- 學位論文
TiO2、CuO奈米潤滑脂應用於氣壓缸之摩擦特性研究
Tribological characteristics of lubricated greases with TiO2 and CuO nano-particle as additives for pneumatic cylinder
摘要
本研究的目的為將TiO2、CuO奈米顆粒添加入潤滑脂(Grease)對於氣壓缸(pneumatic cylinder) 作動過程中氣壓缸內部之最大靜摩擦與動摩擦特性的分析。另一方面，利用G133往復式摩擦力量測設備，將不同重量百分比的奈米顆粒與潤滑脂合成，對鍍膜基材進行磨潤後，在進行往復運動之摩擦力測試。並利用場發射掃描式電子顯微鏡以及光學顯微鏡，觀察奈米潤滑脂的奈米顆粒形狀與試片表面磨耗之微觀結構型態。以能量分散光譜儀來分析對於試片摩擦表面產生的磨損及化合膜成份進行分析。本文之實驗中，分別對鍍膜基材進行給油及無給油的往復運動摩擦特性量測。透過實驗，得到在不同奈米顆粒重量百分比(wt%)之奈米潤滑脂的潤滑(lubrication)下鍍膜基材之摩擦力特性。此外，氣壓缸摩擦力分析實驗中，氣壓缸在不同奈米顆粒重量百分比(wt%)之奈米潤滑脂的潤滑(lubrication)件下之內部摩擦力特性結果顯示，添加CuO奈米顆粒於潤滑脂中能有效減少氣壓缸作動過程產生之磨擦力。實驗結果顯示，TiN鍍膜與添加CuO奈米顆粒於潤滑脂能有效減少往復摩擦作動過程產生之磨擦力。
並列摘要
This study aims to investigate the friction properties of lubricated greases with TiO2 and CuO nano-particle as additives for pneumatic cylinder. The lubricated greases were synthesized with 0.5wt%, 1.0wt% and 5.0wt% TiO2 and CuO nano-particle. TiO2 and CuO Nano-particles were characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). In the experiments, Nano- TiO2 and CuO greases were used to lubricate a pneumatic cylinder. A friction force measured system of pneumatic cylinder was employed to measures friction forces between cylinder bore and piston seal. Experimental equipments are designed to assess the effect of seals and lubrications, where the velocity and pressure of the driving cylinder are controlled. Measurements of friction force are shown for velocities of up to 200 mm/s. On the other hand, the linearly reciprocating ball-on-flat sliding wear device was used to measure the anti-wear ability of Nano- TiO2 and CuO greases. Results indicated that Nano- TiO2 and CuO additives can reduce the friction force and steady the reciprocate motion between piston and cylinder bore. This study provides a new method and lubricated properties of Nano- TiO2 and CuO greases to engineers to develop new lubricate greases and create steady motion setting for pneumatic cylinders.