Chmielewski Tomasz, Chmielewski Marcin, Piątkowska Anna, Grabias Agnieszka, Skowrońska Beata, Siwek Piotr
Institute of Manufacturing Technologies, Warsaw University of Technology, Narbutta Str. 85, 02-524 Warsaw, Poland.
Łukasiewicz Research Network-Institute of Microelectronics and Photonics, Al. Lotników 32/46, 02-668 Warsaw, Poland.
Materials (Basel). 2021 Jun 10;14(12):3210. doi: 10.3390/ma14123210.
The article presents the results of research on the structural evolution of the composite Fe-Al-based coating deposited by arc spray with initial low participation of in situ intermetallic phases. The arc spraying process was carried out by simultaneously melting two different electrode wires, aluminum and low alloy steel (98.6 wt.% of Fe). The aim of the research was to reach protective coatings with a composite structure consisting of a significant participation of FeAl as intermetallic phases reinforcement. Initially, synthesis of intermetallic phases took place in situ during the spraying process. In the next step, participation of FeAl fraction was increased through the annealing process, with three temperature values, 700 °C, 800 °C, and 900 °C. Phase structure evolution of the Fe-Al arc-sprayed coating, stimulated by annealing, has been described by means of SEM images taken with a QBSD backscattered electron detector and by XRD and conversion electron Mössbauer spectroscopy (CEMS) investigations. Microhardness distribution of the investigated annealed coatings has been presented.
本文介绍了对电弧喷涂制备的铁铝基复合涂层结构演变的研究结果,该涂层初始时原位金属间相的参与度较低。电弧喷涂过程是通过同时熔化两种不同的电极丝,即铝丝和低合金钢(铁含量为98.6 wt.%)来进行的。该研究的目的是获得具有复合结构的防护涂层,其中FeAl作为金属间相增强相的占比显著。最初,金属间相在喷涂过程中原位合成。在下一步中,通过退火过程提高FeAl相的占比,退火温度分别为700°C、800°C和900°C。借助配备QBSD背散射电子探测器拍摄的SEM图像以及XRD和转换电子穆斯堡尔谱(CEMS)研究,描述了退火对铁铝电弧喷涂涂层相结构演变的影响。文中还给出了所研究的退火涂层的显微硬度分布情况。