[1] Ding Hongqin, Jiang Shuyun,. Comparative study on tribological properties of isostatic graphiteand carbon graphite under dry sliding and water-lubricated conditions [J]. Journal of Southeast University (English Edition), 2020, 36 (3): 273-277. [doi:10.3969/j.issn.1003-7985.2020.03.004]

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Comparative study on tribological properties of isostatic graphiteand carbon graphite under dry sliding and water-lubricated conditions()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

36

Issue:

2020 03

Page:

273-277

Research Field:

Mechanical Engineering

Publishing date:

2020-09-20

Info

Title:

Comparative study on tribological properties of isostatic graphiteand carbon graphite under dry sliding and water-lubricated conditions

Author(s):

Ding Hongqin;  Jiang Shuyun

School of Mechanical Engineering, Southeast University, Nanjing 211189, China

Keywords:

isostatic graphite;  carbon graphite;  friction and wear;  water lubrication;  dry sliding

PACS:

TH117

DOI:

10.3969/j.issn.1003-7985.2020.03.004

Abstract:

The tribological properties of isostatic graphite and carbon graphite under dry sliding and water lubricated conditions were studied. The friction test was conducted by using a pin-on-disc tribometer. The friction coefficient and the wear rate were employed to evaluate the tribological performances of the two materials, and wear morphology was used to analyze the wear mechanism. The results show that the friction coefficient of the isostatic graphite is larger than that of the carbon graphite under the dry sliding condition, and the wear rate is lower than that of the carbon graphite. Under the water lubricated condition, the friction coefficients and the wear rates of the isostatic graphite decrease obviously. The main wear form of the isostatic graphite is abrasive wear, while the main wear form of the carbon graphite is spalling wear. Finally, the tribological mechanism of the isostatic graphite under dry sliding and water lubricated conditions were systematically analyzed.

References:

[1] Zhang G Y, Yuan X Y, Dong G N. The tribological behavior of Ni-Cu-Ag-based PVD coatings for hybrid bearings under different lubrication conditions[J]. Tribology International, 2010, 43(1/2): 197-201. DOI:10.1016/j.triboint.2009.05.032.
[2] Durazo-Cardenas I S, Corbett J, Stephenson D J. The performance of a porous ceramic hydrostatic journal bearing[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2010, 224(1): 81-89. DOI:10.1243/13506501jet570.
[3] Cabrera D L, Woolley N H, Allanson D R, et al. Film pressure distribution in water-lubricated rubber journal bearings[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2005, 219(2): 125-132. DOI:10.1243/135065005x9754.
[4] Kuang F M, Zhou X C, Huang J, et al. Tribological properties of nitrile rubber/UHMWPE/nano-MoS₂ water-lubricated bearing material under low speed and heavy duty[J]. Journal of Tribology, 2018, 140(6): 061301. DOI:10.1115/1.4039930.
[5] Zhang R J, Wu Z D, Zhang H. Test investigation on water-lubricated journal bearing with silicified graphite layer for the pump-motor in nuclear plant [J]. Energy Conservation Technology, 2003, 21: 22-23. DOI:10.3969/j.issn.1002-6339.2003.03.010. (in Chinese)
[6] Zhang F, Li Y Z, Jia Q, et al. Preparation and properties of graphite bearings lubricated with water for nuclear main pump [C]//The Eleventh National Tribology Congress in China. Lan Zhou, China, 2014:1-5.(in Chinese)
[7] LiM Q, Wang W G, Li C X, et al. Study on wear debris in water lubricated thrust bearing of nuclear main pump after rig test[J]. Lubrication Engineering, 2016, 41(9): 113-120. DOI:10.3969/j.issn.0254-0150.2016.09.021. (in Chinese)
[8] Wang X R, Zhang X, Yang L H, et al. Research on friction and wear properties of water-lubricated graphite thrust bearings and their mechanisms [J]. Journal of Jiamusi University(Natural Science Edition), 2017, 35: 788-791. DOI:10.3969/j.issn.1008-1402.2017.05.022. (in Chinese)
[9] Wang X R, Wang P, Wang D, et al. Design of main pump motor’s water lubricated bearing and research on its lubricating performances [J]. Journal of Jiamusi University(Natural Science Edition), 2012, 30: 559-562. DOI:10.3969/j.issn.1008-1402.2012.04.021. (in Chinese)
[10] Jones G A. On the tribological behaviour of mechanical seal face materials in dry line contact: Part I. Mechanical carbon[J]. Wear, 2004, 256(3/4): 415-432. DOI:10.1016/S0043-1648(03)00539-8.
[11] Williams J A, Morris J H, Ball A. The effect of transfer layers on the surface contact and wear of carbon-graphite materials[J]. Tribology International, 1997, 30(9): 663-676. DOI:10.1016/S0301-679X(97)00034-0.
[12] Batchelor A W, Lam L N, Chandrasekaran M. Lubrication of stellite at ambient and elevated temperatures by transfer films from a graphite slider[J]. Wear, 1996, 198(1/2): 208-215. DOI:10.1016/0043-1648(96)06967-0.
[13] Salavati H, Alizadeh Y, Ayatollahi M R. Fracture assessment of inclined double keyhole notches in isostatic graphite[J]. Physical Mesomechanics, 2018, 21(2): 110-116. DOI:10.1134/S1029959918020030.
[14] Torabi A R. Sudden fracture from U-notches in fine-grained isostatic graphite under mixed mode Ⅰ/Ⅱ loading[J]. International Journal of Fracture, 2013, 181(2): 309-316. DOI:10.1007/s10704-013-9832-5.
[15] Berto F, Lazzarin P, Ayatollahi M R. Brittle fracture of sharp and blunt V-notches in isostatic graphite under torsion loading[J]. Carbon, 2012, 50(5): 1942-1952. DOI:10.1016/j.carbon.2011.12.045.
[16] Berto F, Lazzarin P, Ayatollahi M R. Brittle fracture of sharp and blunt V-notches in isostatic graphite under pure compression loading[J]. Carbon, 2013, 63: 101-116. DOI:10.1016/j.carbon.2013.06.045.
[17] Lazzarin P, Berto F, Ayatollahi M R. Brittle failure of inclined key-hole notches in isostatic graphite under in-plane mixed mode loading[J]. Fatigue & Fracture of Engineering Materials & Structures, 2013, 36(9): 942-955. DOI:10.1111/ffe.12057.
[18] Berto F, Lazzarin P, Marangon C. Brittle fracture of U-notched graphite plates under mixed mode loading[J]. Materials & Design, 2012, 41: 421-432. DOI:10.1016/j.matdes.2012.05.022.

Memo

Memo:

Biographies: Ding Hongqin(1986—), male, doctor; Jiang Shuyun(corresponding author), male, doctor, professor, jiangshy@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51635004, 11472078).
Citation: Ding Hongqin, Jiang Shuyun.Comparative study on tribological properties of isostatic graphite and carbon graphite under dry sliding and water-lubricated conditions[J].Journal of Southeast University(English Edition), 2020, 36(3):273-277.DOI:10.3969/j.issn.1003-7985.2020.03.004.

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