Contribution of Phosphorus to the Antiwear Performance of Zinc Dialkyldithiophosphates
作者： Fred Rounds
DOI: 10.1080/05698198508981645
关键词: Metal 、 Branching (polymer chemistry) 、 Zinc 、 Lubrication 、 Chemistry 、 Sulfur 、 Inorganic chemistry 、 Base oil 、 Atomic ratio 、 Low load
摘要: Four-ball wear studies show that the antiwear (low load) performance of zinc dialkyldithiophosphates (ZDPs) can be duplicated by combining a dialkyl acid phosphate and soluble compound. Antiwear phosphates was independent chain length for C8 to C18 but affected branching ring substitution. Zinc compound effectiveness depended on strength parent compared phosphate, its concentration in blend (an atomic ratio 2P:1Zn being optimum). most desirable metal naphthenate tested. Base oil viscosity had little effect additive effectiveness. Added possible inorganic ZDP reaction products exhibited no activity. At higher loads EP regime, ZDPs lose their effectiveness, whereas both sulfur compounds reduce wear. Presented as an American Society Lubrication Engineers paper at ASME/ASLE Conference San Diego, California October 22–24, 1984
sci-hub.se 参考文章(25)
Donald J. Smolenski, Richard H. Kabel, Effect of Engine Oil Zinc Dithiophosphate (ZDP) Additive Type on Cam and Lifter Wear in Taxi Service 1983 SAE International Fall Fuels and Lubricants Meeting and Exhibition. ,(1983) , 10.4271/831760
J.M. Georges, J.M. Martin, T. Mathia, Ph. Kapsa, G. Meille, H. Montes, Mechanism of boundary lubrication with zinc dithiophosphate Wear. ,vol. 53, pp. 9- 34 ,(1979) , 10.1016/0043-1648(79)90212-6
F. T. Barcroft, S. G. Daniel, The Action of Neutral Organic Phosphates as EP Additives Journal of Basic Engineering. ,vol. 87, pp. 761- 767 ,(1965) , 10.1115/1.3650676
H. E. Bieber, E. E. Klaus, E. J. Tewksbury, A Study of Tricresyl Phosphate as an Additive for Boundary Lubrication Tribology Transactions. ,vol. 11, pp. 155- 161 ,(1968) , 10.1080/05698196808972218
E. S. Forbes, K. G. Allum, H. B. Silver, Load-Carrying Properties of Metal Dialkyl Dithiophosphates: Application of Electron Probe Microanalysis Proceedings of the Institution of Mechanical Engineers, Conference Proceedings. ,vol. 183, pp. 35- 49 ,(1968) , 10.1243/PIME_CONF_1968_183_277_02
Fred G. Rounds, Some Factors Affecting the Decomposition of Three Commercial Zinc Organodithiophosphates Tribology Transactions. ,vol. 18, pp. 79- 89 ,(1975) , 10.1080/05698197508982749
R. B. Jones, R. C. Coy, The Chemistry of the Thermal Degradation of Zinc Dialkyldithiophosphate Additives Tribology Transactions. ,vol. 24, pp. 91- 97 ,(1981) , 10.1080/05698198108983001
H. Spedding, R.C. Watkins, The antiwear mechanism of zddp's. Part I Tribology International. ,vol. 15, pp. 13- 15 ,(1982) , 10.1016/0301-679X(82)90101-3
R.C. Watkins, The use of the hertzian dimension in wear scar analyses (application to four-ball results) Wear. ,vol. 91, pp. 349- 354 ,(1983) , 10.1016/0043-1648(83)90078-9
Ina Sieber, Klaus Meyer, Heinz Kloss, Andreas Schöpke, Characterization of boundary layers formed by different metal dithiophosphates in a four-ball machine Wear. ,vol. 85, pp. 43- 56 ,(1983) , 10.1016/0043-1648(83)90334-4