Additive Chemistry Testing Methods
Synonyms
Definition
Additive and lubricant tests are designed to measure (1) wear and surface damage prevention, (2) deposit control, (3) sludge control, (4) friction control, (5) lubricant degradation, (6) contaminant effects on lubricant performance, and (7) lubricant rheology. These tests can be simple laboratory tests or complex rig/engine and fleet tests. The cost and time involved in these different tests requires that prudent selection of the lubricants being tested be considered when developing additives and lubricants.
Scientific Fundamentals
The testing of lubricant additive chemistry is closely related to the testing of fully formulated lubricants. While additives can be tested by themselves, most additives only improve one or two aspects of the performance properties required of a fully formulated lubricant. For example, an additive designed to prevent wear may have no effect on the ability of the lubricant to be...
References
- M.T. Devlin, H. Ryan, V. Tsang, P. Corbett, L. Strand, T.L. Turner, C. Wallo, T.-C. Jao, The effect of water contamination and oxidation on the fatigue life performance of wind turbine lubricants. Presented at the NLGI 70th Annual Meeting. Hilton Head, SC, 2003Google Scholar
- R.F. Haycock, J.E. Hillier, A.J. Caines, Automotive Lubricants Reference Book, 2nd edn. (SAE International, Warrendale, 2004)Google Scholar
- T-C. Jao, M.T. Devlin, J. Milner, R. Iyer, M.R. Hoeprich, Influence of surface roughness on gear pitting behavior. Gear Technol. (May/June 2006), pp. 30–38Google Scholar
- R.H. Myers, D.C. Montgomery, Response Surface Methodology: Process and Product Optimization Using Designed Experiments (Wiley, New York, 1995)MATHGoogle Scholar
- L.R. Rudnick, Testing methods for additive/lubricant performance, in Lubricant Additives: Chemistry and Applications, ed. by L.R. Rudnick, 2nd edn. (CRC Press, Boca Raton, 2008), p. 669Google Scholar
- A.W. Ruff, in Laboratory Characterization Techniques, Friction, Lubrication, and Wear Technology, ASM Handbook, ed. by P.J. Blau, S.D. Henry, vol. 18 (ASM International, Materials Park, Ohio, 1992), p. 333Google Scholar