Accession Number:

AD0485554

Title:

EFFECT OF JP-5 SULFUR CONTENT ON HOT CORROSION OF SUPERALLOYS IN MARINE ENVIRONMENT.

Descriptive Note:

Progress rept. no. 3,

Corporate Author:

PHILLIPS PETROLEUM CO BARTLESVILLE OK RESEARCH DIV

Personal Author(s):

• Schirmer, R. M.
• Quigg, H. T.

Report Date:

1966-01-01

Pagination or Media Count:

173.0

Abstract:

An experimental investigation was conducted to determine whether the maximum sulfur content of 0.40 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. Four nickel-base alloys Udimet 500, Inco 713C, IN-100 and SM-200, one cobalt-base alloy WI-52 and one aluminum-diffusion coated alloy Misco MDC-1 on Inco 713C were exposed to vitiated air in Phillips hot corrosion test rig at high pressure 15 atmospheres and high velocity 565 to 805 ftsec during a five hour cyclic test. A statistically designed program was used to evaluate the effect of temperature 1400, 1600, 1800, 2000 and 2200 F, fuel sulfur 0.0002, 0.040 and 0.40 weight per cent and sea salt in air zero, 1.0 and 10.0 ppm. The significance of metal weight loss by test specimens was determined by analysis of variance, made at a confidence level of 95 per cent. The validity of metal weight loss data was established by metallographic examination of test specimens, which showed a correlation with depth of penetration and the absence of deep intercrystalline attack.

Descriptors:

• *CORROSION
• *SULFUR
• *HEAT RESISTANT ALLOYS
• *JET ENGINE FUELS
• NICKEL ALLOYS
• SEA WATER
• PENETRATION
• CHROMIUM ALLOYS
• COBALT ALLOYS
• OXIDES
• FILMS
• TEST METHODS
• TURBINE BLADES
• EXPERIMENTAL DATA
• PETROLEUM PRODUCTS
• ALUMINUM
• FLUID FLOW
• CLEANING
• TEMPERATURE
• STATISTICAL ANALYSIS
• STATISTICAL ANALYSIS

Subject Categories:

• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE