Abstract

To extend the service time of #45 steel, Ni–Fe–Co–P alloy coatings were prepared on workpieces. CeO₂ nanoparticles were also added and a heat treatment was carried out. Both the addition of CeO₂ nanoparticles and the heat treatment had a positive influence on the dispersion strengthening, the fine grain strengthening, and the pinning effect. The surface topography and the chemical composition of the coatings as well as the microstructure were analyzed by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometry (EDS), and X-ray diffraction (XRD). The microhardness was tested with a Duramin-40 hardness tester. The wear resistance reflected by the wear mark was observed by a LEXT4100 laser confocal microscope The coating with the stable intermetallic compounds and the highest wear resistance were obtained for a CeO₂ nanoparticles content of 1g/L and a heat treatment temperature of 400°C because the main phase is NiP₃ and the wear mark is the smallest for these parameters.

中文翻译：

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热处理后Ni-Fe-Co-P / CeO 2复合涂层的显微组织和耐磨性

摘要

为了延长＃45钢的使用寿命，在工件上准备了Ni-Fe-Co-P合金涂层。还添加CeO ₂纳米颗粒，并进行热处理。既添加CeO ₂纳米粒子和热处理对分散强化，细晶粒强化和钉扎效果有积极影响。通过扫描电子显微镜（SEM）和能量色散谱（EDS）以及X射线衍射（XRD）分析了涂层的表面形貌，化学成分以及微观结构。用Duramin-40硬度测试仪测试显微硬度。通过LEXT4100激光共聚焦显微镜观察到由磨损痕迹反射的耐磨性。当CeO ₂纳米颗粒含量为1g / L，热处理温度为400°C时，可以获得具有稳定的金属间化合物和最高耐磨性的涂层。主要阶段是NiP ₃ 对于这些参数，磨损痕迹最小。