[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(
)
干摩擦和水润滑条件下等静压石墨和碳石墨摩擦学 性能的对比研究
)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
- 干摩擦和水润滑条件下等静压石墨和碳石墨摩擦学 性能的对比研究
- Author(s):
- Ding Hongqin; Jiang Shuyun
- School of Mechanical Engineering, Southeast University, Nanjing 211189, China
- 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.
- 研究了等静压石墨和碳石墨在干摩擦和水润滑条件下的摩擦学性能.采用销-盘摩擦磨损试验机进行等静压石墨和碳石墨的摩擦学实验.通过摩擦系数和磨损率来评估两类材料的摩擦学性能, 通过磨损形貌来分析其磨损机理.实验结果表明, 在干摩擦条件下, 等静压石墨的摩擦系数大于碳石墨的摩擦系数, 而等静压石墨的磨损率低于碳石墨的磨损率.在水润滑条件下, 等静压石墨的摩擦系数和磨损率明显降低.等静压石墨的磨损形式主要是磨粒磨损, 碳石墨的磨损形式主要是剥落磨损.最后, 系统地分析了等静压石墨在干摩擦和水润滑条件下的磨损机理.
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.