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High-Velocity Arc Spraying of Fe-based Metallic Glasses with High Si Content
Journal of Thermal Spray Technology ( IF 3.1 ) Pub Date : 2022-06-27 , DOI: 10.1007/s11666-022-01433-w
K. Bobzin , W. Wietheger , E. Burbaum , L. M. Johann

Various feedstocks are available for the thermal spraying of metallic glasses, which are often alloyed with high amounts of cost-intensive elements. In previous steps, a novel, economic Fe-based metallic glass alloy with a high Si content has been developed using melt spinning. The aim of this work is to investigate the application of the alloy using the high-velocity arc spraying (HVAS) process. On this basis, four cored wires are manufactured with the aim of maximizing in situ intermixing and amorphous phase formation during the spraying process. The cross sections of the resulting coatings are analyzed by light microscopy, scanning electron microscopy and Vickers hardness testing. Phase analysis on the coatings is conducted with regards to the formation of amorphous phases using x-ray diffractometry (XRD) and differential scanning calorimetry. The XRD patterns indicate a mixture of (nano-) crystalline ferrite and amorphous phases. In particular, the coating manufactured with wire No. 1, a Fe-B-Si-C-Nb composition, exhibited good intermixing and a highly amorphous structure. This work demonstrates that glassy metallic coatings can be produced by means of HVAS using Fe-based cored wires comprising of conventional filler materials. A successful intermixing, in situ alloying and the subsequent formation of amorphous phases is achieved.



中文翻译:

高硅含量铁基金属玻璃的高速电弧喷涂

有多种原料可用于金属玻璃的热喷涂,这些原料通常与大量成本密集型元素形成合金。在之前的步骤中,已经使用熔体纺丝开发了一种新型、经济的高硅含量铁基金属玻璃合金。这项工作的目的是研究使用高速电弧喷涂 (HVAS) 工艺的合金的应用。在此基础上,制造了四根包芯线,目的是在喷涂过程中最大限度地进行原位混合和非晶相的形成。通过光学显微镜、扫描电子显微镜和维氏硬度测试分析所得涂层的横截面。使用 X 射线衍射 (XRD) 和差示扫描量热法对涂层进行关于非晶相形成的相分析。XRD 图案表明(纳米)结晶铁氧体和非晶相的混合物。特别是,用 1 号线(Fe-B-Si-C-Nb 组合物)制造的涂层表现出良好的混合和高度非晶态结构。这项工作表明,玻璃金属涂层可以通过 HVAS 使用由传统填充材料组成的铁基芯线来生产。实现了成功的混合、原位合金化和随后形成非晶相。这项工作表明,玻璃金属涂层可以通过 HVAS 使用由传统填充材料组成的铁基芯线来生产。实现了成功的混合、原位合金化和随后形成非晶相。这项工作表明,玻璃金属涂层可以通过 HVAS 使用由传统填充材料组成的铁基芯线来生产。实现了成功的混合、原位合金化和随后形成非晶相。

更新日期:2022-06-28
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