On the tribology of the MAX phases and their composites during dry sliding: A review
On the tribology of the MAX phases and their composites during dry sliding: A review
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DOI：
10.1016/j.wear.2011.01.043
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发表时间：
2011-07-29
期刊：
影响因子：
5
通讯作者：
Barsoum, M. W.
中科院分区：
文献类型：
--
作者：
Gupta, S.;Barsoum, M. W.
到目前为止，它是相当好地建立，层状六方MAX相是热稳定的纳米层压材料，显示出不寻常的，有时是独特的性能。所谓这些相是因为它们具有Mn + 1AXn化学性质，其中n是1、2或3，M是前过渡金属元素，A是A族元素，X是C或N。它们具有高度的耐损伤性、抗热冲击性、易于加工性，并且具有2-8 GPa的维氏硬度值，对于过渡金属碳化物和氮化物来说非常柔软。它们中的一些在> 1000摄氏度的温度下显示出延性-脆性转变，同时在这些高温下保持良好的机械性能。此外，它们的层状性质表明它们可能具有作为固体润滑剂材料的良好前景。最近，第一代MAX Phase复合材料轴在箔轴承试验台中以50，000 rpm的转速从室温到550 ℃的热循环过程中成功地与镍基高温合金进行了对比测试。该研究进一步证明了MAX Phases及其复合材料在不同摩擦学应用中的潜力。本文综述了近年来MAX相及其复合材料的摩擦学研究进展，以期对MAX相及其复合材料的摩擦学性能有一个全面的了解。我们还提出了一种分类不同的摩擦膜的方法，以了解这些固体在各种不同的实验条件下的复杂摩擦学行为。(C)2011 Elsevier B. V.保留所有权利。
By now, it is fairly well established that the layered hexagonal MAX phases are thermodynamically stable nanolaminates displaying unusual and sometimes unique properties. These phases are so-called because they possess a Mn + 1AXn chemistry, where n is 1, 2, or 3, M is an early transition metal element, A is an A-group element and X is C or N. They are highly damage tolerant, thermal shock resistant, readily machinable, and with Vickers hardness values of 2-8 GPa, are anomalously soft for transition metal carbides and nitrides. Some of them display a ductile-brittle transition at temperatures > 1000 degrees C, while retaining decent mechanical properties at these elevated temperatures. Moreover, their layered nature suggests they may have excellent promise as solid lubricant materials. Recently, first generation MAX Phase based composites shafts were successfully tested against Ni-based superalloy at 50,000 rpm from RT till 550 degrees C during thermal cycling in a foil bearing rig. This study further demonstrates the potential of MAX Phases and their composites in different tribological applications. The main objective of this review is to present recent progress, and consequently develop a comprehensive understanding about the tribological behavior of MAX Phases and their composites. We are also proposing a way of classifying the different tribofilms to understand the complex tribological behavior of these solids over a wide range of different experimental conditions. (C) 2011 Elsevier B.V. All rights reserved.