Magnetic phase formation in CoTi-substituted Ba hexaferrite coatings prepared with atmospheric plasma spraying

D. Lisjak (Corresponding Author), G. Bolelli, L. Lusvarghi, M. Bégard, M. Bruehl, K. Bobzin, Pertti Lintunen, Ulla Kanerva, M. Pasquale, M. Drofenik

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Thick coatings of CoTi‐substituted Ba hexaferrite with the nominal composition BaCoTiFe10O19 were prepared using atmospheric plasma‐spraying technology. The coatings were prepared from prereacted powders of the desired composition. The as‐deposited coatings showed a high degree of crystallinity. A detailed investigation of the coatings' phase compositions was conducted with micro‐Raman spectroscopy and energy‐dispersive X‐ray spectroscopy. Two magnetic ferrite phases, CoTi‐substituted Ba hexaferrite and Co ferrite, were identified in the coatings. An X‐ray powder‐diffraction analysis and a quantitative structural analysis based on Rietveld refinement showed that the mass ratio of the two phases and their chemical composition varied with respect to the spraying parameters. Consequently, the static and microwave magnetic properties of the as‐sprayed coatings also varied. We were able to explain the formation of the two ferrite phases based on the interplay between the partial melting of the feedstock powder and the recrystallization kinetics.
Original languageEnglish
Pages (from-to)2579-2584
Number of pages6
JournalJournal of the American Ceramic Society
Volume93
Issue number9
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

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Plasma spraying
Coatings
Ferrite
Powders
Chemical analysis
Spectroscopy
Rietveld refinement
Spraying
Phase composition
Structural analysis
Feedstocks
Magnetic properties
Melting
Microwaves
Kinetics

Keywords

  • ProperPart

Cite this

Lisjak, D. ; Bolelli, G. ; Lusvarghi, L. ; Bégard, M. ; Bruehl, M. ; Bobzin, K. ; Lintunen, Pertti ; Kanerva, Ulla ; Pasquale, M. ; Drofenik, M. / Magnetic phase formation in CoTi-substituted Ba hexaferrite coatings prepared with atmospheric plasma spraying. In: Journal of the American Ceramic Society. 2010 ; Vol. 93, No. 9. pp. 2579-2584.
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abstract = "Thick coatings of CoTi‐substituted Ba hexaferrite with the nominal composition BaCoTiFe10O19 were prepared using atmospheric plasma‐spraying technology. The coatings were prepared from prereacted powders of the desired composition. The as‐deposited coatings showed a high degree of crystallinity. A detailed investigation of the coatings' phase compositions was conducted with micro‐Raman spectroscopy and energy‐dispersive X‐ray spectroscopy. Two magnetic ferrite phases, CoTi‐substituted Ba hexaferrite and Co ferrite, were identified in the coatings. An X‐ray powder‐diffraction analysis and a quantitative structural analysis based on Rietveld refinement showed that the mass ratio of the two phases and their chemical composition varied with respect to the spraying parameters. Consequently, the static and microwave magnetic properties of the as‐sprayed coatings also varied. We were able to explain the formation of the two ferrite phases based on the interplay between the partial melting of the feedstock powder and the recrystallization kinetics.",
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Lisjak, D, Bolelli, G, Lusvarghi, L, Bégard, M, Bruehl, M, Bobzin, K, Lintunen, P, Kanerva, U, Pasquale, M & Drofenik, M 2010, 'Magnetic phase formation in CoTi-substituted Ba hexaferrite coatings prepared with atmospheric plasma spraying', Journal of the American Ceramic Society, vol. 93, no. 9, pp. 2579-2584. https://doi.org/10.1111/j.1551-2916.2010.03770.x

Magnetic phase formation in CoTi-substituted Ba hexaferrite coatings prepared with atmospheric plasma spraying. / Lisjak, D. (Corresponding Author); Bolelli, G.; Lusvarghi, L.; Bégard, M.; Bruehl, M.; Bobzin, K.; Lintunen, Pertti; Kanerva, Ulla; Pasquale, M.; Drofenik, M.

In: Journal of the American Ceramic Society, Vol. 93, No. 9, 2010, p. 2579-2584.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Magnetic phase formation in CoTi-substituted Ba hexaferrite coatings prepared with atmospheric plasma spraying

AU - Lisjak, D.

AU - Bolelli, G.

AU - Lusvarghi, L.

AU - Bégard, M.

AU - Bruehl, M.

AU - Bobzin, K.

AU - Lintunen, Pertti

AU - Kanerva, Ulla

AU - Pasquale, M.

AU - Drofenik, M.

PY - 2010

Y1 - 2010

N2 - Thick coatings of CoTi‐substituted Ba hexaferrite with the nominal composition BaCoTiFe10O19 were prepared using atmospheric plasma‐spraying technology. The coatings were prepared from prereacted powders of the desired composition. The as‐deposited coatings showed a high degree of crystallinity. A detailed investigation of the coatings' phase compositions was conducted with micro‐Raman spectroscopy and energy‐dispersive X‐ray spectroscopy. Two magnetic ferrite phases, CoTi‐substituted Ba hexaferrite and Co ferrite, were identified in the coatings. An X‐ray powder‐diffraction analysis and a quantitative structural analysis based on Rietveld refinement showed that the mass ratio of the two phases and their chemical composition varied with respect to the spraying parameters. Consequently, the static and microwave magnetic properties of the as‐sprayed coatings also varied. We were able to explain the formation of the two ferrite phases based on the interplay between the partial melting of the feedstock powder and the recrystallization kinetics.

AB - Thick coatings of CoTi‐substituted Ba hexaferrite with the nominal composition BaCoTiFe10O19 were prepared using atmospheric plasma‐spraying technology. The coatings were prepared from prereacted powders of the desired composition. The as‐deposited coatings showed a high degree of crystallinity. A detailed investigation of the coatings' phase compositions was conducted with micro‐Raman spectroscopy and energy‐dispersive X‐ray spectroscopy. Two magnetic ferrite phases, CoTi‐substituted Ba hexaferrite and Co ferrite, were identified in the coatings. An X‐ray powder‐diffraction analysis and a quantitative structural analysis based on Rietveld refinement showed that the mass ratio of the two phases and their chemical composition varied with respect to the spraying parameters. Consequently, the static and microwave magnetic properties of the as‐sprayed coatings also varied. We were able to explain the formation of the two ferrite phases based on the interplay between the partial melting of the feedstock powder and the recrystallization kinetics.

KW - ProperPart

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DO - 10.1111/j.1551-2916.2010.03770.x

M3 - Article

VL - 93

SP - 2579

EP - 2584

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

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ER -