Accession Number:

ADA106127

Title:

Corrosion Inhibiting Engine Oils

Descriptive Note:

Final interim rept. 4 Sep 1979-1 Dec 1980

Corporate Author:

PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT PRODUCTS DIV

Personal Author(s):

• Brown, G. C.
• Meehan, R. J.
• Warner, P. A.

Report Date:

1981-08-01

Pagination or Media Count:

73.0

Abstract:

The Fluids, Lubricants, and Elastomers Branch of the Materials Laboratory, AFWAL, established the requirements for a MIL-L-7808H operational oil with corrosion inhibition characteristics at least equal to those of MIL-C- 8188C. The new oil formulation is to provide corrosion inhibition under long- term storage conditions of the ALCM F107 turbine engine. During the initial fifteen-month effort, several approaches were evaluated as candidate methods for determining the effectiveness of corrosion inhibiting oil additives. A screening procedure was developed after preliminary modifications were made to the Corrosion Rate Evaluation Procedure CREP. Using the CREP together with compatibility and miscibility screening of oilinhibitor blends, a total of 67 candidate corrosion inhibitors CCI were evaluated. These included CCI obtained from Bray Oil Company, El Monte, California, as part of a subcontract to synthesize candidate corrosion inhibitors. Additional tests were completed on a preliminary physical and chemical property evaluation of the oilinhibitor blends in regard to MIL-L-7808H and MIL-C-8188C specifications.

Descriptors:

• *LUBRICANT ADDITIVES
• *AIRCRAFT ENGINE OILS
• *GAS TURBINES
• *CORROSION INHIBITION
• OPERATIONAL EFFECTIVENESS
• OXIDATION
• SULFONATES
• GRAVIMETRIC ANALYSIS
• SOLUBILITY
• HUMIDITY
• ORGANIC ACIDS
• COMPATIBILITY
• FORMULATIONS
• SALT SPRAY TESTS
• TEST AND EVALUATION
• CORROSION

Subject Categories:

• Organic Chemistry
• Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE