Compaction pressure effect on the dielectric, DC and AC conductivity of C-130 porcelain

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F24%3A43924538" target="_blank" >RIV/62156489:43510/24:43924538 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/24:00375246

Result on the web

<a href="https://doi.org/10.1016/j.ceramint.2024.01.073" target="_blank" >https://doi.org/10.1016/j.ceramint.2024.01.073</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ceramint.2024.01.073" target="_blank" >10.1016/j.ceramint.2024.01.073</a>

Result language

angličtina

Original language name

Compaction pressure effect on the dielectric, DC and AC conductivity of C-130 porcelain

Original language description

Porcelain insulators can be prepared in a variety of compositions using several different preparation techniques. In the frame of the present work the effect of the applied compaction pressures on the C-130 grade electroporcelain was studied in terms of electrical and dielectric properties. Compaction is a widely used preparation process, nevertheless, a little is known about the effect of the compaction pressure on the final electrical properties of the material. Samples prepared with different compaction pressures (from 70 MPa to 110 MPa; 10 MPa step size) were subjected to a measurement of DC conductivity up to 1200 oC, and a measurement of dielectric properties at room temperature after different firing temperatures. The DC conductivity of the raw samples ranged from TILDE OPERATOR+D9110MINUS SIGN 10 S/m at room temperature to &lt;10MINUS SIGN 3 S/m at 1100 oC. Temperature dependence of the DC conductivity revealed that the dominant charge carriers were H+ and OHMINUS SIGN ions (initial stages of heating) and alkali ions (at high temperatures and during second heating). The DC conductivity of the previously fired samples (at 1100 oC) ranged from TILDE OPERATOR+D9110MINUS SIGN 12 S/m (room temperature) to TILDE OPERATOR+D9110MINUS SIGN 3 S/m (1200 oC). The AC conductivity of the samples ranged from TILDE OPERATOR+D9110MINUS SIGN 7 S/m (samples fired at 1300 oC, measured at low frequencies) to TILDE OPERATOR+D9110MINUS SIGN 3 (raw sample, measured at high frequencies). AC conductivity measurements and dielectric analysis confirmed that the conduction occurred through ion hopping and the bulk boundary conductivity was dominant. The relative permittivity reached 7-8 after firing at 1300 oC at frequencies above 2 MHz.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20504 - Ceramics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Ceramics International

ISSN

0272-8842

e-ISSN

1873-3956

Volume of the periodical

50

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

11688-11696

UT code for WoS article

001197956800001

EID of the result in the Scopus database

2-s2.0-85182004951