This study aims to investigate the friction coefficient of Al2O3–NbC nanocomposite obtained by spark plasma sintering sliding against a steel ball.,Tribological tests were carried out using a reciprocating nanotribometer in a ball on flat configuration with normal loads in the range from 10 to 100 mN under dry conditions. Surface changes were analyzed by confocal microscopy and 3D profilometry.,The values of the friction coefficient varied from 0.15 to 0.6 and are independent of the applied load.,The tribological behavior is attributed to fracture in the contact region and the effect of wear debris.,The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0356/

中文翻译：

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放电等离子烧结-SPS纳米复合Al2O3-NbC摩擦系数研究

本研究旨在研究通过放电等离子烧结与钢球滑动获得的 Al2O3-NbC 纳米复合材料的摩擦系数。使用往复式纳米摩擦计在平面配置的球中进行摩擦学测试，正常载荷范围为 10 至 100 mN 在干燥条件下。通过共聚焦显微镜和 3D 轮廓仪分析表面变化。摩擦系数的值从 0.15 到 0.6 不等，与施加的载荷无关。摩擦学行为归因于接触区域的断裂和磨屑的影响。 ,本文的同行评审历史可在：https://publons.com/publon/10.1108/ILT-08-2019-0356/