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Chinese Journal of Mechanical Engineering
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Dry friction and wear characteristics of impregnated graphite in a corrosive environment

Chinese Journal of Mechanical Engineering volume 27, pages 965–971 (2014)Cite this article

Abstract

Tribological properties of impregnated graphite are greatly influenced by preparation technology and working conditions and it’s highly susceptible to corrosion environmental impacts, but the experimental research about it are few. In this paper, three kinds of impregnated graphite samples are prepared with different degree of graphitization, the tribological properties of these samples in the dry friction environment and in a corrosive environment are analyzed and contrasted. The tribo-test results show that the friction coefficient of samples is reduced and the amount of wear of samples increase when the graphitization degree of samples increases in dry friction condition. While in a corrosive environment (samples are soaked N2O4), the friction coefficient and amount of wear are changed little if the graphitization degree of samples are low. If the degree of graphitization increase, the friction coefficient and amount of wear of samples increase too, the amount of wear is 2 to 3 times as the samples tested in the non-corrosive environment under pv value of 30 MPa · m/s. The impregnated graphite, which friction coefficient is stable and graphitization degree is in mid level, such #2, is more appropriate to have a work in the corrosion conditions. In this paper, preparation and tribological properties especially in corrosive environment of the impregnated graphite is studied, the research conclusion can provide an experimental and theoretical basis for the selection and process improvement of graphite materials, and also provide some important design parameters for contact seal works in a corrosive environment.

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Authors and Affiliations

  1. Key Laboratory of Education Ministry for Modem Design and Rotor-bearing System, Xi’an Jiaotong University, Xi’an, 710049, China

    Qian Jia, Xiaoyang Yuan & Guangneng Dong

  2. School of Electromechanical Engineering, Xidian University, Xi’an, 710072, China

    Guoyuan Zhang

  3. Xi’an Aerospace Propulsion Institute, China Aerospace Science and Technology Corporation, Xi’an, 710100, China

    Weigang Zhao

Authors
  1. Qian Jia
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  2. Xiaoyang Yuan
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  3. Guoyuan Zhang
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  4. Guangneng Dong
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  5. Weigang Zhao
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Corresponding author

Correspondence to Qian Jia.

Additional information

Supported by National Natural Science Foundation of China (Grant No. 51175408)

JIA Qian, born in 1981, is currently a PhD candidate at Key Laboratory of Education Ministry for Modem Design and Rotor-bearing System, Xi’an Jiaotong University, China. He received his bachelor degree from Chang’an University, China, in 2004. His research interests include mechanical design and tribology.

YUAN Xiaoyang, born in 1963, is currently a professor and a PhD candidate supervisor at engineer at Xi’an Jiaotong University, China. His research interests include mechanical design and tribology.

ZHANG Guoyuan, born in 1979, is currently an associate professor at School of Electromechanical Engineering, Xidian University, China. His research interests include mechanical kinetics and tribology.

DONG Guangneng, born in 1965, is currently a professor and a PhD candidate supervisor at Xi’an Jiaotong University, China. His research interests include mechanical design and tribology.

ZHAO Weigang, born in 1977, is currently a senior engineer at Xi’an Aerospace Propulsion Institute, China Aerospace Science and Technology Corporation, China.

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Jia, Q., Yuan, X., Zhang, G. et al. Dry friction and wear characteristics of impregnated graphite in a corrosive environment. Chin. J. Mech. Eng. 27, 965–971 (2014). https://doi.org/10.3901/CJME.2014.0616.111

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  • DOI: https://doi.org/10.3901/CJME.2014.0616.111

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