The role of interfacial zone in dielectric properties of transformer oil-based nanofluids

Diaa-Eldin A. Mansour; Ahmed M. Elsaeed; Mohamed A. Izzularab

doi:10.1109/tdei.2016.005697

The role of interfacial zone in dielectric properties of transformer oil-based nanofluids

IEEE Transactions on Dielectrics and Electrical Insulation ◽

10.1109/tdei.2016.005697 ◽

2016 ◽

Vol 23 (6) ◽

pp. 3364-3372 ◽

Cited By ~ 50

Author(s):

Diaa-Eldin A. Mansour ◽

Ahmed M. Elsaeed ◽

Mohamed A. Izzularab

Keyword(s):

Dielectric Properties ◽

Transformer Oil ◽

Interfacial Zone

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Machine Learning Analysis of Microwave Dielectric Properties for Seven Structure Types: The Role of the Processing and Composition

Journal of Physics and Chemistry of Solids ◽

10.1016/j.jpcs.2021.110178 ◽

2021 ◽

pp. 110178

Author(s):

Natalia Kireeva ◽

Vitaly P. Solov’ev

Keyword(s):

Machine Learning ◽

Dielectric Properties ◽

Microwave Dielectric Properties ◽

Microwave Dielectric ◽

Learning Analysis

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INFLUENCE OF La2O3 ADDITIONS ON CHEMICAL DURABILITY AND DIELECTRIC PROPERTIES OF BOROALUMINOSILICATE GLASSES

Surface Review and Letters ◽

10.1142/s0218625x1250062x ◽

2012 ◽

Vol 19 (06) ◽

pp. 1250062 ◽

Cited By ~ 3

Author(s):

X. H. ZHANG ◽

Y. L. YUE ◽

H. T. WU

Keyword(s):

Dielectric Properties ◽

Chemical Durability ◽

Tangent Loss ◽

Frequency Range ◽

Scanning Calorimetry ◽

Glass Transition Temperatures ◽

Weight Losses ◽

Quenching Method ◽

Scanning Electron

Boroaluminosilicate glasses containing La2O3 were prepared by the normal quenching method. The glass transition temperatures (Tg) were measured by differential scanning calorimetry (DSC). The structural role of RO was investigated by nuclear magnetic resonance (NMR). Chemical durability was evaluated by weight losses of glass samples after immersion in HC1 solution. High resolution scanning electron microscopy (HR-SEM) was used to examine the surface micrographs of corroded glass samples. The dielectric constant and tangent loss were measured in the frequency range 10–106 Hz. The results revealed that chemical durability and dielectric properties increased with increasing La2O3 content.

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Role of Zn substitution on structural, magnetic and dielectric properties of Cu–Cr spinel ferrites

Indian Journal of Physics ◽

10.1007/s12648-015-0817-2 ◽

2016 ◽

Vol 90 (8) ◽

pp. 869-880 ◽

Cited By ~ 4

Author(s):

S. Anjum ◽

H. Nazli ◽

R. Khurram ◽

Talat Zeeshan ◽

S. Riaz ◽

...

Keyword(s):

Dielectric Properties ◽

Spinel Ferrites ◽

Zn Substitution ◽

Magnetic And Dielectric Properties ◽

Role Of Zn

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Dielectric properties of Shell oil transformer oil with impurities of carbon nanotubes and fullerene C60

Semiconductor Physics Quantum Electronics & Optoelectronics ◽

10.15407/spqeo24.04.413 ◽

2021 ◽

Vol 24 (04) ◽

pp. 413-418

Author(s):

O.V. Kovalchuk ◽

◽

I.P. Studenyak ◽

T.M. Kovalchuk ◽

E.A. Ayryan ◽

...

Keyword(s):

Magnetic Field ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Dielectric Properties ◽

Fullerene C60 ◽

Transformer Oil ◽

C60 Fullerene ◽

Cooling Efficiency ◽

Fullerene Concentration ◽

Multiwall Nanotubes

At the temperature 293 K, the influence of two types of nanoimpurities (carbon multiwall nanotubes and C60 fullerene) both separately and together on the dielectric properties of Shell oil transformer oil has been studied. It has been shown that these impurities do not significantly effect on the value of the dielectric permittivity of Shell oil, but more significantly increase its conductivity. It has been found that in the presence of nanotubes inside Shell oil, the dependence of its electrical conductivity on the fullerene concentration is nonmonotonic. The samples with the fullerene concentration 100 ppm have the highest conductivity. At the fullerene concentration 300 ppm, the conductivity of Shell oil with the impurities of carbon nanotube and C60 fullerene becomes almost equal to the electrical conductivity of Shell oil only with the impurities of carbon nanotubes. It has been suggested that C60 fullerene can be used to reduce the electrical conductivity of Shell oil with magnetic nanoparticles required to increase the cooling efficiency of transformers under the action of their own magnetic field.

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