Program to Evaluate the Effect of Sulfur in JP-5 Fuel on Hot Corrosion of Turbine Blade Materials.
Progress rept. no. 1, 16 May-16 Aug 70,
PHILLIPS PETROLEUM CO BARTLESVILLE OK RESEARCH AND DEVELOPMENT DEPT
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In previous tests, specimens of eight nickel-base superalloys and four cobalt-base superalloys, the eight nickel-base superalloys with an aluminum rich coating and all 12 superalloys with a coating rich in chromium and aluminum were exposed in the Phillips Turbine Simulator to hot gases from the Phillips 2-Inch Combustor. The test technique used with theTurbine Simulator reproduces the conditions of exposure gas temperature, pressure, velocity, and composition in the hot section of an aircraft-turbine engine operating in a marine environment. Using test fuels with 0.040 and 0.0004 weight per cent sulfur, significant effects were observed, on the basis of weight loss of test specimens, from a reduction in sulfur content with many of the test materials. Plans are detailed for an experimental investigation to complete the evaluation, using an intermediate level 0.0040 weight per cent of sulfur in fuel to determine whether the difference in hot corrosion is associated with a threshold concentration of fuel sulfur. While the experiment was designed to place primary emphasis on obtaining information on the effect of sulfur in fuel on hot corrosion of turbine blade materials in a marine environment, information will also be obtained to permit some comparisons of the relative durability of superalloys and superalloy-coating systems in a marine environment. Author
- Properties of Metals and Alloys
- Jet and Gas Turbine Engines