EFFECT OF JP-5 SULFUR CONTENT AND SEA WATER INGESTION ON HOT GAS CORROSION OF SUPER ALLOYS
Progress rept. no. 3
PHILLIPS PETROLEUM CO BARTLESVILLE OK
Pagination or Media Count:
An experimental investigation was conducted to determine whether the maximum sulfur content of 0.4 weight per cent, currently allowed in grade JP-5 aviation turbine fuel, is a safe level for the protection of turbine blade alloys used in high performance engines. Specimens of two nickel-base alloys Inconel 713C and Sierra Metal 200 were exposed to vitiated air from the Phillips 2-inch combustor 56 air-fuel ratio at high temperature 2,000 degrees Fahrenheit, high pressure 15 atmospheres, and high velocity 500 feet per second during a five-hour cyclic test 55 minutes fuel-on and 5 minutes fuel- off. A statistically designed test program was used to evaluate the effect of three sulfur concentration levels in the fuel 0.0002, 0.040, and 0.40 weight per cent at three sea salt concentration levels in the air zero, 1.50, and 15. 0 parts per million, and also any sulfur x sea salt interaction. The significance of test specimen metal losses and changes in tensile properties was established by analyses of variance, made at a confidence level of 95 per cent.
- Physical Chemistry
- Properties of Metals and Alloys
- Jet and Gas Turbine Engines