Results 161 to 170 of about 123,302 (215)

Facile green synthesis of silver doped NiO nanoparticles using aloe vera latex for efficient energy storage and photocatalytic applications. [PDF]

Heliyon
Alfadhli S, Khasim S, Darwish AAA, Al-Nahdi K, Abdelkader M, Gamal R, Hamdalla TA.   +6 more
europepmc   +1 more source

Advanced Microwave Processing for Next-Generation Materials. [PDF]

ACS Appl Mater Interfaces
Ravi P, Nozariasbmarz A.
europepmc   +1 more source

High-performance varistors simply by hot-dipping zinc oxide thin films in Pr₆O₁₁: Influence of temperature. [PDF]

Sci Rep, 2017
Wang Y, Peng Z, Wang Q, Wang C, Fu X.
europepmc   +1 more source

Dielectric properties and nonlinear electrical behavior of CaCu₃Ti_4-<i>x</i> (Sb_1/2Ta_1/2) _<i>x</i> O₁₂ ceramics. [PDF]

RSC Adv
Chatputsa T, Wongsricha J, Srilarueang S, Phromviyo N, Putasaeng B, Nachaithong T, Srepusharawoot P, Thongbai P.   +7 more
europepmc   +1 more source

Metastable Barrier Voltage in ZnO Varistors

MRS Proceedings, 1981
ABSTRACTA reversible change in barrier voltage is observed in assintered ZnO varistors upon application and removal of the applied voltage. This is attributed to a metastable component in the grain boundary Schottky barriers. Varistors show improved stability when the metastable component is removed or fixed by heat treatment.
Tapan K. Gupta, William G. Carlson, Barbara O. Hall   +2 more
openaire   +2 more sources

An Experimental Study of the Failure Mode of ZnO Varistors Under Multiple Lightning Strokes

Electronics, 2019
In this study, in order to explore the failure mode of ZnO varistors under multiple lightning strokes, a five-pulse 8/20 μs nominal lightning current with pulse intervals of 50 ms was applied to ZnO varistors.
Hongyan Xing, Chunlong Zhang, Pengfei Li
exaly   +2 more sources

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Degradation phenomena of ZnO varistors

Physica Status Solidi (a), 1981
The dc degradation behaviour of ZnO varistors as a function of the variables current, temperature, and time is investigated. The degradation rate is phenomenologically presented by an equation reflecting the observed aging behaviour in dependence on the influencing variables.
W. Moldenhauer, K. -H. Bäther, W. Brückner, D. Hinz, D. Bühling   +4 more
openaire   +1 more source

Microchemistry of ZnO Varistors

Proceedings, annual meeting, Electron Microscopy Society of America, 1992
ZnO varistors are made by mixing semiconducting ZnO powder with powders of other metal oxides e.g. Bi2O3, Sb2O3, CoO, MnO2, NiO, Cr2O3, SiO2 etc., followed by conventional pressing and sintering. The non-linear I-V characteristics of ZnO varistors result from the unique properties that the grain boundaries acquire as a result of dopant distribution ...
K. K. Soni, J. Hwang, V. P. Dravid, T. O. Mason, R. Levi-Setti   +4 more
openaire   +1 more source

Origin of ZnO Varistor

Journal of the American Ceramic Society, 1987
The varistor properties were examined in porous ZnO. The sample used contained no dopants such as Bi 2 O 3 or Pr 6 O 11 , which are usually considered to be useful in ...
Satoru Fujitsu, Hiroshi Toyoda, Hiroaki Yanagida   +2 more
openaire   +1 more source

Degradation in ZnO varistors

Journal of Physics: Condensed Matter, 1993
Among the mechanisms suggested to account for degradation of varistor materials, ion migration has strong support. Mobile, positively charged ions in the depletion layer would be the key element in degradation. In this context, the authors discuss the consequences of an electrical stressing on the current-temperature characteristic of a comment ...
M S Castro, M A Benavente, C M Aldao
openaire   +1 more source