Testing the permeability and corrosion resistance of micro-mechanically interlocked joints

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  • Jeppe Byskov-Nielsen, Denmark
  • Allan Hjarbæk Holm, Denmark
  • Rune Højsholt, Risø National Laboratory for Sustainable Energy, Denmark
  • Pedro Sá
  • ,
  • Peter Balling
  • Interdisciplinary Nanoscience Center
  • Department of Physics and Astronomy
Micro-mechanical interlocking (MMI) can be applied to create new and interesting composite materials. We have employed laser structuring to achieve MMI between stainless steel and plastic with extremely high joint strength. However, the water permeability and corrosion resistance of the joint must be examined. For many industrially relevant applications it is important to keep water away from certain parts and to prevent the sample from corroding. A thorough study of the permeability of the interconnected samples at different temperatures and after employing different laserstructuring techniques is conducted. The permeability seems to be consistent with the Hagen–Poiseuille equation independent of the laser structuring technique and is orders of magnitudes larger than the diffusion rate through the plastic. Two different types of corrosion tests have been undertaken, and we show that care must be taken in order not to degrade the corrosion resistance of the sample to an unacceptable level.
Original languageEnglish
JournalApplied Physics A: Materials Science & Processing
Issue104
Pages (from-to)975-979
ISSN0947-8396
DOIs
Publication statusPublished - 2011

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