical conductivity of aviation and distillate fuels. 2009.
[35]
Zhou Y, Han B, Pan Y, Chong H, Lu L, Li X, Bai Q, Liu, J. A tribological measuring method combining both electric impedance and optical interferometry film profile. Patent in process.
[36]
Chong H, Zhou Y X, Liu J J, Yang P, Han B, Li X M. Measurement of lubricating film thickness by combing electrical capacitance and optical interferometry method. Lubication Engineering 48(2):135–141(2022)
Google Scholar
[37]
Reddy A B, Shah F U, Leckner J, Rutland M, Glavatskih S. On electric conductivity of greases. Research Square Preprint (2022)
Crossref Google Scholar
[38]
Zhou Y X, Bosman R, Lugt P M. A master curve for the shear degradation of lubricating greases with a fibrous structure. Tribol Trans 62(1): 78–87 (2019)
Crossref Google Scholar
[39]
Cen H, Lugt P M, Morales-Espejel G. On the film thickness of grease-lubricated contacts at low speeds. Tribol Trans 57(4): 668–678 (2014)
Crossref Google Scholar
[40]
Maru M M, Tanaka D K. Consideration of stribeck diagram parameters in the investigation on wear and friction behavior in lubricated sliding. J Braz Soc Mech Sci & Eng 29(1) (2007)
Crossref Google Scholar
[41]
Foord C A, Hammann W C, Cameron A. Evaluation of lubricants using optical elastohydrodynamics. A S L E Trans 11(1): 31–43 (1968)
Crossref Google Scholar
[42]
Hamrock B J, Dowson D. Elastohydrodynamic lubrication of elliptical contacts for materials of low elastic modulus I—Fully flooded conjunction. J Lubr Technol 100(2): 236–245 (1978)
Crossref Google Scholar
[43]
Yang P R. Numerical Analysis of Fluid Lubrication. Beijing: National Defense Industry Press, 1998.
[44]
Jablonka K, Glovnea R, Bongaerts J. Evaluation of EHD films by electrical capacitance. J Phys D: Appl Phys 45(38): 385301 (2012)
Crossref Google Scholar
[45]
Gemeinder Y, Schuster M, Radnai B, Sauer B, Binder A. Calculation and validation of a bearing impedance model for ball bearings and the influence on EDM-currents. In: Proceedings of the International Conference on Electrical Machines (ICEM), Berlin, Germany, 2014: 1804–1810
Crossref Google Scholar
[46]
Mérieux J S, Hurley S, Lubrecht A A, Cann P M. Shear-degradation of grease and base oil availability in starved EHL lubrication. Tribol Ser 38: 581–588 (2000)
Crossref Google Scholar
[47]
Tischmacher H, Gattermann S. Investigations on bearing currents in converter-fed electrical motors. In: Proceedings of the International Conference on Electrical Machines, Marseille, France, 2012: 1764–1770
Crossref Google Scholar
[48]
Jablonka K, Glovnea R, Bongaerts J. Quantitative measurements of film thickness in a radially loaded deep-groove ball bearing. Tribol Int 119: 239–249 (2018)
Crossref Google Scholar
[49]
Anatoly Z, Steffen P, André H, Marcel N, Eckhard K. A comparison of an analytical and a numerical approach to calculate the electrical capacitance of rolling element bearings. In: Proceedings of the 4th International FVA-Conference, Würzburg, Germany, 2022: 8–15.
Google Scholar
Friction
Volume 12 Issue 4,
April 2024
Pages 683-697
DOI: 10.1007/s40544-023-0784-0
Cite this article:
ZHOU Y, LIU J, LI X, et al. On the electric behaviour of conductive grease inside the contact zone. Friction, 2024, 12(4): 683-697. https://doi.org/10.1007/s40544-023-0784-0

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Received: 14 February 2023
Revised: 04 May 2023
Accepted: 22 May 2023
Published: 24 January 2024
© The author(s) 2023.

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