Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications

M. Bégard, K. Bobzin, G. Bolelli (Corresponding Author), Arto Hujanen, Pertti Lintunen, D. Lisjak, S. Gyergyek, L. Lusvarghi, M. Pasquale, K. Richardt, T. Schläfer, Tommi Varis

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)

Abstract

Co,Ti-substituted Ba-hexaferrite (BaCoTiFe10O19) coatings for applications as microwave absorbers were deposited by the APS and HVOF techniques, using BaCoTiFe10O19 powders manufactured by solid-state reaction followed by spray-drying. The SEM + EDX, XRD and micro-Raman analyses indicated that impact quenching of molten agglomerates on the substrate hindered the crystallisation of the hexaferrite structure, resulting in poor magnetic properties of the coatings. Adjusted processing conditions enabled the deposition of a coating retaining enough hexaferrite phase, whose magnetic properties, close to bulk BaCoTiFe10O19, are very promising for electromagnetic wave absorption.
Original languageEnglish
Pages (from-to)3312-3319
Number of pages8
JournalSurface and Coatings Technology
Volume203
Issue number20-21
DOIs
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

Electromagnetic wave absorption
Thermal spraying
spraying
electromagnetic radiation
coatings
Coatings
Magnetic properties
magnetic properties
Spray drying
Crystallization
retaining
Solid state reactions
Powders
drying
sprayers
Molten materials
Energy dispersive spectroscopy
Quenching
absorbers
quenching

Keywords

  • Plasma spraying
  • High velocity oxy-fuel spraying
  • Hexaferrite coatings
  • Electromagnetic wave absorbers
  • Metastable phases
  • Magnetic properties
  • ProperPart

Cite this

Bégard, M. ; Bobzin, K. ; Bolelli, G. ; Hujanen, Arto ; Lintunen, Pertti ; Lisjak, D. ; Gyergyek, S. ; Lusvarghi, L. ; Pasquale, M. ; Richardt, K. ; Schläfer, T. ; Varis, Tommi. / Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications. In: Surface and Coatings Technology. 2009 ; Vol. 203, No. 20-21. pp. 3312-3319.
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title = "Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications",
abstract = "Co,Ti-substituted Ba-hexaferrite (BaCoTiFe10O19) coatings for applications as microwave absorbers were deposited by the APS and HVOF techniques, using BaCoTiFe10O19 powders manufactured by solid-state reaction followed by spray-drying. The SEM + EDX, XRD and micro-Raman analyses indicated that impact quenching of molten agglomerates on the substrate hindered the crystallisation of the hexaferrite structure, resulting in poor magnetic properties of the coatings. Adjusted processing conditions enabled the deposition of a coating retaining enough hexaferrite phase, whose magnetic properties, close to bulk BaCoTiFe10O19, are very promising for electromagnetic wave absorption.",
keywords = "Plasma spraying, High velocity oxy-fuel spraying, Hexaferrite coatings, Electromagnetic wave absorbers, Metastable phases, Magnetic properties, ProperPart",
author = "M. B{\'e}gard and K. Bobzin and G. Bolelli and Arto Hujanen and Pertti Lintunen and D. Lisjak and S. Gyergyek and L. Lusvarghi and M. Pasquale and K. Richardt and T. Schl{\"a}fer and Tommi Varis",
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language = "English",
volume = "203",
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Bégard, M, Bobzin, K, Bolelli, G, Hujanen, A, Lintunen, P, Lisjak, D, Gyergyek, S, Lusvarghi, L, Pasquale, M, Richardt, K, Schläfer, T & Varis, T 2009, 'Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications', Surface and Coatings Technology, vol. 203, no. 20-21, pp. 3312-3319. https://doi.org/10.1016/j.surfcoat.2009.04.007

Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications. / Bégard, M.; Bobzin, K.; Bolelli, G. (Corresponding Author); Hujanen, Arto; Lintunen, Pertti; Lisjak, D.; Gyergyek, S.; Lusvarghi, L.; Pasquale, M.; Richardt, K.; Schläfer, T.; Varis, Tommi.

In: Surface and Coatings Technology, Vol. 203, No. 20-21, 2009, p. 3312-3319.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Thermal spraying of Co,Ti-substituted Ba-hexaferrite coatings for electromagnetic wave absorption applications

AU - Bégard, M.

AU - Bobzin, K.

AU - Bolelli, G.

AU - Hujanen, Arto

AU - Lintunen, Pertti

AU - Lisjak, D.

AU - Gyergyek, S.

AU - Lusvarghi, L.

AU - Pasquale, M.

AU - Richardt, K.

AU - Schläfer, T.

AU - Varis, Tommi

PY - 2009

Y1 - 2009

N2 - Co,Ti-substituted Ba-hexaferrite (BaCoTiFe10O19) coatings for applications as microwave absorbers were deposited by the APS and HVOF techniques, using BaCoTiFe10O19 powders manufactured by solid-state reaction followed by spray-drying. The SEM + EDX, XRD and micro-Raman analyses indicated that impact quenching of molten agglomerates on the substrate hindered the crystallisation of the hexaferrite structure, resulting in poor magnetic properties of the coatings. Adjusted processing conditions enabled the deposition of a coating retaining enough hexaferrite phase, whose magnetic properties, close to bulk BaCoTiFe10O19, are very promising for electromagnetic wave absorption.

AB - Co,Ti-substituted Ba-hexaferrite (BaCoTiFe10O19) coatings for applications as microwave absorbers were deposited by the APS and HVOF techniques, using BaCoTiFe10O19 powders manufactured by solid-state reaction followed by spray-drying. The SEM + EDX, XRD and micro-Raman analyses indicated that impact quenching of molten agglomerates on the substrate hindered the crystallisation of the hexaferrite structure, resulting in poor magnetic properties of the coatings. Adjusted processing conditions enabled the deposition of a coating retaining enough hexaferrite phase, whose magnetic properties, close to bulk BaCoTiFe10O19, are very promising for electromagnetic wave absorption.

KW - Plasma spraying

KW - High velocity oxy-fuel spraying

KW - Hexaferrite coatings

KW - Electromagnetic wave absorbers

KW - Metastable phases

KW - Magnetic properties

KW - ProperPart

U2 - 10.1016/j.surfcoat.2009.04.007

DO - 10.1016/j.surfcoat.2009.04.007

M3 - Article

VL - 203

SP - 3312

EP - 3319

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

IS - 20-21

ER -