Comparative Study of the Electrical Properties and Characteristics of Thermally Sprayed Alumina and Spinel Coatings

被引：53

作者：

Toma, Filofteia-Laura ^{[1
]}

Scheitz, Stefan ^{[1
]}

Berger, Lutz-Michael ^{[1
]}

Sauchuk, Viktar ^{[2
]}

Kusnezoff, Mihails ^{[2
]}

Thiele, Sven ^{[2
]}

机构：

[1] Fraunhofer Inst Mat & Beam Technol Fh IWS, D-01277 Dresden, Germany

[2] Fraunhofer Inst Ceram Technol & Syst Fh IKTS, D-01277 Dresden, Germany

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2011年 / 20卷 / 1-2期

关键词：

Al2O3; dielectric strength; electrical resistivity; insulating properties; microstructure; phase composition; spinel (MgAl2O4); water vapor sorption; ALPHA-ALUMINA; HUMIDITY; POWDERS; WATER;

D O I：

10.1007/s11666-010-9580-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, APS and HVOF processes have been used to prepare alumina (Al2O3) and magnesium spinel (MgAl2O4) coatings designed for insulating applications. The electrical characteristics, i.e., dielectric strength and electrical resistance (electrical resistivity) were investigated using different methods: dielectric breakdown test, direct current (DC) measurements, and electrochemical impedance spectroscopy (EIS). The electrical resistance was measured at room temperature at different relative humidity (RH) levels (from 6% RH to 95% RH) as well as at 200 A degrees C. The coating microstructure, phase composition, and water vapor sorption were studied. Differences in the electrical insulating properties due to the different coating system characteristics are discussed. Of the coatings and conditions investigated in this study, the HVOF spinel coatings showed superior dielectric breakdown strength and electrical resistance stability at high humidity levels.

引用

页码：195 / 204

页数：10

共 50 条

[1] Comparative Study of the Electrical Properties and Characteristics of Thermally Sprayed Alumina and Spinel Coatings
Filofteia-Laura Toma
Stefan Scheitz
Lutz-Michael Berger
Viktar Sauchuk
Mihails Kusnezoff
Sven Thiele
[J]. Journal of Thermal Spray Technology, 2011, 20 : 195 - 204
[2] A comparative study on thermally sprayed alumina based ceramic coatings
Abdel-Samad, AA
El-Bahloul, AMM
Lugscheider, E
Rassoul, SA
[J]. JOURNAL OF MATERIALS SCIENCE, 2000, 35 (12) : 3127 - 3130
[3] A comparative study on thermally sprayed alumina based ceramic coatings
A. A. Abdel-Samad
A. M. M. El-Bahloul
E. Lugscheider
S. A. Rassoul
[J]. Journal of Materials Science, 2000, 35 : 3127 - 3130
[4] ON THE FORMATION OF THERMALLY SPRAYED ALUMINA COATINGS
MCPHERSON, R
[J]. JOURNAL OF MATERIALS SCIENCE, 1980, 15 (12) : 3141 - 3149
[5] Effect of Temperature and Humidity on Dielectric Properties of Thermally Sprayed Alumina Coatings
Niittymaki, Minna
Lahti, Kari
Suhonen, Tomi
Metsajoki, Jarkko
[J]. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2018, 25 (03) : 908 - 918
[6] Characteristics of selected tribological properties of new thermally sprayed coatings
Silesian University of Technology, Krasińskiego 8, Katowice
40-019, Poland
不详
40-007, Poland
[J]. Solid State Phenomena, (161-166): : 161 - 166
[7] Computer experiment on studying the properties of thermally sprayed alumina coatings with lamellar structure
Jordan, V. I.
Solonenko, O. P.
Blednov, V. A.
[J]. 13TH INTERNATIONAL CONFERENCE ON FILMS AND COATINGS, 2017, 857
[8] Statistical Evaluation of Mechanical Properties of Thermally Sprayed Alumina Coatings by Nanoindentation Method
Sanami, Kosuke
Shinoda, Kentaro
Yumoto, Atsushi
Akedo, Jun
[J]. MATERIALS TRANSACTIONS, 2021, 62 (02) : 252 - 260
[9] Abrasion, Erosion and Cavitation Erosion Wear Properties of Thermally Sprayed Alumina Based Coatings
Matikainen, Ville
Niemi, Kari
Koivuluoto, Heli
Vuoristo, Petri
[J]. COATINGS, 2014, 4 (01): : 18 - 36
[10] Tribological characteristics of detonation sprayed alumina coatings
Prakash, Arun
Jacob, Cherian
Prakash, Roshan
Naiju, C. D.
Anil, P. M.
[J]. MATERIALS TODAY-PROCEEDINGS, 2020, 22 : 1590 - 1599

← 1 2 3 4 5 →