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Volume 29 Issue 3
Mar.  2003
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Journal of Beijing University of Aeronautics and Astronautics  > 2003  >  29(3): 225-228.
Shao Xinjie, Zhang Jianbin, Zhang Yuanet al. Effect of Atomic Oxygen on Leakage Rate of ORing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(3): 225-228. (in Chinese)
Citation: Shao Xinjie, Zhang Jianbin, Zhang Yuanet al. Effect of Atomic Oxygen on Leakage Rate of ORing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(3): 225-228. (in Chinese)
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Effect of Atomic Oxygen on Leakage Rate of ORing

  • School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics

  • Received Date: 28 Sep 2001
  • Publish Date: 31 Mar 2003
    Abstract
  • Experiments were conducted with an IFM ground equipment to investigate the effect of atomic oxygen on silicone rubber O-rings. By measuring the pressure between two O-rings, leakage rates between the two O-rings before and after exposure to atomic oxygen were compared. In addition, the surface characteristics of O-ring were analyzed by scanning electron microscope. All experiments provethat atomic oxygen erodes the surface of O-ring seriously, resulting in a weight loss and a weakened sealing capacity of the O-ring. The results show that the surface damage, the weight loss and the leakage rate of an O-ring all increase in proportion to its of the time exposed to atomic oxygen.

     

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