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Study of Zinc Dialkyldithiophosphate Using Electrochemical Techniques

机译:用电化学技术研究二烷基二硫代磷酸锌

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Electrochemical techniques have been applied to study the redox behaviour of the antiwear additive zinc di-isooctyldithiophosphate (ZDDP) in an ester base fluid and to investigate the influence of applied electrode potential on its friction and wear properties. Using cyclic voltammetry it has been shown that the ZDDP is oxidised in a chemically irreversible, two-electron transfer process at applied potentials above +0.5 V vs. Pt. High frequency reciprocating tests have shown that ZDDP is effective in reducing both friction and wear only under oxidising conditions, and not at the rest potential or in reducing conditions. This electrochemical approach can thus be used to explore the operating conditions and mechanism of action of antiwear additives.
机译:已经应用了电化学技术以研究酯基流体中抗磨添加剂锌二辛二硫代磷磷酸盐(ZDDP)的氧化还原行为,并研究施加电极电位对摩擦磨损性能的影响。使用循环伏安法已经证明,ZDDP在施加电位的化学不可逆转的两电子转移过程中氧化,在+0.5V与Pt上高于+ 0.5V与Pt。高频往复试验表明,ZDDP仅在氧化条件下仅减少摩擦和磨损,而不是在剩余电位或还原条件下。因此,这种电化学方法可用于探索抗磨添加剂的操作条件和作用机制。

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