Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

M. Niittymäki; Kari Lahti; Tomi Suhonen; Jarkko Metsäjoki

doi:10.1109/ICPADM.2015.7295318

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

M. Niittymäki
, Kari Lahti
, Tomi Suhonen
, Jarkko Metsäjoki

Tampere University of Technology (TUT)

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

9 Citations (Scopus)

Abstract

High temperature applications e.g. fuel cells require ceramic based insulation solutions instead of polymers. The aim of this paper was to characterize the dielectric properties of thermally sprayed ceramic coatings; especially the electric field dependency of AC and DC behavior of thermally sprayed ceramic coatings. One of the spinel samples and one of the alumina samples have quite similar lamellar microstructure which may partly explain their similar type of behavior in DC resistivity as well as in AC loss indexes at low frequencies. These two samples had smaller lamellar size than the other alumina and spinel samples which also had quite similar behavior of AC losses at low frequencies, respectively. In addition to the lamellar size and structure, also micro cracks in the coating microstructure are proposed to have an effect on the dielectric behavior and its electric field dependency.

Original language	English
Title of host publication	2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	500-503
ISBN (Electronic)	978-1-4799-8903-4, 978-1-4799-8902-7
DOIs	https://doi.org/10.1109/ICPADM.2015.7295318
Publication status	Published - 2015
MoE publication type	A4 Article in a conference publication
Event	IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015 - Sydney, Australia Duration: 19 Jul 2015 → 22 Jul 2015 Conference number: 11

Conference

Conference	IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015
Abbreviated title	ICPADM 2015
Country/Territory	Australia
City	Sydney
Period	19/07/15 → 22/07/15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

alumina
breakdown
ceramic
coating
dc conductivity
dielectric spectroscopy
HVOF
loss index
resistivity
spinel
thermal spraying
ProperPart
ProperTune

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10.1109/ICPADM.2015.7295318

Cite this

Niittymäki, M., Lahti, K., Suhonen, T., & Metsäjoki, J. (2015). Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings. In 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM) (pp. 500-503). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ICPADM.2015.7295318

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title = "Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings",

abstract = "High temperature applications e.g. fuel cells require ceramic based insulation solutions instead of polymers. The aim of this paper was to characterize the dielectric properties of thermally sprayed ceramic coatings; especially the electric field dependency of AC and DC behavior of thermally sprayed ceramic coatings. One of the spinel samples and one of the alumina samples have quite similar lamellar microstructure which may partly explain their similar type of behavior in DC resistivity as well as in AC loss indexes at low frequencies. These two samples had smaller lamellar size than the other alumina and spinel samples which also had quite similar behavior of AC losses at low frequencies, respectively. In addition to the lamellar size and structure, also micro cracks in the coating microstructure are proposed to have an effect on the dielectric behavior and its electric field dependency.",

keywords = "alumina, breakdown, ceramic, coating, dc conductivity, dielectric spectroscopy, HVOF, loss index, resistivity, spinel, thermal spraying, ProperPart, ProperTune",

author = "M. Niittym{\"a}ki and Kari Lahti and Tomi Suhonen and Jarkko Mets{\"a}joki",

year = "2015",

doi = "10.1109/ICPADM.2015.7295318",

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booktitle = "2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

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note = "IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, ICPADM 2015 ; Conference date: 19-07-2015 Through 22-07-2015",

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Niittymäki, M, Lahti, K, Suhonen, T & Metsäjoki, J 2015, Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings. in 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM). IEEE Institute of Electrical and Electronic Engineers, pp. 500-503, IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015, Sydney, Tasmania, Australia, 19/07/15. https://doi.org/10.1109/ICPADM.2015.7295318

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings. / Niittymäki, M.; Lahti, Kari; Suhonen, Tomi et al.
2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM). IEEE Institute of Electrical and Electronic Engineers, 2015. p. 500-503.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

AU - Niittymäki, M.

AU - Lahti, Kari

AU - Suhonen, Tomi

AU - Metsäjoki, Jarkko

N1 - Conference code: 11

PY - 2015

Y1 - 2015

N2 - High temperature applications e.g. fuel cells require ceramic based insulation solutions instead of polymers. The aim of this paper was to characterize the dielectric properties of thermally sprayed ceramic coatings; especially the electric field dependency of AC and DC behavior of thermally sprayed ceramic coatings. One of the spinel samples and one of the alumina samples have quite similar lamellar microstructure which may partly explain their similar type of behavior in DC resistivity as well as in AC loss indexes at low frequencies. These two samples had smaller lamellar size than the other alumina and spinel samples which also had quite similar behavior of AC losses at low frequencies, respectively. In addition to the lamellar size and structure, also micro cracks in the coating microstructure are proposed to have an effect on the dielectric behavior and its electric field dependency.

AB - High temperature applications e.g. fuel cells require ceramic based insulation solutions instead of polymers. The aim of this paper was to characterize the dielectric properties of thermally sprayed ceramic coatings; especially the electric field dependency of AC and DC behavior of thermally sprayed ceramic coatings. One of the spinel samples and one of the alumina samples have quite similar lamellar microstructure which may partly explain their similar type of behavior in DC resistivity as well as in AC loss indexes at low frequencies. These two samples had smaller lamellar size than the other alumina and spinel samples which also had quite similar behavior of AC losses at low frequencies, respectively. In addition to the lamellar size and structure, also micro cracks in the coating microstructure are proposed to have an effect on the dielectric behavior and its electric field dependency.

KW - alumina

KW - breakdown

KW - ceramic

KW - coating

KW - dc conductivity

KW - dielectric spectroscopy

KW - HVOF

KW - loss index

KW - resistivity

KW - spinel

KW - thermal spraying

KW - ProperPart

KW - ProperTune

U2 - 10.1109/ICPADM.2015.7295318

DO - 10.1109/ICPADM.2015.7295318

M3 - Conference article in proceedings

SP - 500

EP - 503

BT - 2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - IEEE 11th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2015

Y2 - 19 July 2015 through 22 July 2015

ER -

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

Abstract

Conference

UN SDGs

Keywords

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