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Laboratory Thermal Oxidation Study on Axle/Gear Lubricants
Technical Paper
2006-01-3269
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The oxidation process and mechanism of an 80W-90 axle/gear oil was studied using the laboratory modified Universal Oxidation Test (ASTM D4871). It provides useful information to better understand the oxidation behavior of a typical sulfur-phosphorus based GL-5 gear lubricant. Most importantly, the laboratory bench test provides helpful information regarding how hot is hot for the axle temperatures likely encountered during the actual field-trial driving. The testing result shows that the temperature of an axle lubricant is a decisive factor during the oxidation process. At the temperatures higher than 163°C, the viscosity and TAN increase very rapidly within a short period of time. The single FT-IR absorbance at 1715 cm-1 provides helpful complementary information to the oxidation process of the axle lubricants. The general trend of FT-IR agrees with both the viscosity change and TAN change of oxidized axle/gear lubricant.
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Citation
Gao, H., "Laboratory Thermal Oxidation Study on Axle/Gear Lubricants," SAE Technical Paper 2006-01-3269, 2006, https://doi.org/10.4271/2006-01-3269.Also In
References
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