The influence of surrounding atmosphere on tribological properties of hard protective coatings
The influence of surrounding atmosphere on tribological properties of hard protective coatings
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DOI：
10.1016/j.surfcoat.2014.11.068
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发表时间：
2015-04
影响因子：
5.4
通讯作者：
A. Drnovšek;P. Panjan;M. Panjan;S. Paskvale;Jože Buh;M. Čekada
中科院分区：
文献类型：
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作者：
A. Drnovšek;P. Panjan;M. Panjan;S. Paskvale;Jože Buh;M. Čekada
在本研究中，我们比较了常规硬质涂层(TiN、CrN、TiAlN)和更先进的防护涂层(CrxA11、−和−)的摩擦学性能。许多因素会影响涂层的摩擦学性能；因此，我们的研究仅限于评估涂层在不同环境气氛中的摩擦学行为。我们在空气(高、中、低湿度)、氮气和氧气环境中进行了摩擦学试验。实验表明，富氧环境会在较低的温度下形成氧化物，而氮气环境的使用可以有效地阻止氧化过程，从而减少磨损。根据大气类型的不同，我们遇到了不同的摩擦磨损行为。为了充分了解摩擦学试验过程中的磨损过程，分别研究了每种硬质涂层的磨损机理。用扫描电子显微镜、聚焦离子束(FIB)、3D针式轮廓仪和共聚焦光学显微镜对磨屑和磨痕进行了分析。
In this research paper we compare the tribological properties of conventional hard coatings (TiN, CrN, TiAlN) and more advanced protective coatings (CrxA11 − xN and CrxV1 − xN). Numerous factors can influence the coating tribological properties; thus we limit our research to evaluate the tribological behaviour in different surrounding atmospheres. We preformed tribological tests in the air (high, medium and low humidity), nitrogen and oxygen environment. Experiments indicate that oxygen-rich environment causes the formation of oxides at lower temperatures while the use of the nitrogen environment can effectively stop the oxidation process which results in a reduction of wear. We encountered different friction and wear behaviour in dependence of the atmosphere type. To fully understand the processes during tribological testing, the wear mechanisms were investigated for each hard coating separately. The wear debris and the wear tracks were analysed by SEM, focused ion beam (FIB), 3D-stylus profilometry and confocal optical microscopy.