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Preparation and tribological performance of novel organotin compound as lubricant additive |
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| Authors: | Liu Ren-de Tao De-hua Zhao Yuan Cao Wei-guo Zhang Jian-hua Fu Shang-fa |
| Affiliation: | (1) School of Electromechanical Engineering and Automation, Shanghai University, 200072 Shanghai, P.R. China;(2) Shanghai Baosteel Equipment Survey Company, 201900 Shanghai, P.R. China;(3) Wuhan Research Institute of Materials Protection, 430030 Wuhan, P. R. China;(4) College of Sciences, Shanghai University, 200436 Shanghai, P.R. China |
| Abstract: | Oil-soluble stannous naphthenate (SN) is synthesized by using naphthenatic acid and SnO. And its molecular structure is confirmed by IR and multielement oil analyzer (MOA). The tribological performances of the organotin as lubricant additive are evaluated with a four-ball friction and wear tester. These experiments indicate that the wear scar diameter (WSD) and friction coefficient are diminished while the load-carrying capability increased by comparison with that of base oil. The elemental composition of the boundary lubricating film is examined by means of Auger electron spectroscopy (AES). Synergistic effect is found in the load-carrying capability of the complex of SN and sulfured olefin. The analytical results of AES indicate that the good performance of stannous naphthenate is attributed to the formation of a boundary lubricating film containing Sn on the rubbed surface. |
| Keywords: | stannous naphthenate organotin synthesis additive tribological performance synergistic effect. |
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