Research article

Effects of atomic oxygen irradiation on structural and tribological properties of polyimide/Al2O3 composites

  1. Baixing Liu1,2,
  2. Xianqiang Pei1,
  3. Qihua Wang1,*,
  4. Xiaojun Sun1,
  5. Tingmei Wang1

Article first published online: 16 AUG 2011

DOI: 10.1002/sia.3814

Issue

Surface and Interface Analysis

Surface and Interface Analysis

Volume 44, Issue 3, pages 372–376, March 2012

Additional Information

How to Cite

Liu, B., Pei, X., Wang, Q., Sun, X. and Wang, T. (2012), Effects of atomic oxygen irradiation on structural and tribological properties of polyimide/Al2O3 composites. Surf. Interface Anal., 44: 372–376. doi: 10.1002/sia.3814

Author Information

  1. 1

    State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

  2. 2

    Graduate School, Chinese Academy of Sciences, Beijing, China

*Qihua Wang, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
E-mail: wangqh@lzb.ac.cn

Publication History

  1. Issue published online: 7 FEB 2012
  2. Article first published online: 16 AUG 2011
  3. Manuscript Accepted: 18 JUN 2011
  4. Manuscript Revised: 17 JUN 2011
  5. Manuscript Received: 14 MAR 2011

Funded by

  • National Science Foundation for Distinguished Young Scholars of China. Grant Number: 51025517
  • Innovative Group Foundation of NSFC. Grant Number: 50721062
  • National 973 Project of China. Grant Number: 2007CB607606
  • National Natural Science Foundation of China. Grant Number: 50805139

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Keywords:

  • polymer composite;
  • AO irradiation;
  • oxidation;
  • degradation;
  • friction;
  • wear

To understand the effects of atomic oxygen (AO) irradiation on the structural and tribological behaviors of polymer composites, polyimide/Al2O3 composites were irradiated with AO in a ground-based simulation facility. The structural changes were characterized by X-ray photoelectron spectroscopy and attenuated total-reflection FTIR, whereas the tribological changes were evaluated by friction and wear tests as well as scanning electron microscopy analysis of the worn surfaces. It was found that AO irradiation induced the oxidation and degradation of polyimide molecular chains, which increased the O concentration and decreased the C concentration in the composite surfaces. The destruction action of AO changed the surface chemical structure and morphology of the samples. Friction and wear tests indicated that AO irradiation decreased the friction coefficient but increased the wear rate of both pure and Al2O3 filled polyimides. In terms of the tribological properties, appropriate content of Al2O3 might be favorable for the improvement of tribological properties in AO environment. Copyright © 2011 John Wiley & Sons, Ltd.

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