OXIDATION-CORROSION CHARACTERISTICS OF AIRCRAFT TURBINE ENGINE LUBRICANTS
Phase rept. 1 Feb-1 Sep 1965
SOUTHWEST RESEARCH INST SAN ANTONIO TX
Pagination or Media Count:
Oxidation-corrosion test data are presented for 46 lubricants, 40 MIL-L-7808 type lubricants and six MIL-L-23699 type lubricants, evaluated at one or more temperatures within the range of 350 to 400 F. In addition, the compatibility of selected lubricants when blended with lubricants of the same general class was evaluated. The test conditions which were varied were temperature and the use of reflux and nonreflux glassware configurations. Relatively milk oxidative degradation occurred at 350 and 375 F test conditions. Using an arbitrary rating point of 100 viscosity increase 100 F as the maximum viscosity increase allowable for satisfactory performance, 23 of the 37 lubricants evaluated at 385 F were satisfactory using the nonreflux test procedure. Sixteen of the 29 lubricants evaluated at 390 F were satisfactory and only four of the 16 evaluated at 400 F provided satisfactory performance. The effect of condensate return at 385 F revealed that the majority of lubricants evaluated were unaffected.
- Lubricants and Hydraulic Fluids