油溶性纳米LaF3作为高性能齿轮油添加剂的潜在应用

IF 1.9 4区工程技术 Q3 ENGINEERING, CHEMICAL

Lubrication Science Pub Date : 2025-07-23 DOI:10.1002/ls.70004

Tao Wu, Shuguang Fan, Ningning Song, Chuanping Gao, Shengmao Zhang, Yujuan Zhang

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引用次数: 0

摘要

本研究旨在探索纳米LaF3作为高性能齿轮油添加剂的潜在应用。采用液相化学方法制备了二（2-乙基己基）磷酸（D2EHPA）修饰的三氟化镧纳米颗粒[记为LaF3-D2EHPA]，具有优异的分散稳定性。采用四球摩擦磨损试验机研究了纳米LaF3-D2EHPA在弱极性矿物基础油（150 N）、聚α -烯烃（PAO6）和强极性合成酯油（DIOS）中的摩擦学性能。结合耗散石英晶体微天平（QCM-D）吸附实验，进一步研究了LaF3-D2EHPA纳米颗粒与典型齿轮油极压抗磨添加剂的相容性及其作用机理。结果表明，当LaF3-D2EHPA纳米颗粒的质量分数为0.2%时，三种基础油的摩擦学性能都得到了最大程度的改善。当LaF3-D2EHPA纳米颗粒与齿轮油添加剂T321（硫化异丁烯）和T307（硫代磷酸铵）混合时，其成膜率高，抗磨损性能好，在磨损表面形成边界润滑膜。该膜由含有硫和磷的摩擦化学反应膜以及沉积的LaF3-D2EHPA纳米颗粒组成。

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Potential Application of Oil-Soluble LaF3 Nanoparticles as High-Performance Gear Oil Additives

This study aims to explore the potential application of LaF₃ nanoparticles as high-performance gear oil additives. Lanthanum trifluoride nanoparticles modified by di(2-ethylhexyl) phosphoric acid (D2EHPA) [denoted as LaF₃-D2EHPA], which exhibited excellent dispersion stability, were prepared using a liquid-phase chemical method. The tribological properties of LaF₃-D2EHPA nanoparticles in weakly polar mineral base oil (150 N), polyalphaolefin (PAO6), and strongly polar synthetic ester oil diisooctyl sebacate (DIOS) were investigated using a four-ball friction and wear tester. In combination with the adsorption experiments using a dissipative quartz crystal microbalance (QCM-D), the compatibility and action mechanisms of LaF₃-D2EHPA nanoparticles with extreme-pressure and anti-wear additives for typical gear oils were further investigated. The results indicate that when the mass fraction of LaF₃-D2EHPA nanoparticles is 0.2%, the tribological properties of all three base oils are improved to the greatest extent. When LaF₃-D2EHPA nanoparticles are mixed with gear oil additives T321 (sulfurized isobutylene) and T307 (ammonium thiophosphate), they exhibit high film-forming rates and anti-wear properties, forming a boundary lubricating film on the worn surface. This film consists of a tribochemical reaction film containing sulfur and phosphorus, as well as LaF₃-D2EHPA nanoparticles that have been deposited.

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来源期刊

Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL

CiteScore

3.60

自引率

10.50%

发文量

审稿时长

6.8 months

期刊介绍： Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.