Study on the Penetration of Al into Fe-3 %Si Thin Sheet Using PVD Method and Its Application in Preparing Fe-6.5 %(Si+Al) Alloy

DOI

10.2991/ame-17.2017.58How to use a DOI?

Keywords

Fe-6.5 %(Si+Al) alloy; Magnetron-sputtering; Diffusion annealing; Penetration mechanism of Al.

Abstract

Fe-6.5 %Si alloy has excellent soft magnetic properties but is hardly able to being produced by conventional hot–cold rolling processes. It is well known that a small amount of Al adding into Fe-Si alloys is benefit to enhancing the alloy's soft magnetic properties and its working performance. In the present work pure Al layers were deposited onto Fe-3 %Si thin sheets using direct current (DC) magnetron sputtering and followed by diffusion annealing to promote Al penetrating into low-Si steel substrates. Based on the experimental and simulation results, the mechanism of Al penetrated into low-Si steel substrate was subjected to rate-controlling and Si uphill diffusion only occurred under the influence of penetrated Al being gradient distributed. As deposited Al layer's thickness reached to 32 m onto 0.23 mm Fe-3 %Si substrate and followed by a diffusion annealing at 1200 °C for 6 h, Fe-6.5 %(Si+Al) alloy can be achieved. Electron dispersive spectroscopy (EDS) analyses showed that both Si and penetrated Al profiles were evenly distributed along the depth of the prepared Fe-6.5 %(Si+Al) alloy, and the microstructure was also uniform and density. The resistivity of Fe-6.5 % (Si+Al) alloy was close to that of Fe-6.5 %Si alloy, but the working performance of the former was observed evidently better than the latter.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Guang-Ke Tian
AU  - Jie Ren
AU  - Tian-Guo Ma
PY  - 2017/04
DA  - 2017/04
TI  - Study on the Penetration of Al into Fe-3 %Si Thin Sheet Using PVD Method and Its Application in Preparing Fe-6.5 %(Si+Al) Alloy
BT  - Proceedings of the 3rd Annual International Conference on Advanced Material Engineering (AME 2017)
PB  - Atlantis Press
SP  - 350
EP  - 357
SN  - 2352-5401
UR  - https://doi.org/10.2991/ame-17.2017.58
DO  - 10.2991/ame-17.2017.58
ID  - Tian2017/04
ER  -