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�������պ����ѧѧ�� 2003, Vol. 29 Issue (3) :225-228    DOI:
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Effect of Atomic Oxygen on Leakage Rate of O��Ring
Shao Xinjie, Zhang Jianbin, Zhang Yuan*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics

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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.
Keywords�� silicone rubber   oxygen atoms   leakage   O-ring     
Received 2001-09-28;


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���½�, �Ž���, ���.ԭ������O��Ȧй©�ʵ�Ӱ��[J]  �������պ����ѧѧ��, 2003,V29(3): 225-228
Shao Xinjie, Zhang Jianbin, Zhang Yuan.Effect of Atomic Oxygen on Leakage Rate of O��Ring[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2003,V29(3): 225-228
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