首页> 外文期刊>Journal of Thermal Spray Technology >Erosion, Abrasive, and Friction Wear Behavior of Iron Aluminide Coatings Sprayed by HVOF
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Erosion, Abrasive, and Friction Wear Behavior of Iron Aluminide Coatings Sprayed by HVOF

机译:HVOF喷涂的铝化铁涂层的冲蚀,磨蚀和摩擦磨损行为

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摘要

Iron aluminides have been proposed lately as promising materials for wear applications. Many authors have focused their investigations on the friction behavior of FeAl coatings, emphasizing the role of this intermetallic phase as a new matrix to embed ceramic particles and replace the extensively studied WC-Co cermet system for high temperature. However, few of these studies deal with the evaluation of the different tribological properties and their relationship with the coating microstructure. In the present study, the near stoichometric Fe40Al was successfully sprayed by means of high velocity oxy-fuel using different particle size distribution and the tribological behavior was assessed through solid particle erosion, abrasive and dry sliding tests. The wear mechanisms of the deposited coatings are discussed with regard to the observed results. In addition, oxidized samples were tested to evaluate the role of the oxide top layer; also, the powder was previously annealed to produce a coating with an almost fully ordered FeAl structure.
机译:铝铁化物最近已被提出作为用于磨损应用的有前途的材料。许多作者将研究重点放在了FeAl涂层的摩擦性能上,强调了这种金属间相作为嵌入陶瓷颗粒并替代高温研究的WC-Co金属陶瓷体系的新基质的作用。然而,这些研究很少涉及对不同摩擦学性质及其与涂层微观结构的关系的评估。在本研究中,采用不同粒径分布的高速含氧燃料成功地喷射了接近化学计量的Fe40Al,并通过固体颗粒腐蚀,磨蚀和干滑试验评估了摩擦学行为。关于所观察到的结果讨论了沉积涂层的磨损机理。另外,测试了氧化的样品以评估氧化物顶层的作用。同样,将粉末预先退火以产生具有几乎完全有序的FeAl结构的涂层。

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