Effect of lubricant extreme-pressure additives on surface fatigue life of AISI 9310 spur gears
Herbert W. Scibbe, Dennis P. Townsend, Paul R. Aron, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1984 - Technology & Engineering - 11 pages
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9310 spur gears AISI 9310 gears AISI 9310 spur AISI 9310 steel alkyl amine thiocynate antiwear additive argon Austenitize boundary lubrication carbon composition conformed to MIL-L-23699 corrosion inhibitors CVM AISI fatigue spall film thickness Four groups ft/min gear fatigue test Gear run gear teeth gear temperature gear tooth surfaces gearbox gears tested groups of gears Lewis Research Center load-carrying additive m/min maximum Hertz stress MIL-L-23699 specifications NASA II oil oil with 0.1 outlet temperature oxidation and corrosion oxygen phosphate phosphorous oil phosphorus EP additive Pitch diameter pitch-line velocity reference oil rich regions run in NASA secondary electron SED image shaft shown in figure spot mode sputtering rate statistically significant stress of 1.71 sulfur EP additive surface of gear surface reactive additives synthetic tetraester oil temperature of 344 Test conditions test gears test rig tetraester based oil tetraester reference torque velocity of 2800 viscosity