Abstract:
The aim of this article is to experimentally determine the role of the environment, consisting of a base oil (PAO), carbon nanomaterials, and optional other additives, as well as the kind of metal in contact with the lubrication film, in the stimulation of zinc dialkyldithiophosphate (ZDDP) additives\' effectiveness during protective film formation. This paper focuses on the role of carbon nanostructures in energy transportation and conversion during tribological processes. An antistatic additive (ASA) (not used in lubricating oils) for jet fuels was added to disturb the process of energy conduction (electric charges) through the lubricant film and thus determine how this disturbance affects the kinetics of the ZDDP triboreaction and, consequently, the linear wear. To achieve this research goal, two types of tribological testing devices were used: an Anton Paar tribometer (TRB) and a triboelectric tribometer (TET). The novelty of the present research is in the use of the method for disturbing the flow of charge/energy through the lubricant film with an antistatic additive for jet fuels, ASA, to influence the impact of this energy on the antiwear properties of ZDDP. The following conclusions were drawn: (1) carbon-based nanostructures, i.e., CNTs, AuCNTs, graphene, and fullerenes, are able to change the rate of chemical reactions of ZDDP during tribological processes; (2) CNTs have the ability to catalyze tribochemical reactions of ZDDP, while graphene and fullerenes are not able to perform this effectively; (3) AuCNT takes the role of an inhibitor during ZDDP\'s triboreaction; and (4) by discharging electric charge/energy, ASA, in cooperation with CNT and AuCNT significantly reduces the rate of the ZDDP reaction.
摘要:
本文的目的是通过实验确定环境的作用,由基础油(PAO)组成,碳纳米材料,和可选的其他添加剂,以及与润滑膜接触的金属种类,在保护膜形成过程中刺激二烷基二硫代磷酸锌(ZDDP)添加剂的有效性。本文重点研究了碳纳米结构在摩擦学过程中能量传输和转化中的作用。加入了用于喷气燃料的抗静电添加剂(ASA)(不用于润滑油),以干扰通过润滑剂膜的能量传导(电荷)过程,从而确定这种干扰如何影响ZDDP摩擦反应的动力学,因此,线性磨损。为了实现这一研究目标,使用了两种类型的摩擦学测试设备:安东帕摩擦计(TRB)和摩擦电动摩擦计(TET)。本研究的新颖之处在于使用用于喷气燃料的抗静电添加剂干扰通过润滑膜的电荷/能量流动的方法。ASA,以影响该能量对ZDDP的抗磨性能的影响。得出以下结论:(1)碳基纳米结构,即,CNT,AuCNT,石墨烯,石墨烯和富勒烯,能够改变ZDDP在摩擦过程中的化学反应速率;(2)碳纳米管具有催化ZDDP摩擦化学反应的能力,而石墨烯和富勒烯不能有效地执行此操作;(3)AuCNT在ZDDP的摩擦反应过程中起到抑制剂的作用;(4)通过释放电荷/能量,ASA,与CNT和AuCNT合作显著降低ZDDP反应的速率。