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Research Papers: Technical Briefs

Studies on Lanthanum Complexes of 1-Aryl-2,5-Dithiohydrazodicarbonamides in Paraffin Oil as Extreme Pressure Lubrication Additives

[+] Author and Article Information
R. B. Rastogi

e-mail: rashmi.apc@itbhu.ac.in

D. Tiwary

Department of Applied Chemistry,
Indian Institute of Technology,
Banaras Hindu University,
Varanasi, 221005, India

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received September 1, 2012; final manuscript received May 28, 2013; published online July 3, 2013. Assoc. Editor: Hong Liang.

J. Tribol 135(4), 044502 (Jul 03, 2013) (6 pages) Paper No: TRIB-12-1143; doi: 10.1115/1.4024751 History: Received September 01, 2012; Revised May 28, 2013

Testing of lanthanum complexes of 1-aryl-2,5-dithiohydrazodicarbonamides of the formula LaL3 [LH=1-phenyl-2,5-dithiohydrazodicarbonamide(PhTHC), 1-methylphenyl-2,5-dithiohydrazodicarbon-amide(p-MePhTHC), 1-methoxyphenyl-2,5-dithiohydrazodicarbonamide(p-MeOPhTHC), 1-phenyl-2,5-dithiohydrazodicarbonamide(p-ClPhTHC)] for their application as extreme pressure lubrication (EPL) additives was performed on four ball tester using steel balls of 12.7 mm diameter and MoS2 as reference additive. The efficiency of the complexes has been evaluated using the tribological parameters, wear scar diameter, friction coefficient, initial seizure load, 2.5 s seizure delay load, weld load, mean Hertz load, flash temperature parameter and pressure wear index. The tested complexes behave as good extreme pressure additives; however, the best performance is shown by the p-methoxyphenyl derivative. The surface morphology of the wear scar on steel ball has been studied by atomic force microscopy and scanning electron microscopy. In presence of this complex, roughness of the worn surface is significantly reduced. The composition of wear scar has been analyzed by energy dispersive X-ray spectroscopy. The presence of lanthanum and sulfur in energy dispersive X-ray spectrum emphasizes role of additive in the tribofilm formed on the surface.

