Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

Minna Niittymäki; Jarkko Metsäjoki; Tomi Suhonen; Kari Lahti

doi:10.1109/ICPADM.2015.7295318

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

Minna Niittymäki
, Jarkko Metsäjoki
, Tomi Suhonen
, Kari Lahti

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

9 Citations (Scopus)

26 Downloads (Pure)

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
Pages	500-503
Number of pages	4
ISBN (Print)	978-1-4799-8903-4
DOIs	https://doi.org/10.1109/ICPADM.2015.7295318
Publication status	Published - 2015
Publication type	A4 Article in conference proceedings
Event	International Conference on the Properties and Applications of Dielectric Materials - , United States Duration: 1 Jan 2000 → …

Conference

Conference	International Conference on the Properties and Applications of Dielectric Materials
Country/Territory	United States
Period	1/01/00 → …

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10.1109/ICPADM.2015.7295318

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Accepted author manuscript, 296 KB

http://urn.fi/URN:NBN:fi:tty-201812052812

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Lahti, K. (Contact)
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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.",

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doi = "10.1109/ICPADM.2015.7295318",

language = "English",

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Niittymäki, M, Metsäjoki, J, Suhonen, T & Lahti, K 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, pp. 500-503, International Conference on the Properties and Applications of Dielectric Materials, United States, 1/01/00. https://doi.org/10.1109/ICPADM.2015.7295318

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings. / Niittymäki, Minna; Metsäjoki, Jarkko; Suhonen, Tomi et al.
2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM) . IEEE, 2015. p. 500-503.

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

TY - GEN

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

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AU - Suhonen, Tomi

AU - Lahti, Kari

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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.

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DO - 10.1109/ICPADM.2015.7295318

M3 - Conference contribution

SN - 978-1-4799-8903-4

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

PB - IEEE

T2 - International Conference on the Properties and Applications of Dielectric Materials

Y2 - 1 January 2000

ER -

Electric field dependency of dielectric behavior of thermally sprayed ceramic coatings

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