Article history: Fe@AlPO core-shell composites with tunable AlPO content have been successfully prepared through 4 4 Received 11 May 2017 in situ deposition of AlPO on the surface of carbonyl iron. The presence of the AlPO layer improves 4 4 Received in revised form 2 August 2017 the anti-oxidative ability of the internal carbonyl iron, so that surface oxidation and magnetic degra- Accepted 3 August 2017 dation in these composites are signiﬁcantly suppressed when compared with naked carbonyl iron. It is Available online 12 August 2017 worth noting that the AlPO layer can affect the electromagnetic parameters of carbonyl iron, result- ing in well-matched characteristic impedance. By optimizing the AlPO layer content, the Fe@AlPO 4 4 Keywords: composite can display excellent reﬂection loss characteristics, and qualiﬁed absorption in a very broad Carbonyl iron frequency range (2.4–18.0 GHz over −10 dB) can be achieved. The microwave absorption performance of Composite the Fe@AlPO composite is indeed superior to pure carbonyl iron as well as many previously reported car- AlPO layer bonyl iron-based composites. More importantly, the Fe@AlPO composite can maintain good microwave Microwave absorption 4 Anti-oxidative ability absorption properties after treatment at high temperature for long time periods. These results provide
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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