The Interaction of Distillate Fuels with Inorganic Zinc Coatings is Simulated Navy Fuel Tanks
Research and development rept.,
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD
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The results of an investigation into the compatibility of the new Navy Distillate-type fuel with inorganic zinc fuel-tank coatings are reported. Interaction between Navy Distillate fuel and the representative coatings used in the investigation was indicated by visible change in the coatings and by increased levels of zinc in the fuels. The concentration of zinc in a fuel was found to depend upon the acidity of the fuel and upon the length of contact between fuel and coating. Coatings which had been contacted by many batches of fuel were found to release less zinc to a fuel than did newly applied coatings. On the basis of the data obtained in this investigation, the maximum concentration of zinc that might be found in a fuel stored for a long time in a typical tank protected with an inorganic zinc coating is in the order of magnitude of 20 milligrams per 100 milliliters about 230 parts per million. It was concluded that the use of inorganic zinc coatings should be prohibited in Navy Distillate service.
- Coatings, Colorants and Finishes