奈米潤滑液之製備與磨潤特性研究

A study of tribological properties for preparing nanoparticles lubricant

李忠諺(Zhong-Yan Li)

指導教授 ： 張合 ； 韓麗龍

國立臺北科技大學/機電學院/製造科技研究所/碩士(2009年)

摘要

本研究選擇車用引擎潤滑液添加奈米金屬，利用改良式真空潛弧製造系統(SANSS)製備奈米氧化銅(CuO)與奈米二氧化鈦(TiO2)溶液懸液，並研製出一階合成、二階合成與商用粉末合成等三種製程方法。除了探討奈米顆粒的形貌特性外，並使用微摩擦測試儀量測各合成油液的摩擦係數。在磨耗特性方面，利用往復式摩耗試驗機進行實驗，磨耗後的試片分別利用場發射掃瞄式電子顯微鏡、電子天秤等精密分析儀器，觀察奈米金屬顆粒形狀與試片表面磨耗微觀結構型態。實驗結果顯示，在鈦系複合潤滑液中，使用商業粉末合成之奈米鈦油液有最低摩擦係數、最低磨耗損失量與最平緩之磨耗表面；而在銅系複合潤滑液中，表現最為出色的是一階合成之奈米銅油液。將這二種潤滑液做比較，一階銅液的磨潤特性則又比商業鈦液來得出色，推斷因磨耗負荷力、試片硬度等相關因素造成鈦金屬無法有效達到顆粒磨潤作用。

關鍵字

磨耗 ； 奈米金屬顆粒 ； 潤滑液 ； 摩擦係數

並列摘要

Using metal nanoparticles as additive in engine oil. This purpose of this study is to use an innovation Submerged Arc Nanoparticles Synthesis System (SANSS) to prepare the CuO nanofluids and the TiO2 nanofluids. There are there ways which are one step synthesize, two step synthesize and commercial powder two step synthesize to manufacture nanofluids. In addition to discuss the nanoparticles surface, we use universal micro-tribometer to measure the friction coefficient of each composite oil. We also use the reciprocating wearing tester to analyze the wearing characters. Finally, we use the FE-SEM and the electronic scale separately to observe the nanoparticles surface and the wearing surface on disc. From experiment results reveal that commercial TiO2 nanofluid has the lowest friction coefficient, the lowest wear loss and the most gently wearing surface. And the best nanofluid of Cu series composite oil is one step synthesize CuO nanofluid. To make compare with this two kinds of nanofluid, we can find one step synthesize CuO nanofluid are batter than commercial TiO2 nanofluid. We infer that the load and the hardness between disc and nanoparticles make TiO2 nanoparticles can’t develop good lubricative effect.

並列關鍵字

wear ； nanoparticles ； lubricant ； friction coefficient

參考文獻

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