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Electron Beam Treatments Of Electrophoretic Ceramic Coatings

机译:电泳陶瓷涂层的电子束处理

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In this work a method to densify ceramic coating obtained by electrophoresis and to improve its adhesion to the substrate is proposed. It consists in irradiating the coating surface by electron beam (EB). Alumina and alumina-zirconia coatings were deposited on stainless steel substrates and treated by low power EB. SEM, XRD and TEM characterizations demonstrated that the sintering occurred. Moreover, it is shown that on alumina-zirconia coating the EB irradiation produced a composite material consisting principally of tetragonal zirconia particles immersed in an amorphous alumina matrix. The adhesion stress of EB treated coating was estimated by stud pull test and it was found to be comparable to that of plasma-sprayed coatings.
机译:在这项工作中,提出了一种使通过电泳获得的陶瓷涂层致密化并改善其与基底的粘附性的方法。它包括通过电子束(EB)照射涂层表面。氧化铝和氧化铝-氧化锆涂层沉积在不锈钢基材上,并通过低功率电子束进行处理。 SEM,XRD和TEM表征表明发生了烧结。此外,显示出在氧化铝-氧化锆涂层上,EB辐射产生了复合材料,该复合材料主要由浸渍在无定形氧化铝基质中的四方氧化锆颗粒组成。通过螺柱拉力试验评估了EB处理涂层的附着应力,发现该涂层应力与等离子喷涂涂层相当。

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