Hexaferrite/polyethylene composite coatings prepared with flame spraying

Composite coatings from different volume ratios of hexaferrite (BaFe 12O 19 or SrFe 12O 19) and polyethylene were prepared, for the first time, with flame spraying. The hexaferrite phase retained its crystal structure and microstructure during the process, while the polyethylene melted and resolidified. The coatings showed magnetic hysteresis loops with high coercivities. The measured electromagnetic behaviour proved that the studied composite coatings would be suitable for electromagnetic wave absorbers in the U-band.