Topography and nanomechanical properties of tribochemical films derived from zinc dialkyl and diaryl dithiophosphates
作者： J.F. Graham , C. McCague , P.R. Norton
关键词:
摘要: In this paper we present recent results from an on‐going effort to characterize the nanomechanical properties of a variety tribochemical, antiwear films through use modern scanning probe techniques. The two types wear studied, derived zinc dialkyl dithiophosphate (alkyl ZDDP) and diaryl (aryl ZDDP), were chosen because they possess significantly different characteristics. High resolution AFM topographic images showed significant differences between films. More interestingly, high imaging quantitative mechanical testing using interfacial force microscope (IFM), revealed elastic plastic films; in addition each type film possessed several distinct regions with respect properties. maximum values for modulus hardness located on highly loaded alkyl ZDDP which exhibited best tribological performance. contrast, aryl films, poorer behaviour, devoid such resilient regions. Our correlate macroscopic behavior tribochemical nanometer scale.
springer.com
sci-hub.se 参考文章(29)
O.L. Warren, J.F. Graham, P.R. Norton, J.E. Houston, T.A. Michalske, Nanomechanical properties of films derived from zinc dialkyldithiophosphate Tribology Letters. ,vol. 4, pp. 189- 198 ,(1998) , 10.1023/A:1019194903262
J.M. Georges, Colloidal Behavior of Films in Boundary Lubrication Tribology and Interface Engineering Series. ,vol. 7, pp. 729- 761 ,(1981) , 10.1016/S0167-8922(08)70918-0
S. G. Corcoran, R. J. Colton, E. T. Lilleodden, W. W. Gerberich, Anomalous plastic deformation at surfaces: Nanoindentation of gold single crystals Physical Review B. ,vol. 55, ,(1997) , 10.1103/PHYSREVB.55.R16057
H. So, Y.C. Lin, Gibbs G.S. Huang, Terny S.T. Chang, Antiwear mechanism of zinc dialkyl dithiophosphates added to a paraffinic oil in the boundary lubrication condition Wear. ,vol. 166, pp. 17- 26 ,(1993) , 10.1016/0043-1648(93)90274-P
R. C. Coy, R. B. Jones, The Thermal Degradation and EP Performance of Zinc Dialkyldithiophosphate Additives in White Oil Tribology Transactions. ,vol. 24, pp. 77- 90 ,(1981) , 10.1080/05698198108983000
P.A. Willermet, D.P. Dailey, R.O. Carter, P.J. Schmitz, W. Zhu, Mechanism of formation of antiwear films from zinc dialkyldithiophosphates Tribology International. ,vol. 28, pp. 177- 187 ,(1995) , 10.1016/0301-679X(95)98965-G
Zhanfeng Yin, Masoud Kasrai, G.Michael Bancroft, Kim F. Laycock, Kim H. Tan, Chemical characterization of antiwear films generated on steel by zinc dialkyl dithiophosphate using X-ray absorption spectroscopy Tribology International. ,vol. 26, pp. 383- 388 ,(1993) , 10.1016/0301-679X(93)90076-D
J. J. Habeeb, W. H. Stover, The role of hydroperoxides in engine wear and the effect of zinc dialkyldithiophosphates Tribology Transactions. ,vol. 30, pp. 419- 426 ,(1986) , 10.1080/05698198708981775
R. C. Thomas, J. E. Houston, T. A. Michalske, R. M. Crooks, The Mechanical Response of Gold Substrates Passivated by Self-Assembling Monolayer Films Science. ,vol. 259, pp. 1883- 1885 ,(1993) , 10.1126/SCIENCE.259.5103.1883
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