[1] C. Lea, Energy savings through use of advanced biodegradable lubricants, Ind. Lubr. Tribol. 59(2007) 132-136. [2] W.J. Bartz, Lubricants and the environment, Tribol. Int. 31(1998) 35-47. [3] W.J. Bartz, Ecotribology:Environmentally acceptable tribological practices, Tribol. Int. 39(2006) 728-733. [4] E.L. Plumer, Formulation, Characterization and Performance of Aluminum Complex Amino-acid Grease, NLGI Spokesman, 28, 1964142-145. [5] R.J. Muir, High Performance Calcium Sulphonate Complex Lubricating Grease, NLGI Spokesman, 52, 1988140-146. [6] W. Macwood, R.J. Muir, Calcium Sulphonate Grease, One Decade Later, NLGI Spokesman, 63, 199824-37. [7] D. Liu, M. Zhang, G. Zhao, et al., Tribological behavior of amorphous and crystalline overbased calcium sulfonate as additives in lithium complex grease, Tribol. Lett. 45(2012) 265-273. [8] M. Washo, Frictional Characteristics of Greased Rolling Contact Bearings, NLGI Spokesman, 57, 1994456-462. [9] S. Okamura, M. Tyota, Long Life Urea Grease for High Temperature and High Speed Application, NLGI Spokesman, 56, 199294-100. [10] J. Yin, J. Qu, B. Song, et al., Friction and wear behavior of titanium complex grease with admixture base oil, Key Eng. Mater. 419(2010) 57-60. [11] X. Wu, G. Zhao, J. Liu, et al., Tribological properties of alkylphenyl diphosphates as high-performance antiwear additive in lithium complex grease and polyurea grease for steel/steel contacts at elevated temperature, Ind. Eng. Chem. Res. 53(2014) 5660-5667. [12] J.E. Martin-Alfonso, G. Moreno, C. Valencia, Influence of soap/polymer concentration ratio on the rheological properties of lithium lubricating greases modified with virgin LDPE, J. Ind. Eng. Chem. 15(2009) 687-693. [13] A. Kumar, B.D. Mittal, M.P. Singh, et al., Ecofriendly Titanium Complex Grease, NLGI Spokesman, 61, 199722-28. [14] A. Kumar, E. Sayanna, A.S. Verma, et al., A New Generation High Performance Titanium Complex Grease, NLGI Spokesman, 58, 199425-30. [15] A. Kumar, S.C. Nagar, B.D. Mittal, et al., Titanium Complex Grease for Girth Gear Applications, NLGI Spokesman, 63, 199915-19. [16] A. Kumar, S.C. Nagar, K.P. Naithani, et al., Enhancing Further Performance Properties of Titanium Complex Grease, NLGI Spokesman, 62, 199820-27. [17] V.J. Gatto, M.A. Grina, Effects of base oil type, oxidation test conditions and phenolic antioxidant structure on the detection and magnitude of hindered phenol/diphenylamine synergism, Lubr. Eng. 55(1999) 11-20. [18] L. Yadgarov, V. Petrone, R. Rosentsveig, Tribological studies of rhenium doped fullerene-like MoS2 nanoparticles in boundary, mixed and elasto-hydrodynamic lubrication conditions, Wear 297(2013) 1103-1110. [19] A. Rothschild, J. Sloan, R. Tenne, Growth of WS2 nanotubes phases, J. Am. Chem. Soc. 122(2000) 5169-5179. [20] J. Chen, Tribological properties of polytetrafluoroethylene, nano-titanium dioxide, and nano-silicon dioxide as additives in mixed oil-based titanium complex grease, Tribol. Lett. 38(2010) 217-224. [21] B.K. Sharma, A. Adhvaryu, J.M. Perez, et al., Soybean oil based greases:influence of composition on thermo-oxidative and tribochemical behavior, J. Agric. Food Chem. 53(2005) 2961-2968. [22] J. Chen, Synthesis, characterization, and tribological behavior of neopentyl polyol ester-based and mixed oil-based titanium complex grease, Tribol. Lett. 40(2010) 149-154. [23] G. Lai, S. Xing, Synthesis Process and Application of Organic Silicon Products, 2nd ed. Chemical industry press, Beijing, 2010(in Chinese). [24] B. Helal, B.S. Karadi, Artificial lubrication of joints:Use of silicone oil, Ann. Phys. Med. 9(1968) 34-40. |