本文選題：蒙脫石　切入點：添加劑　出處：《硅酸鹽學(xué)報》2017年08期

【摘要】：采用高速往復(fù)摩擦磨損試驗機考察了載流和無載流條件下蒙脫石作為添加劑在復(fù)合鋰基潤滑脂中的摩擦學(xué)性能,用高倍顯微鏡、掃描電子顯微鏡和X射線能譜分析儀對試塊磨斑表面進行表征,探討了其減摩抗磨及自修復(fù)機理。結(jié)果表明:蒙脫石的加入很好地改善了復(fù)合鋰基潤滑脂的減摩抗磨性能,并具有一定的自修復(fù)功能。在無載流條件下,當(dāng)無機蒙脫石的添加量為1.6%時,其摩擦因數(shù)和磨痕寬度分別比基礎(chǔ)脂降低約12.6%和38%。這是由于其摩擦化學(xué)作用在磨損表面生成具有良好減摩抗磨性能的自修復(fù)層。自修復(fù)層表面較為光滑平整且具有多孔狀特征,主要由Fe、Mg、Al等元素構(gòu)成,有效地降低了摩擦磨損。在載流條件下,自修復(fù)層能減輕電弧對摩擦接觸面的侵蝕。
[Abstract]:The tribological properties of montmorillonite as additive in lithium complex grease were investigated by high speed reciprocating friction and wear tester. The surface of wear spot was characterized by scanning electron microscope and X-ray energy spectrum analyzer, and the antiwear and self-repairing mechanism were discussed. The results show that the addition of montmorillonite can improve the antifriction and antiwear performance of the composite lithium grease. Under the condition of no load current, when the amount of inorganic montmorillonite is 1.6, The friction coefficient and the width of the wear mark are about 12.6% and 38% lower than that of the base grease, respectively. This is due to the formation of a self-repairing layer with good anti-friction and anti-wear properties on the wear surface. The surface of the self-repairing layer is smooth and porous, and the surface of the self-repairing layer is smooth and porous. The self-repairing layer can reduce the erosion of the friction contact surface under the condition of current carrier, which is mainly made up of Fe, mg, Al and other elements, which can effectively reduce the friction and wear.
【作者單位】： 華北電力大學(xué)能源動力與機械工程學(xué)院;
【基金】：國家自然科學(xué)基金(51575181)
【分類號】：TE624.83

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本文編號：1673235