Investigation of breakdown in porous ceramics initiated by nanosecond pulses / Punanov I. F.,Emlin R. V.,Morozov P. A.,Cholakh S. O. // RUSSIAN PHYSICS JOURNAL. - 2012. - V. 55, l. 2. - P. 191-194.

ISSN/EISSN:

1064-8887 / нет данных

Type:

Article

Abstract:

Breakdown delay times are measured and velocities of forming a conductive channel in aluminum oxide based porous ceramic materials impregnated with transformer oil are determined for pulsed electrical breakdown initiated by nanosecond pulses at a voltage of 140 kV. The breakdown delay times are also measured in monolithic aluminum oxide ceramics and leuco-sapphire single crystals. It is demonstrated that in porous ceramics, the average velocity of breakdown channel propagation decreases with increasing volume of the sample occupied by the liquid dielectric in comparison with single crystal and monolythic ceramics; it makes 50\% of the velocity of breakdown channel propagation in leuco-sapphire and exceeds 3 times the corresponding value in transformer oil measured at the same voltage and pulse duration.

Author keywords:

electrical breakdown; aluminum oxide ceramics; porous ceramics; nanosecond voltage pulses

DOI:

10.1007/s11182-012-9794-5

Web of Science ID:

ISI:000306791800009

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	lfd@iep.uran.ru
ResearcherID-Numbers	Cholakh, Seif/M-8221-2016
ORCID-Numbers	Cholakh, Seif/0000-0002-9313-6614
Funding-Acknowledgement	Ural Federal University
Funding-Text	This work was supported in part by the Ural Federal University within the framework of the Competition on Scientific Research of Post Graduate Students and Masters of the Ural Federal University.
Number-of-Cited-References	14
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	5
Journal-ISO	Russ. Phys. J.
Doc-Delivery-Number	979CF