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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >WEAR RESISTANCE AND MECHANICAL PROPERTIES OF SANDWICH-LIKE NANOSTRUCTURED COMPOSITES AND APPLICATION IN FUEL CONTAINERS
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WEAR RESISTANCE AND MECHANICAL PROPERTIES OF SANDWICH-LIKE NANOSTRUCTURED COMPOSITES AND APPLICATION IN FUEL CONTAINERS

机译：类似于三明治结构的纳米复合材料的耐磨性和机械性能及其在燃料容器中的应用

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摘要

A new aluminum oxide-chromium carbide-based composite coating has been developed for practical application in aerospace/automotive fuel tanks. The protective sandwich-like composite coating has perfect combination of thermal/mechanical and tribological properties over a wide temperature range. Pyrolitic deposition of CrC layer was used to mechanically/thermally strength aluminum oxide layer formed on aluminum/polymer-based substrate of fuel tank. CrC layer has strengthened aluminum oxide layer by filing surface defects and pores. Friction and wear rate were determined using a pin on disk tribometer at 25-900℃ temperatures in hydrogen, helium, and air. Pin materials included several metallic alloys and silicon carbide. It was revealed that appropriate additions of disulfide molybdenum, or diamond nanoparticles to the baseline composition significantly reduced friction coefficients while preserving, and in some cases, even enhancing wear resistance. The results of this study demonstrate that the composite is a promising coating composition to consider for high-temperature and/or cryogenic aerospace and advanced fuel tank applications. The excellent results in hydrogen make this composite coating of particular interest for use in automotive fuel tanks. Based upon observed tribological mechanics model has been proposed to describe thermal/mechanical behavior of the composite coating.
机译：已经开发出一种新的氧化铝-碳化铬基复合涂层，用于航空航天/汽车燃料箱的实际应用。这种保护性的三明治状复合涂层在很宽的温度范围内具有热/机械和摩擦学性能的完美结合。 CrC层的热解沉积用于机械/热增强在燃料箱的铝/聚合物基基材上形成的氧化铝层。 CrC层通过填充表面缺陷和孔隙来增强氧化铝层。使用圆盘摩擦计上的销在25-900℃的温度下在氢气，氦气和空气中测定摩擦和磨损率。引脚材料包括几种金属合金和碳化硅。揭示了在基础组合物中适当添加二硫化钼或金刚石纳米粒子可显着降低摩擦系数，同时保留并在某些情况下甚至提高耐磨性。这项研究的结果表明，该复合材料是一种有前途的涂料组合物，可用于高温和/或低温航空航天和先进的燃料箱应用。氢的优异结果使这种复合涂料特别适用于汽车油箱。基于观察到的摩擦力学模型，提出了描述复合涂层热/机械行为的模型。

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