Preparation of barium hexaferrite coatings using atmospheric plasma spraying

Darja Lisjak; Kirsten Bobzin; Katharina Richardt; Marion Bégard; Giovanni Bolelli; Luca Lusvarghi; Arto Hujanen; Pertti Lintunen; Massimo Pasquale; Elena Olivetti; Miha Drofenik; Thomas Schläfer

doi:10.1016/j.jeurceramsoc.2009.01.028

Preparation of barium hexaferrite coatings using atmospheric plasma spraying

Darja Lisjak^*
, Kirsten Bobzin
, Katharina Richardt
, Marion Bégard
, Giovanni Bolelli
, Luca Lusvarghi
, Arto Hujanen
, Pertti Lintunen
, Massimo Pasquale
, Elena Olivetti
, Miha Drofenik
, Thomas Schläfer

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

39 Citations (Scopus)

Abstract

Thick coatings of barium hexaferrite with the compositions BaFe₁₂O₁₉ and BaCoTiFe₁₀O₁₉ were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited coatings were poorly crystallized, but their crystallinity was improved with a subsequent annealing. The crystallization mechanism of the sprayed hexaferrites was studied during annealing up to 1300 °C, using X-ray powder diffraction combined with thermal analysis and with electron microscopy including microanalysis. Single-phase coatings were obtained after annealing treatments at 1100–1300 °C. Their magnetic properties showed that they would be suitable for absorbers at microwave and mm-wave frequencies, depending on the coating phase's composition, the crystallinity and the thicknesses.

Original language	English
Pages (from-to)	2333-2341
Journal	Journal of the European Ceramic Society
Volume	29
Issue number	11
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2009.01.028
Publication status	Published - 2009
MoE publication type	A1 Journal article-refereed

Keywords

Ferrites
thermal spraying
solid-state reaction
magnetic properties
dielectric properties

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10.1016/j.jeurceramsoc.2009.01.028

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title = "Preparation of barium hexaferrite coatings using atmospheric plasma spraying",

abstract = "Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited coatings were poorly crystallized, but their crystallinity was improved with a subsequent annealing. The crystallization mechanism of the sprayed hexaferrites was studied during annealing up to 1300 °C, using X-ray powder diffraction combined with thermal analysis and with electron microscopy including microanalysis. Single-phase coatings were obtained after annealing treatments at 1100–1300 °C. Their magnetic properties showed that they would be suitable for absorbers at microwave and mm-wave frequencies, depending on the coating phase's composition, the crystallinity and the thicknesses.",

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author = "Darja Lisjak and Kirsten Bobzin and Katharina Richardt and Marion B{\'e}gard and Giovanni Bolelli and Luca Lusvarghi and Arto Hujanen and Pertti Lintunen and Massimo Pasquale and Elena Olivetti and Miha Drofenik and Thomas Schl{\"a}fer",

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doi = "10.1016/j.jeurceramsoc.2009.01.028",

language = "English",

volume = "29",

pages = "2333--2341",

journal = "Journal of the European Ceramic Society",

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TY - JOUR

T1 - Preparation of barium hexaferrite coatings using atmospheric plasma spraying

AU - Lisjak, Darja

AU - Bobzin, Kirsten

AU - Richardt, Katharina

AU - Bégard, Marion

AU - Bolelli, Giovanni

AU - Lusvarghi, Luca

AU - Hujanen, Arto

AU - Lintunen, Pertti

AU - Pasquale, Massimo

AU - Olivetti, Elena

AU - Drofenik, Miha

AU - Schläfer, Thomas

PY - 2009

Y1 - 2009

N2 - Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited coatings were poorly crystallized, but their crystallinity was improved with a subsequent annealing. The crystallization mechanism of the sprayed hexaferrites was studied during annealing up to 1300 °C, using X-ray powder diffraction combined with thermal analysis and with electron microscopy including microanalysis. Single-phase coatings were obtained after annealing treatments at 1100–1300 °C. Their magnetic properties showed that they would be suitable for absorbers at microwave and mm-wave frequencies, depending on the coating phase's composition, the crystallinity and the thicknesses.

AB - Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited coatings were poorly crystallized, but their crystallinity was improved with a subsequent annealing. The crystallization mechanism of the sprayed hexaferrites was studied during annealing up to 1300 °C, using X-ray powder diffraction combined with thermal analysis and with electron microscopy including microanalysis. Single-phase coatings were obtained after annealing treatments at 1100–1300 °C. Their magnetic properties showed that they would be suitable for absorbers at microwave and mm-wave frequencies, depending on the coating phase's composition, the crystallinity and the thicknesses.

KW - Ferrites

KW - thermal spraying

KW - solid-state reaction

KW - magnetic properties

KW - dielectric properties

U2 - 10.1016/j.jeurceramsoc.2009.01.028

DO - 10.1016/j.jeurceramsoc.2009.01.028

M3 - Article

SN - 0955-2219

VL - 29

SP - 2333

EP - 2341

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 11

ER -

Preparation of barium hexaferrite coatings using atmospheric plasma spraying

Abstract

Keywords

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