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References

Shah, F. U., 2009, “Boron Compounds as Additives to Lubricants: Synthesis, Characterization and Tribological Optimization,” Ph.D. thesis, Luleå University of Technology, ETH, Zurich, Switzerland.
Komvopoulos, K., Do, V., Yamaguchi, E. S., and Ryason, P. R., 2003, “Effect of Sulfur- and Phosphorus-Containing Additives and Metal Deactivator on the Tribological Properties of Boundary-Lubricated Steel Surfaces,” Tribol. Trans., 46, pp. 315–325. [CrossRef]
Wu, H., Li, J., Ma, H., and Ren, T., 2009, “The Tribolgical Behaviours of Dithiocarbamate-Triazine Derivatives as Additives in Mineral Oil,” Surf. Interface Anal., 41, pp. 151–156. [CrossRef]
Zeng, X., Wu, H., Yi, H., and Ren, T., 2007, “Tribological Behavior of Three Novel Triazine Derivatives as Additives in Rapeseed Oil,” Wear, 262, pp. 718–726. [CrossRef]
Wu, H., Ren, T., and Zuo, G., 2009, “The Tribological Chemistry of the Oil Blends of Zinc Dialkyldithiophosphate With 2-Mercaptobenzothiazole Derivatives,” Tribol. Lett., 35, pp. 171–179. [CrossRef]
Rastogi, R. B., Yadav, M., and Bhattacharya, A., 2002, “Application of Molybdenum Complexes of 1-Aryl-2,5-Dithiohydrazodicarbonamides as Extreme Pressure Lubricant Additives,” Wear252, pp. 686–692. [CrossRef]
Rastogi, R. B., and Yadav, M., 2003, “Suspension of Molybdenum–Sulphur Complexes in Paraffin Oil as Extreme Pressure Lubricants,” Tribol. Int., 36, pp. 511–516. [CrossRef]
Njiwa, P., Minfray, C., Mogne, T. L., Vacher, B., and Martin, J. M., 2011, “Zinc Dialkyl Phosphate (ZP) as an Anti-Wear Additive: Comparison With ZDDP,” Tribol. Int., 44, pp. 19–30.
Pernama, S. A., Yamaguchi, E. S., Ryason, P. R., and Komvopoulos, K., 2006, “Friction Reduction and Antiwear Capacity of Engine Oil Blends Containing Zinc Dialkyl Dithiophosphate and Molybdenum-Complex Additives,” Tribol. Trans., 49, pp. 151–165. [CrossRef]
Morina, A., Neville, A., Priest, M., and Green, J. H., 2006, “ZDDP and MoDTC Interactions and Their Effect on Tribological Performance-Tribofilm Characteristics and its Evolution,” Tribol. Int., 24, pp. 243–256.
Hu, J. Q., Wei, X. Y., Dai, G. L., Fei, Y. W., Xie, F., and Zong, Z. M., 2008, “Tribological Behaviors and Mechanism of Sulfur- and Phosphorus-Free Organic Molybdate Ester With Zinc Dialkyldithiophosphate,” Tribol. Int., 41, pp. 549–555. [CrossRef]
Yao, J. B., Wang, Q. L., Chen, S. Q., Sun, J. Z., and Dong, J. X., 2002, “Borate Esters Used as Lubricant Additives,” Lubr. Sci., 14, pp. 415–423. [CrossRef]
Rastogi, R. B., Maurya, J. L., and Jaiswal, V., 2013, “Low Sulfur, Phosphorus and Metal Free Antiwear Additives: Synergistic Action of Salicylaldehyde N(4)-Phenylthiosemicarbazones and Its Different Derivatives With Vanlube 289 Additive,” Wear, 297, pp. 849–859. [CrossRef]
Rastogi, R. B., Maurya, J. L., and Jaiswal, V., 2013, “Zero SAPs and Ash Free Antiwear Additives: Schiff Bases of Salicylaldehyde With 1,2-Phenylenediamine; 1,4-Phenylenediamine and 4,4′-Diaminodiphenylenemethane and Their Synergistic Interactions With Borate Ester,” Tribol. Trans., 56, pp. 592–606. [CrossRef]
Rastogi, R. B., Maurya, J. L., and Jaiswal, V., 2013, “Phosphorous Free Antiwear Formulations: Zinc Thiosemicarbazones-Borate Ester Mixtures” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.,227, pp. 220–233. [CrossRef]
Rastogi, R. B., Maurya, J. L., Jaiswal, V., and Tiwary, D., 2012, “Lanthanum Dithiocarbamates as Potential Extreme Pressure Lubrication Additives,” J. Ind. Eng. Chem. (Seoul, Repub. Korea), 3, pp. 32–41.
Zhang, Z., Su, C., Liu, W., Xue, Q., and Tan, M., 1996, “Study on Tribological Properties of the Complex of Rare Earth Dialkyldithiocarbamate and Phenanthroline in Lubricating Grease,” Wear, 192, pp. 6–10. [CrossRef]
Jia, Z., and Xia, Y., 2011, “Hydrothermal Synthesis, Characterization, and Tribological Behavior of Oleic Acid-Capped Lanthanum Borate With Different Morphologies,” Tribol. Lett., 41, pp. 425–434. [CrossRef]
Zhang, Z., Liu, W., and Xiu, Q., 1996, “Tribological Properties of Aluminum-On-Steel System Under the Lubrication of Grease Containing a Complex of Lanthanum N-Salicylidene Derivative of Malonic Dihydrazide,” Wear196, pp. 234–237. [CrossRef]
Tripathi, A. K., Bhattacharya, A., Singh, R., and Verma, V. K., 2000, “Tribological Studies of 1-alkyl-2,5-dithiohydrazodicarbonamides and Their Mo–S Complexes as EP and Multifunctional Additives,” Tribol. Int., 33, pp. 13–20. [CrossRef]
Manual, Seta Shell Four Ball Lubricant Testing Machine, Stanhope Seta Ltd., London, 1965.

Figures

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Fig. 1

(a) Photograph of four-ball lubricant tester at operating condition. (b) An enlarged view of four-ball rig (schematic representation).

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Fig. 2

Lanthanum(III)-1-aryl-2,5-dithiohydrazodicarbonamides

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Fig. 3

Effect of load on wear scar diameter in paraffin oil with or without additive

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Fig. 4

Effect of applied load on friction coefficient with or without additives

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Fig. 5

Effect of applied load on specific mean pressure with or without additives

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Fig. 6

Two dimensional and three dimensional AFM images in presence of additive [La(p-MeOPhTHC)3] at different loads: (a,b); ISL 980 N, (c,d) 2.5 s SDL 1098 N (e.f) JBWL 4900 N

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Fig. 7

Scanning electron micrograph of wear scar produced in presence of [La(p-MeOPhTHC)3] at different magnifications: (a,b) ISL 980 N, (c,d) 2.5 s SDL 1098 N, and (e,f) JBWL 4900 N

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Fig. 8

EDX Spectrum of the worn steel surface lubricated with 0.5% w/v concentration [La(p-MeOPhTHC)3] at 2.5 s SDL(1098 N)

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