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Experimental investigation on the effect of ceramic coating on the wear resistance of Al6061 substrate

机译:陶瓷涂层对Al6061基材耐磨性影响的实验研究

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In the present research work, various ceramic materials such as Al2O3- Cr2O3- SiC, and Al2O3- ZrO2- TiO2were developed for the analysis of wear performance and hardness. The specimens were coated using plasma spray coating technique. A bond coat of 50μm thickness was applied on the substrate using NiCrAlY for good adhesion before laying the top coat. The wear behaviour and hardness of the samples were investigated by wear and hardness tests. The Energy Dispersive X-ray Analysis (EDAX) was performed to analyse the chemical composition of the samples. The Field Emission Scanning Electron Microscope (FE-SEM) was used to analyse the surface and cross-section of the samples. X-ray diffraction (XRD) studies are carried out to understand the structural and crystallographic information. The performances of the coated and uncoated samples were compared and investigated. It was observed that the specimen with Al2O3(60%) + ZrO2(20%) + TiO2(20%) coating produced best results for wear rate (0.03612mm/Nm) and Coefficient of friction (0.357). The proposed ceramic coating composition could be recommended for automobile components that require good wear and heat resistance to improve the service life.
机译:在本研究工作中,各种陶瓷材料如Al2O3-CR2O3-SiC和Al2O3- ZrO2-TiO2,用于分析磨损性能和硬度。使用等离子体喷涂技术涂覆样品。在铺设顶部涂层之前,在基材上施加在基板上施加50μm厚的粘合涂层。通过磨损和硬度测试研究样品的磨损行为和硬度。进行能量分散X射线分析(edax)以分析样品的化学成分。场发射扫描电子显微镜(Fe-SEM)用于分析样品的表面和横截面。进行X射线衍射(XRD)研究以了解结构和晶体学信息。比较并研究了涂覆和未涂覆样品的性能。观察到具有Al 2 O 3(60%)+ ZrO 2(20%)+ TiO2(20%)涂层的样品为磨损率(0.03612mm / nm)和摩擦系数产生了最佳结果(0.357)。建议的陶瓷涂料组合物可以推荐用于需要良好磨损和耐热性以改善使用寿命的汽车部件。

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