Synergistic effect of diisopropyl phosphite and ashless organic ammonium phosphate salt additives on tribological properties of AISI 52100 steel/Al 2 O 3 ceramics

Abstract

The friction-reducing and antiwear effects of the 500SN base oil containing diisopropyl phosphite (T451) and ashless organic ammonium phosphate salt (KT139) on AISI 52100 steel/Al₂O₃ ceramic were investigated with a ball-on-disc tribometer at a light load of 200 N and a high load of 400 N. The results indicate that the 500SN base oil containing T451 and KT139 appears with a synergistic effect on AISI 52100 steel/Al₂O₃ ceramic. Under a single additive, increasing percentage of T451 or KT139 can decrease the friction coefficient and the wear rate of the pair monotonously. However, under the compound system, the tribological behaviour of the pair is strongly dependent of the concentrations of additives. Within the experimental data, the most effective compositions for the loads 200 and 400 N are 2 wt%T451 + 2 wt%KT139 and 1 wt%T451 + 3 wt%KT139, respectively. The scanning electron microscopic images showed that plowed grooves, spalling, and corrosion are the dominant wear modes for the pair. The energy dispersive spectroscopy analysis shows that a protective tribochemical film containing both S and P forms on the steel ball worn surface. Nevertheless, the atom concentrations of P and S are too low to be referred for further analysis of the tribochemical reaction mechanism.

Keywords

steel ceramics additive interaction wear mechanisms

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References

Hwang

D. H.

Zum Gahr

K. H.

–Tribological behavior of steel–alumina sliding pairs under boundary lubrication conditions. Tribotest J., 2003, 9. 209–217.

Demizu

Wadabayashi

Ishigaki

–Dry friction of oxide ceramics against metals: the effect of humidity. Tribol. Trans., 1990, 33(4), 505–510.

Zhao

X. Zh.

Liu

J. J.

Zhu

B. L.

–Wear properties of TiC(N)-Al₂O₃ composite ceramics/stainless steel pair under dry and lubricated conditions. Tribology, 1998, 1. 7–12.

Pang

Y. X.

Guo

Y. J.

Liu

H. C.

–Study of friction and wear behaviors of Al₂O₃ matrix ceramic in various conditions. Lubr. Eng., 2001, 1. 32–33.

Fang

Gao

Zhou

–Effect of lubricants on the friction and wear of A1₂O₃ against gray cast iron. Wear, 1997, 210. 145–150.

Ravikiran

Bai

B. N. P.

–Water lubricated sliding of Al₂O₃ against steel. Wear, 1994, 171. 33–39.

Demizu

Ishigaki

Kawamoto

–The effect of trialkyl phosphites and other oil additives on the boundary friction of oxide ceramics against themselves and metals. Tribol. Int., 1997, 30(9), 651–657.

W. T.

Duda

J. L.

Klaus

E. E.

–Lubrication studies with alumina-on-alumina, steel-on-steel, and steel-on-alumina bearing systems. J. Am. Ceram. Soc., 1990, 73(8), 2247–2254.

Studt

–Influence of lubricating oil additives on friction of ceramics under conditions of boundary lubrication. Wear, 1987, 115. 185–191.

10.

Jianjun

Qunji

–Effects of lubricating greases and additives on the friction and wear properties of ceramics. Wear, 1992, 157. 173–180.

11.

Komvopoulos

Pernama

S. A.

Yamaguchi

E. S.

Ryason

P. R.

–Friction reduction and antiwear capacity of engine oil blends containing zinc dialkyl dithiophosphate and molybdenum-complex additives. Tribol. Trans., 2006, 49. 151–165.

12.

Wang

H. L.

Zhu

–Study on the synergistic effect of benzotriazole with ZDDP and its application. Lubr. Eng., 1998, 4. 24–28.

13.

Qiao

Y. L.

B. Sh.

Liu

W. M.

Xue

Q. J.

–The synergistic effect of antifriction agent and antiwear additive in oil lubrication. Lubr. Eng., 1997, 2. 68–71.

14.

Bec

Tonck

Georges

J. M.

Roper

G. W.

–Synergistic effects of MoDTC and ZDTP on frictional behavior of tribofilms at the nanometer scale. Tribol. Lett., 2004, 4. 797–809.

15.

Gong

Q. Y.

L. G.

C. F.

–The synergistic effect between synthetic S-containing borate ester and tricresyl phosphate in rapeseed oil. Tribology, 2002, 5. 117–121.

16.

Sarin

Tuli

D. K.

–Additive-additive interactions: search for synergistic FM-EP-AW composition. Wear, 1994, 174. 93–102.

17.

Qiao

–Study on synergistic effect mechanism of some extreme pressure and antiwear additives in lubrication oil. Acta Petrolei Sin., 1997, 13. 33–38.

18.

Rudnick

L. R.

–Lubricant additives: chemistry and applications, 2003 (CRC Press (New York, 197–210.

19.

Jiang

S. Y.

–Tribological properties of T8 Steel against Al₂O₃ ceramics under the lubrication of 500SN oil containing various additives. Tribology, 2004, 24. 29–32.

20.

Jiang

S. Y.

–Tribological synergistic effect of T8 steel against Al₂O₃ ceramics under a compound additive. Chin. J. Mech. Eng., 2004, 40. 119–122.

21.

Jiang

S. Y.

Yang

S. F.

–Synergistic effect of diisopropyl phosphite and triphenyl thiophosphate additives on tribological properties of T8 steel/Al₂O₃ ceramics. Wear, 2010, 268. 777–783.

22.

Jiang

S. Y.

Xie

H. J.

–Tribological behaviour of plasma-spray TiO₂ coating against metallic bearing materials under oil lubrication. Proc. IMechE, Part J: J. Engineering Tribology, 2011, 225. 128–138.