3;復(fù)合材料;摩擦學(xué)性能;磨損機(jī)理"/> 3復(fù)合材料,用SEM、TEM對(duì)其形貌進(jìn)行了表征,利用多功能往復(fù)摩擦磨損試驗(yàn)儀考察了石墨烯負(fù)載納米LaF3復(fù)合材料在純水中的摩擦磨損性能。通過(guò)SEM、XPS分別分析了磨痕表面的形貌、典型元素的化學(xué)狀態(tài),初步探討了石墨烯負(fù)載納米LaF3復(fù)合材料在純水中的潤(rùn)滑機(jī)理。結(jié)果表明：納米LaF3均勻分布于多層石墨烯片層表面和層間,其粒徑為5~50nm；其作為純水添加劑具有良好的減摩抗磨性能,如試驗(yàn)載荷10N,濃度0.01wt%時(shí),與純水潤(rùn)滑時(shí)相比,石墨烯負(fù)載納米LaF3復(fù)合材料水分散體系潤(rùn)滑下平均摩擦系數(shù)和磨損體積分別下降34.35%和52.40%,這主要是由于復(fù)合材料在磨損表面形成的吸附膜、摩擦化學(xué)反應(yīng)膜發(fā)生協(xié)同作用,改變了水的磨損機(jī)理,抑制了Fe的氧化,使得摩擦表面的摩擦磨損得到減輕。"/>

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石墨烯負(fù)載納米LaF3復(fù)合材料的摩擦學(xué)性能
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裝甲兵工程學(xué)院 裝備再制造國(guó)防科技重點(diǎn)實(shí)驗(yàn)室,裝甲兵工程學(xué)院 裝備再制造國(guó)防科技重點(diǎn)實(shí)驗(yàn)室,裝甲兵工程學(xué)院 裝備再制造國(guó)防科技重點(diǎn)實(shí)驗(yàn)室,裝甲兵工程學(xué)院 裝備再制造國(guó)防科技重點(diǎn)實(shí)驗(yàn)室

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國(guó)家自然科學(xué)基金資助(5105397)；北京市自然科學(xué)基金資助(3122031)


The Tribological Properties of Graphene-based LaF3 Nanocomposite Matirials
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National Key Laboratory of Remanufacturing,Academy of Armored Force Engineering,National Key Laboratory of Remanufacturing,Academy of Armored Force Engineering,National Key Laboratory of Remanufacturing,Academy of Armored Force Engineering,National Key Laboratory of Remanufacturing,Academy of Armored Force Engineering

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    摘要:

    采用液相超聲直接剝離法制備了石墨烯負(fù)載納米LaF3復(fù)合材料,用SEM、TEM對(duì)其形貌進(jìn)行了表征,利用多功能往復(fù)摩擦磨損試驗(yàn)儀考察了石墨烯負(fù)載納米LaF3復(fù)合材料在純水中的摩擦磨損性能。通過(guò)SEM、XPS分別分析了磨痕表面的形貌、典型元素的化學(xué)狀態(tài),初步探討了石墨烯負(fù)載納米LaF3復(fù)合材料在純水中的潤(rùn)滑機(jī)理。結(jié)果表明：納米LaF3均勻分布于多層石墨烯片層表面和層間,其粒徑為5~50nm；其作為純水添加劑具有良好的減摩抗磨性能,如試驗(yàn)載荷10N,濃度0.01wt%時(shí),與純水潤(rùn)滑時(shí)相比,石墨烯負(fù)載納米LaF3復(fù)合材料水分散體系潤(rùn)滑下平均摩擦系數(shù)和磨損體積分別下降34.35%和52.40%,這主要是由于復(fù)合材料在磨損表面形成的吸附膜、摩擦化學(xué)反應(yīng)膜發(fā)生協(xié)同作用,改變了水的磨損機(jī)理,抑制了Fe的氧化,使得摩擦表面的摩擦磨損得到減輕。

    Abstract:

    Graphene-based LaF3 (GN/LaF3)nanocomposite materials were prepared by the melthod of Liquid-phase Ultrasonic Exfoliation. The morphologies of GN/LaF3nanocomposite materials were charactered by means of SEM, TEM. Its tribological properties as water additive were investigated using an multi-functional reciprocating friction and wear tester. The lubrication mechanism was discussed based on the results of analysises of SEM, XPS. The results showed that the LaF3nanoparticles, at the size of 5-50nm, were densely and randomly deposited on the surface of multilayer graphene sheets. The GN/LaF3nanocomposite materials express good friction-reducing and antiwear performance. Compared with pure water, it can reduce the friction coefficient at 34.35% and the wear mass fall at 52.40% with the load 10N and concentration 0.01wt%. The prosperity is attributed to the effection of the adsorption membrane and tribochemistry reaction films which inhibit the oxidation of Fe and reduce the wear.

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趙海朝,喬玉林,臧艷,張慶.石墨烯負(fù)載納米LaF3復(fù)合材料的摩擦學(xué)性能[J].稀有金屬材料與工程,2017,46(5):1293~1298.[Zhao Haichao, Qiao Yulin, Zang Yan, Zhang Qing. The Tribological Properties of Graphene-based LaF3 Nanocomposite Matirials[J]. Rare Metal Materials and Engineering,2017,46(5):1293~1298.]
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  • 收稿日期:2015-01-14
  • 最后修改日期:2015-03-05
  • 錄用日期:2015-08-11
  • 在線發(fā)布日期: 2017-09-27
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