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 Air Propulsion AISI 9310 gears AISI 9310 spur antiwear additive argon Austenitize boundary film Boundary Lubrication carbon composition corrosion inhibitors CVM AISI Effect of Lubricant fatigue spall film thickness Four groups ft/min 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 metal passivation MIL-L-23699 specifications NASA IV oil outlet temperature oxidation and corrosion oxidation inhibitor oxygen phosphorous oil phosphorus EP additive Pitch diameter pitch-line velocity reference oil Rolling-Element Fatigue run in NASA shown in figure spot mode sputtering rate statistically significant stress of 1.71 sulfur EP additive Surface fatigue surface films surface of gear surface pitting surface reactive additives synthetic tetraester oil Test conditions test gears test rig tetraester based oil torque Tricresyl Phosphate velocity of 2800 viscosity wt 7o wt o sulfur