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Synthesis, characterization, and adaptability of carbon nanotube-based solid lubricants.

机译：碳纳米管基固体润滑剂的合成，表征和适应性。

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摘要

Solid lubricants possessing low friction coefficients, low wear rates, and long wear lives are vital for significantly increasing the life span of instruments undergoing extreme frictional wear due to harsh environments. Solid lubricants currently used in high temperatures or excess humidity, such as MoS2, WS2, graphite, or noble metals, are unable to sustain superior frictional qualities over extended amounts of time or in changing environments. To ameliorate these limiting properties, a composite solid lubricant is produced to enable the favorable frictional properties of one lubricant to overcome the lacking frictional properties of the other. This composite uses the combined materials to produce a solid lubricant that can sustain a low friction coefficient and wear rate for a longer amount of time than each individual material. MoS2 electrodeposited on to carbon nanotubes (CNTs) has a lower friction coefficient in humid (&sim0.16), non-humid (&sim0.05) and non-humid/humid cycled (&sim0.075-0.2) environments than either bare MoS2 or bare CNTs. Similarly, silver deposited on CNTs, by electrodeposition, electroless deposition, and sputter coating, performs better in room temperature, high temperature (500°C), and room temperature/high temperature cycling environments than either of its individual materials. Using the techniques used to produce these solid lubricant composite coatings with appealing frictional properties will provide a variety of tribological applications involving high temperature and/or high humidity environments with necessary solutions and further facilitate the improvement of solid lubricants used in other extreme environments.
机译：固体润滑剂具有低摩擦系数，低磨损率和长寿命，对于大幅增加由于恶劣环境而遭受极端摩擦磨损的仪器的使用寿命至关重要。当前在高温或过高湿度下使用的固体润滑剂，例如MoS2，WS2，石墨或贵金属，无法在延长的时间内或在变化的环境中保持优异的摩擦性能。为了改善这些限制特性，生产了一种复合固体润滑剂，以使一种润滑剂的有利摩擦性能克服另一种润滑剂缺乏的摩擦性能。该复合材料使用混合的材料来生产固体润滑剂，该固体润滑剂与每种材料相比，可保持较低的摩擦系数和磨损率更长的时间。电沉积到碳纳米管（CNTs）上的MoS2在潮湿（＆sim0.16），非潮湿（＆sim0.05）和非潮湿/潮湿循环（＆sim0.075-0.2）环境中的摩擦系数均低于裸MoS2或裸露的碳纳米管。同样，通过电沉积，化学沉积和溅射镀膜沉积在CNT上的银在室温，高温（500°C）和室温/高温循环环境中的性能要优于其任何一种材料。使用用于生产具有吸引人的摩擦性能的固体润滑剂复合涂料的技术，将为涉及高温和/或高湿度环境的各种摩擦学应用提供必要的解决方案，并进一步促进在其他极端环境中使用的固体润滑剂的改进。

著录项

  • 作者

    Church, Amelia H.;

  • 作者单位

    Southern Illinois University at Carbondale.;

  • 授予单位 Southern Illinois University at Carbondale.;
  • 学科 Physics Condensed Matter.Nanotechnology.
  • 学位 M.S.
  • 年度 2010
  • 页码 104 p.
  • 总页数 104
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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