Lubrication performance of GQDs@PNIPAM microgels for titanium alloys

IF 1.8 4区工程技术 Q3 ENGINEERING, CHEMICAL

Lubrication Science Pub Date : 2023-03-16 DOI:10.1002/ls.1646

Kang Fu, Kequn Sun, Quan Zheng, Lulu Yao, Ruhong Song, Yufu Xu

引用次数: 0

Abstract

The tribological behaviour of YG8-cemented carbide/Ti6Al4V (YG8/TC4) contacts under aqueous lubrication was investigated in this work. Three types of nano-additives including poly (N-isopropylacrylamide) (PNIPAM), graphene quantum dots (GQDs), and GQDs@PNIPAM microgels were prepared for use as water lubricant additives. Tribological tests were conducted at different concentrations of nano-additives using a ball-on-disk reciprocating tribometer. The experimental results show that GQDs@PNIPAM has the optimum lubricating performance, the average friction coefficient decreases by 28.7% and the average cutting wear volume of the TC4 disk increases by 29.5% when the concentration is 1.5 wt.%. This provides a new strategy for the cutting of titanium alloy materials, which not only reduces the friction coefficient, but also increases the cutting wear volume of the TC4 disk, thereby improving the machining efficiency.

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润滑性能GQDs@PNIPAM钛合金用微凝胶

研究了YG8硬质合金/Ti6Al4V（YG8/TC4）触头在水润滑条件下的摩擦学行为。三种类型的纳米添加剂，包括聚（N-异丙基丙烯酰胺）（PNIPAM）、石墨烯量子点（GQDs）和GQDs@PNIPAM制备了用作水润滑添加剂的微凝胶。使用球-盘往复式摩擦计在不同浓度的纳米添加剂下进行摩擦学试验。实验结果表明：GQDs@PNIPAM具有最佳的润滑性能，当浓度为1.5 wt.%时，TC4圆盘的平均摩擦系数降低了28.7%，平均切削磨损量增加了29.5%。这为钛合金材料的切削提供了一种新的策略，不仅降低了摩擦系数，而且增加了TC4圆盘切削磨损量，从而提高了加工效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.