Niemczewska-Wójcik Magdalena, Pethuraj Manickaraj, Uthayakumar Marimuthu, Abdul Majid Mohd Shukry
Faculty of Mechanical Engineering, Cracow University of Technology, Jana Pawla II 37, 31-846 Cracow, Poland.
Faculty of Mechanical Engineering, Younus College of Engineering and Technology, Kollam 691010, Kerala, India.
Materials (Basel). 2022 Jan 4;15(1):358. doi: 10.3390/ma15010358.
Due to their excellent synergistic properties, Aluminum Matrix Composites (AMC) have achieved a high degree of prominence in different industries. In addition to strength, the wear resistance of materials is also an important criterion for numerous applications. The wear resistance depends on the surface topography as well as the working conditions of the interacting parts. Therefore, extensive experiments are being conducted to improve the suitability of engineering materials (including AMC) for different applications. This paper presents research on manufactured aluminum metal matrix composites reinforced with 10 wt.% of AlSiO (aluminum sillimanite). The manufactured and prepared samples were subjected to surface topography measurements and to tribological studies both with and without lubricant using a block-on-ring tester. Based on the results, analyses of the surface topography (i.e., surface roughness parameters, Abbott-Firestone curve, and surface defects) as well as of the tribological characteristics (i.a. friction coefficient, linear wear, and wear intensity) were performed. Differences in the surface topography of the manufactured elements were shown. The surface topography had a significant impact on tribological characteristics of the sliding joints in the tests where lubrication was and was not used. Better tribological characteristics were obtained for the surfaces characterized by greater roughness (determined on the basis of both the profile and surface texture parameters). In the case of tribological tests with lubrication, the friction coefficient as well as the wear intensity was significantly lower compared to tribological tests without lubrication. However, lower values of the friction coefficient and wear intensity were still recorded for the surfaces that were characterized by greater roughness. The obtained results showed that it is important to analyze the surface topography because surface characteristics influence tribological properties.
由于具有优异的协同性能，铝基复合材料（AMC）在不同行业中已获得高度关注。除强度外，材料的耐磨性也是众多应用的一项重要标准。耐磨性取决于表面形貌以及相互作用部件的工作条件。因此，正在进行大量实验以提高工程材料（包括AMC）对不同应用的适用性。本文介绍了对含10 wt.%硅酸铝（AlSiO，即硅线石）增强的铝基金属基复合材料的研究。对制造并制备好的样品进行了表面形貌测量以及使用销 - 盘摩擦磨损试验机在有润滑剂和无润滑剂条件下的摩擦学研究。基于这些结果，对表面形貌（即表面粗糙度参数、阿伯特 - 费尔斯通曲线和表面缺陷）以及摩擦学特性（如摩擦系数、线性磨损和磨损强度）进行了分析。展示了制造部件表面形貌的差异。在使用和不使用润滑的试验中，表面形貌对滑动接头的摩擦学特性有显著影响。对于粗糙度较大的表面（基于轮廓和表面纹理参数确定），获得了更好的摩擦学特性。在有润滑的摩擦学试验中，与无润滑的摩擦学试验相比，摩擦系数以及磨损强度显著更低。然而，对于粗糙度较大的表面，仍记录到较低的摩擦系数和磨损强度值。所得结果表明分析表面形貌很重要，因为表面特性会影响摩擦学性能。
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