Current Directions in Biomedical Engineering (Sep 2015)

Evaluation of adhesion promoters for Parylene C on gold metallization

  • Radun V.,
  • von Metzen R. P.,
  • Stieglitz T.,
  • Bucher V.,
  • Stett A.

DOI
https://doi.org/10.1515/cdbme-2015-0118
Journal volume & issue
Vol. 1, no. 1
pp. 493 – 497

Abstract

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Delamination of thin film polymeric coatings from metallization layers is a common cause of failure in biomedical implants. To address the problem, different adhesion promotion techniques can be applied which include surface pre-treatment with oxygen and argon plasma and the use of different adhesion promoters. In this paper the applicability of titanium (Ti), silicon oxide (SiOx), diamond-like carbon (DLC), tetramethylsilane (TMS) and aluminium oxide (AlOx) as adhesion promoters is evaluated. A cross cut, peel and scratch test are used to qualify and quantify the adhesion before and after storage in phosphate buffered saline (PBS) for 48 hours at a temperature of 37 °C. Promising results could be achieved by a combination of Ti and DLC as well as by AlOx.

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