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首页> 外文期刊>Metallurgical and Materials Transactions B >Microstructural and Mechanical Properties of Ni-Base Thermal Spray Coatings Deposited by Flame Spraying
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Microstructural and Mechanical Properties of Ni-Base Thermal Spray Coatings Deposited by Flame Spraying

机译：火焰喷涂镍基热喷涂层的组织和力学性能

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摘要

In this work, two different Ni-base powders, namely, ProXon 21021 (P21) and ProXon 21031 (P31), were sprayed onto a steel substrate 35CrMo4 using a thermal flame spray technique. The morphology and chemical composition of the phases that are present in the powders and coatings were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). The hardness and wear resistance of the coatings were investigated. The XRD analysis revealed that the phases present in the coatings are different from the initial powders. In addition, some inhomogeneities such as oxides, porosity, and unmelted particles were observed by SEM. It was found that the P31 spray-coated exhibited higher microhardness, higher wear resistance, and significantly lower friction coefficient in comparison with those of P21 coatings.
机译：在这项工作中，使用热火焰喷涂技术将两种不同的镍基粉末ProXon 21021（P21）和ProXon 21031（P31）喷涂到钢基材35CrMo4上。通过使用X射线衍射（XRD），扫描电子显微镜（SEM）和能量分散光谱（EDS）对粉末和涂层中存在的相的形态和化学组成进行表征。研究了涂层的硬度和耐磨性。 XRD分析表明，涂层中存在的相与初始粉末不同。另外，通过SEM观察到一些不均匀性，例如氧化物，孔隙率和未熔化的颗粒。发现与P21涂层相比，喷涂P31涂层具有更高的显微硬度，更高的耐磨性和显着更低的摩擦系数。

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