An energy description of wear mechanisms and its applications to oscillating sliding contacts
An energy description of wear mechanisms and its applications to oscillating sliding contacts
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DOI：
10.1016/s0043-1648(03)00117-0
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发表时间：
2003-08-01
期刊：
影响因子：
5
通讯作者：
Sauger, E
中科院分区：
文献类型：
--
作者：
Fouvry, S;Liskiewicz, T;Sauger, E
为了量化磨损率，Archard方法被经典地应用。它将磨损量与滑动距离和法向载荷的乘积联系起来。然后外推磨损系数，并假设建立所研究材料的耐磨性。该合成表明，当摩擦系数不恒定时，该方法不起作用。将界面剪切功视为一个重要的磨损参数似乎更为相关。将该方法应用于不同材料的摩擦磨损试验，并将其推广到不同硬质TiN、TiC涂层的摩擦磨损试验。通过识别磨损能量系数，可以合理化磨损量化和所研究的摩擦系统的耐磨性可以分类。这似乎也是解释不同磨损机制的一种方便方法。金属材料涉及塑性应变分析从项目计算。能量平衡证实，一小部分耗散的能量消耗的塑性，而主要部分参与通过界面的热量和泥石流。当引入负载能量方法时，考虑耗散能量变量的累积密度来量化摩擦学变换结构（TTS）的形成。然后讨论了金属结构的磨损“情况”。这种能量磨损的方法是适用于分析硬质涂层的磨损机制，重点是磨损和氧化现象。局部磨损能分析被调换，从而允许量化硬质涂层的寿命。(C)2003 Elsevier Science B.V.保留所有权利。
To quantify wear rates, the Archard approach is classically applied. It relates the wear volume to the product of the sliding distance and the normal load. A wear coefficient is then extrapolated and is supposed to establish the wear resistance of the studied material. This synthesis shows that this approach does not work when the friction coefficient is not constant. It appears to be much more relevant to consider the interfacial shear work as a significant wear parameter. This approach is applied to study the wear response of different steels and then extended to different hard TiN, TiC coatings under reciprocating sliding conditions. By identifying wear energy coefficients the wear quantification can be rationalized and the wear resistance of the studied tribosystems can be classified. This also appears to be a convenient approach to interpret the different wear mechanisms. Metallic materials involving plastic strain are analyzed from ITEM computations. The energy balance confirms that a minor part of the dissipated energy is consumed by plasticity, whereas the major part participates in the heat and debris flow through the interface. When a load energy approach is introduced an accumulated density of the dissipated energy variable is considered to quantify the tribologically transformed structure (TTS) formation. A wear "scenario" of metallic structures is then discussed. This energy wear approach is applied to analyze hard coating wear mechanisms focusing on abrasion and oxidation phenomena. The local wear energy analysis is transposed, thus allowing the lifetime of hard coatings to be quantified. (C) 2003 Elsevier Science B.V. All rights reserved.