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Fundamental Study on Tribological Properties of Ionic Liquid containing Self-lubricative Nano Particles

含自润滑纳米粒子离子液体摩擦学性能的基础研究

基本信息

批准号：
18560126
负责人：
HIRATA Atsushi
金额：
$ 2.58万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560126/
关键词：
Tribology Nano-scale material Ionic liquid Self-lubrication Carbon onion Diamond ゲルナノ粒子

项目摘要

In order to achieve highly functional tribological systems, it is necessary to study effective applications of new materials suitable for lubricants. In the field of the lubrication by fluids, ionic liquids that show non-volatility and non-combustibility are one of highly potential candidates for a wide range of environments. Another prospective material in solid lubrication is self-lubricating nano-particles as a new class of solid lubricants. This study focused on the compound system of these new lubricative materials and examined fundamental properties of the mixture of an ionic liquid and nano-particles. Carbon onions were added to imidazolium-based ionic liquid to form a gel. Friction measurements were conducted using a ball-on-disk tribometer in air and vacuum at the temperatures ranging from 20 to 200℃.As a result, the compound gel showed lower friction coefficients than the ionic liquid itself when normal load was high. This would be caused by the increasing viscoelasticity of the compound gel that behaves like grease. Furthermore, the tribological properties of the compound gel were superior to the ionic liquid in vacuum at 20-200℃.On the other hand, the ionic liquid containing nano-particles of diamond produced wear of sliding surfaces without showing lubricative property.

为了实现高功能的摩擦学系统，有必要研究适用于润滑剂的新材料的有效应用。在流体润滑领域，离子液体具有不挥发、不燃烧的特性，是一种具有广泛应用前景的润滑剂。自润滑纳米颗粒作为一种新型的固体润滑剂，在固体润滑领域具有广阔的应用前景。本研究以这些新型润滑材料的复合体系为研究对象，考察了离子液体与纳米粒子混合物的基本性质。将碳洋葱加入到基于咪唑的离子液体中以形成凝胶。在20 ~ 200℃温度范围内，采用球-盘摩擦磨损试验机在空气和真空中进行摩擦测试，结果表明，在高法向载荷下，复合凝胶的摩擦系数低于离子液体本身。这可能是由于表现得像油脂的复合凝胶的粘弹性增加引起的。在20-200℃的真空条件下，复合凝胶的摩擦学性能上级离子液体;而含纳米金刚石颗粒的离子液体在摩擦过程中产生了摩擦磨损，但没有表现出润滑性能。