On the dielectric strengths of atmospheric plasma sprayed Al2O3, Y2O3, ZrO2–7% Y2O3 and (Ba,Sr)TiO3 coatings

Jiri Kotlan; Ramachandran Chidambaram Seshadri; Sanjay Sampath; Pavel Ctibor; Zdenek Pala; Radek Musalek

doi:10.1016/j.ceramint.2015.05.066

On the dielectric strengths of atmospheric plasma sprayed Al₂O₃, Y₂O₃, ZrO₂–7% Y₂O₃ and (Ba,Sr)TiO₃ coatings

Jiri Kotlan
, Ramachandran Chidambaram Seshadri
, Sanjay Sampath
, Pavel Ctibor
, Zdenek Pala
, Radek Musalek

Materials Science and Engineering

Czech Academy of Sciences
Czech Technical University in Prague
Stony Brook University

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

40 Scopus citations

Abstract

In article an attempt has been made to investigate the dielectric strengths of selected ceramic coatings namely alumina (Al₂O₃), yttria (Y₂O₃), YSZ (ZrO₂–7% Y₂O₃) and ferroelectric BST (Ba_0.68Sr_0.32TiO₃) deposited using a atmospheric plasma spray process. Samples of each material were deposited under three different spray distances. The hardness, moduli of elasticity, dielectric strengths of the deposits were evaluated. The microstructures and phases were analyzed using optical microscopy and X-ray diffraction analysis respectively. The results show the significant influence of spray distance on dielectric strengths of the coatings. The dielectric strengths as per hierarchy are 17.3±1.0 kV/mm for yttria, 16.6±1.8 kV/mm for alumina, 11.1±1.5 kV/mm for YSZ and 7.8±0.8 kV/mm for BST. The particles temperature and velocity during spraying were analyzed in order to find relation between process parameters and dielectric strengths. Correlation between crystallinity of deposited BST and dielectric strength was found in this study.

Original language	English
Pages (from-to)	11169-11176
Number of pages	8
Journal	Ceramics International
Volume	41
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2015.05.066
State	Published - Nov 2015

Keywords

B. Grain size
B. X-ray methods
C. Electrical properties
Dielectric strength
E. Insulators

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10.1016/j.ceramint.2015.05.066

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@article{c1e4c91afac14b6eabbe8e5b9b9b7ee2,

title = "On the dielectric strengths of atmospheric plasma sprayed Al2O3, Y2O3, ZrO2–7\% Y2O3 and (Ba,Sr)TiO3 coatings",

abstract = "In article an attempt has been made to investigate the dielectric strengths of selected ceramic coatings namely alumina (Al2O3), yttria (Y2O3), YSZ (ZrO2–7\% Y2O3) and ferroelectric BST (Ba0.68Sr0.32TiO3) deposited using a atmospheric plasma spray process. Samples of each material were deposited under three different spray distances. The hardness, moduli of elasticity, dielectric strengths of the deposits were evaluated. The microstructures and phases were analyzed using optical microscopy and X-ray diffraction analysis respectively. The results show the significant influence of spray distance on dielectric strengths of the coatings. The dielectric strengths as per hierarchy are 17.3±1.0 kV/mm for yttria, 16.6±1.8 kV/mm for alumina, 11.1±1.5 kV/mm for YSZ and 7.8±0.8 kV/mm for BST. The particles temperature and velocity during spraying were analyzed in order to find relation between process parameters and dielectric strengths. Correlation between crystallinity of deposited BST and dielectric strength was found in this study.",

keywords = "B. Grain size, B. X-ray methods, C. Electrical properties, Dielectric strength, E. Insulators",

author = "Jiri Kotlan and Seshadri, \{Ramachandran Chidambaram\} and Sanjay Sampath and Pavel Ctibor and Zdenek Pala and Radek Musalek",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd and Techna Group S.r.l.",

year = "2015",

month = nov,

doi = "10.1016/j.ceramint.2015.05.066",

language = "English",

volume = "41",

pages = "11169--11176",

journal = "Ceramics International",

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T1 - On the dielectric strengths of atmospheric plasma sprayed Al2O3, Y2O3, ZrO2–7% Y2O3 and (Ba,Sr)TiO3 coatings

AU - Kotlan, Jiri

AU - Seshadri, Ramachandran Chidambaram

AU - Sampath, Sanjay

AU - Ctibor, Pavel

AU - Pala, Zdenek

AU - Musalek, Radek

PY - 2015/11

Y1 - 2015/11

N2 - In article an attempt has been made to investigate the dielectric strengths of selected ceramic coatings namely alumina (Al2O3), yttria (Y2O3), YSZ (ZrO2–7% Y2O3) and ferroelectric BST (Ba0.68Sr0.32TiO3) deposited using a atmospheric plasma spray process. Samples of each material were deposited under three different spray distances. The hardness, moduli of elasticity, dielectric strengths of the deposits were evaluated. The microstructures and phases were analyzed using optical microscopy and X-ray diffraction analysis respectively. The results show the significant influence of spray distance on dielectric strengths of the coatings. The dielectric strengths as per hierarchy are 17.3±1.0 kV/mm for yttria, 16.6±1.8 kV/mm for alumina, 11.1±1.5 kV/mm for YSZ and 7.8±0.8 kV/mm for BST. The particles temperature and velocity during spraying were analyzed in order to find relation between process parameters and dielectric strengths. Correlation between crystallinity of deposited BST and dielectric strength was found in this study.

AB - In article an attempt has been made to investigate the dielectric strengths of selected ceramic coatings namely alumina (Al2O3), yttria (Y2O3), YSZ (ZrO2–7% Y2O3) and ferroelectric BST (Ba0.68Sr0.32TiO3) deposited using a atmospheric plasma spray process. Samples of each material were deposited under three different spray distances. The hardness, moduli of elasticity, dielectric strengths of the deposits were evaluated. The microstructures and phases were analyzed using optical microscopy and X-ray diffraction analysis respectively. The results show the significant influence of spray distance on dielectric strengths of the coatings. The dielectric strengths as per hierarchy are 17.3±1.0 kV/mm for yttria, 16.6±1.8 kV/mm for alumina, 11.1±1.5 kV/mm for YSZ and 7.8±0.8 kV/mm for BST. The particles temperature and velocity during spraying were analyzed in order to find relation between process parameters and dielectric strengths. Correlation between crystallinity of deposited BST and dielectric strength was found in this study.

KW - B. Grain size

KW - B. X-ray methods

KW - C. Electrical properties

KW - Dielectric strength

KW - E. Insulators

UR - https://www.scopus.com/pages/publications/84930033917

U2 - 10.1016/j.ceramint.2015.05.066

DO - 10.1016/j.ceramint.2015.05.066

M3 - Article

AN - SCOPUS:84930033917

SN - 0272-8842

VL - 41

SP - 11169

EP - 11176

JO - Ceramics International

JF - Ceramics International

IS - 9

ER -

On the dielectric strengths of atmospheric plasma sprayed Al₂O₃, Y₂O₃, ZrO₂–7% Y₂O₃ and (Ba,Sr)TiO₃ coatings

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Keywords

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