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Tribological behaviors of some novel dimercaptothiadiazole derivatives containing hydroxyl as multifunctional lubricant additives in biodegradable lithium grease
Chen, H; Jiang, JH; Ren, TH; Zheng, L; Zhao, YD; Zheng L(郑雷); Zhao YD(赵屹东)
2014
发表期刊INDUSTRIAL LUBRICATION AND TRIBOLOGY
卷号66期号:1页码:51-61
摘要Purpose - In order to meet the requests of exploring environmental-friendly and multifunctional lubricant additives, some novel dimercaptothiadiazole derivatives containing hydroxyl are prepared and used as antiwear (AW) and extreme-pressure (EP) additives in biodegradable lithium grease. The paper aims to discuss these issues. Design/methodology/approach - The tribological performances of the grease samples containing these derivatives are evaluated by using a four-ball tester. X-ray absorption near edge structure (XANES) spectroscopy is used to analyze the chemistry of tribofilms under AW/EP regime, and thermal films are also considered for comparison. Findings - The tribological tests show that these derivatives are all effective in reducing wear, especially at lower additive concentrations, but they are basically failed in reducing friction. They are also helpful in improving the EP characteristic of the base grease. The thermal films generated by these derivatives are composed of adsorbed organic sulfide and ferrous sulfate, though for short-chain derivatives, organic sulfide is the only component at 5.0 wt.%. Ferrous sulfide is the main component of the tribofilms formed by these derivatives at various additive concentrations. But for short-chain derivatives, these tribofilms consist of ferrous sulfide and ferrous disulfide at 5.0 wt.%, and the appearance of disulfide suggests that the interfacial temperature between the upper ball and three lower balls under these conditions is considerably low. The EP films generated by short-chain derivatives are all composed of organic sulfide and ferrous sulfide, while for long-chain derivatives, ferrous sulfide is the main component. Originality/value - These low-toxic and oil-soluble dimercaptothiadiazole derivatives are effective in improving the tribological characteristic of the biodegradable lithium grease, and these heterocyclic derivatives may be good substitutes for some harmful traditional additives.
关键词Tribology Wear Friction Greases Surface films
学科领域Engineering
DOI10.1108/ILT-08-2011-0065
收录类别SCI
WOS记录号WOS:000331773500008
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225031
专题多学科研究中心
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GB/T 7714
Chen, H,Jiang, JH,Ren, TH,et al. Tribological behaviors of some novel dimercaptothiadiazole derivatives containing hydroxyl as multifunctional lubricant additives in biodegradable lithium grease[J]. INDUSTRIAL LUBRICATION AND TRIBOLOGY,2014,66(1):51-61.
APA Chen, H.,Jiang, JH.,Ren, TH.,Zheng, L.,Zhao, YD.,...&赵屹东.(2014).Tribological behaviors of some novel dimercaptothiadiazole derivatives containing hydroxyl as multifunctional lubricant additives in biodegradable lithium grease.INDUSTRIAL LUBRICATION AND TRIBOLOGY,66(1),51-61.
MLA Chen, H,et al."Tribological behaviors of some novel dimercaptothiadiazole derivatives containing hydroxyl as multifunctional lubricant additives in biodegradable lithium grease".INDUSTRIAL LUBRICATION AND TRIBOLOGY 66.1(2014):51-61.
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