The evaluation of the corrosion resistance of metallic substrates protected by a hydrophobic coating
- Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering
In order to ascertain the performance of hydrophobic materials in corrosion service, metallic substrates of aluminum, copper, and steel were coated with a hydrophobic coating termed conformal and subjected to a variety of intensive analytical examinations including Electrochemical Impedance Spectroscopy, real-time field studies, and scanning electron microscopy. To be able to gage the relative performance of the conformal coat, it was necessary to test similar uncoated metallic substrates as well as similar substrates treated with a non-hydrophobic corrosion preventative coat. This allowed direct comparisons to be made between the conformal coat and other commercially available coating products while allowing for an uncoated substrate to act as a baseline reference (i.e., a control). The results of these experiments show that the performance of conformal as a preventative measure against corrosion were below expectations, especially in comparison to other commercially available non-hydrophobic coatings. This is most likely due to inadequate adhesion at the polymer-metal substrate interface. Preliminary results show that significant improvements in corrosion resistance occur through the use of a base coating though the cause for this improvement cannot be determined at this time.
- OSTI ID:
- 382575
- Report Number(s):
- CONF-960389-; TRN: IM9645%%126
- Resource Relation:
- Conference: National Association of Corrosion Engineers (NACE) annual corrosion conference and exposition: water and waste water industries, Denver, CO (United States), 24-29 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of Corrosion/96 conference papers; PB: [6615] p.
- Country of Publication:
- United States
- Language:
- English
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