Solid deposition from JP-8 fuel, at temperatures of 500°C and above, was evaluated for nickel, copper, 304 stainless steel, 316 stainless steel, glass-lined stainless steel, and SilcoNert™ 1000 (Silcosteel®) treated stainless steel tubing.

• Deposition was greatest in the nickel, 316 stainless steel, and 304 stainless steel, respectively.
• Copper, Silcosteel® treated stainless steel, and glass-lined stainless steel tubing exhibited notably smaller amounts of deposits.

The investigators attribute an active and varying role in solid deposition to surface catalysts on metal tubing, and propose that an inert coating on the metal surface inhibits solid deposition from reactions catalyzed by metal surfaces under thermal stress.

Authors:

O. Altin, A. Venkataraman, S. Eser (Fuel Science Program / Department of Materials Science and Engineering; Energy Institute / College of Earth and Mineral Sciences, The Pennsylvania State University)