Magnetic aging of electric sheet coated with an electrical insulator

1974 ◽  
Vol 16 (10) ◽  
pp. 870-871
Author(s):  
N. T. Omel'yanenko ◽  
E. A. Prokopchenko
Keyword(s):  
Electrical Insulator ◽  
Magnetic Aging ◽  
Electric Sheet

Magnetic aging of electric sheet

1975 ◽  
Vol 17 (4) ◽  
pp. 317-319
Author(s):  
L. I. Gvozdeva ◽  
K. F. Losev ◽  
L. P. Kamysheva ◽  
L. P. Parsheva
Keyword(s):  
Magnetic Aging ◽  
Electric Sheet

Magnetic aging of low-carbon electric sheet

1973 ◽  
Vol 15 (8) ◽  
pp. 677-680
Author(s):  
L. V. Mironov ◽  
K. F. Losev ◽  
L. P. Kamysheva ◽  
Yu. N. Yaroshenko ◽  
V. M. Petlyakov
Keyword(s):  
Low Carbon ◽  
Magnetic Aging ◽  
Electric Sheet

Characteristics of Polyethylene Thin Films Deposited by Ionized Cluster Beam

1987 ◽  
Vol 108 ◽  
Author(s):  
Hiroaki Usui ◽  
Kouji Numata ◽  
Hitoshi Dohmoto ◽  
Isao Yamada ◽  
Toshinori Takagi
Keyword(s):  
Thin Films ◽  
Chemical Structure ◽  
Field Measurements ◽  
Breakdown Field ◽  
Cluster Beam ◽  
Electrical Insulator ◽  
Polyethylene Films ◽  
Interface Property ◽  
Stable Chemical ◽  
Film Substrate

ABSTRACTPolyethylene thin films were deposited by the ionized cluster beam (ICB) method. The dielectric, resistivity, and breakdown field measurements showed that the ICB polyethylene films have excellent properties as an electrical insulator. The characteristics of Au/polyethylene/Si MIS diodes and MISFErs indicated that the ICB method can control the film-substrate interface property. The SIMS and ESCAan alyses showed that the ICB films have pure and stable chemical structure.

Vitrification of low silica fly ash: suitability of resulting glass ceramics for architectural or electrical insulator applications

2009 ◽  
Vol 108 (1) ◽  
pp. 27-32 ◽  
Author(s):  
K. C. Vasilopoulos ◽  
D. U. Tulyaganov ◽  
S. Agathopoulos ◽  
M. A. Karakassides ◽  
M. Ribeiro ◽  
...  
Keyword(s):  
Fly Ash ◽  
Glass Ceramics ◽  
Electrical Insulator

Review on the development of jute polyethylene nanocomposites as a function of fiber chemical treatments

2021 ◽  
Vol 13 ◽  
Author(s):  
Md. Faruk Hossen ◽  
Md. Ali Asraf ◽  
Md. Kudrat-E-Zahan ◽  
C. M. Zakaria
Keyword(s):  
Polymer Composites ◽  
Polymer Nanocomposites ◽  
Surface Hardness ◽  
Polymeric Materials ◽  
Fiber Reinforced Polymer ◽  
Jute Fiber ◽  
Fiber Reinforced ◽  
Electrical Insulator ◽  
Chemical Treatments ◽  
Reinforced Polymer

: The research on jute fiber reinforced polymer composites is an emergent concern with the development of new materials due to its significant properties like economical, partially biodegradable and environment friendly. It is wondered that the hydrophilic nature of jute fiber negatively affects the interfacial interaction with hydrophobic polymeric materials in the composite which then affects the resultant mechanical, microstructural and physico-chemical absorption properties. In order to overcome this fact, researchers have been carried out some techniques for fiber surface chemical treatments. On the other hand, due to the low processing costs and design flexibility, thermoplastics deal many benefits over thermoset polymers, and polyethylene shows excellent processing behaviors such as: low density, low cost, considerable flex life, outstanding surface hardness, scratch resistance and good electrical insulator. Beside the traditional thermoplastic and thermosetting polymers, montmorillonite nanoclay are also receiving attention to manufacture fiber polymer nanocomposites for industrial and household applications as well. The review is considered to highlight the progress of jute fiber reinforced polymer nanocomposites. The study also focuses on the several features of juter polymer composites and nanocomposites as a function of fiber chemical treatments.

scholarly journals ESTIMATION OF INSULATOR CONTAMINATIONS BY MEANS OF REMOTE SENSING TECHNIQUE

2016 ◽  
Vol XLI-B8 ◽  
pp. 73-77
Author(s):  
Ge Han ◽  
Wei Gong ◽  
Xiaohui Cui ◽  
Miao Zhang ◽  
Jun Chen
Keyword(s):  
Remote Sensing ◽  
Vegetation Index ◽  
Rough Set Theory ◽  
Evaluation Framework ◽  
Likelihood Method ◽  
Accurate Estimation ◽  
Support Vector ◽  
Ambient Atmosphere ◽  
Electrical Insulator ◽  
Severity Levels

The accurate estimation of deposits adhering on insulators is critical to prevent pollution flashovers which cause huge costs worldwide. The traditional evaluation method of insulator contaminations (IC) is based sparse manual in-situ measurements, resulting in insufficient spatial representativeness and poor timeliness. Filling that gap, we proposed a novel evaluation framework of IC based on remote sensing and data mining. Varieties of products derived from satellite data, such as aerosol optical depth (AOD), digital elevation model (DEM), land use and land cover and normalized difference vegetation index were obtained to estimate the severity of IC along with the necessary field investigation inventory (pollution sources, ambient atmosphere and meteorological data). Rough set theory was utilized to minimize input sets under the prerequisite that the resultant set is equivalent to the full sets in terms of the decision ability to distinguish severity levels of IC. We found that AOD, the strength of pollution source and the precipitation are the top 3 decisive factors to estimate insulator contaminations. On that basis, different classification algorithm such as mahalanobis minimum distance, support vector machine (SVM) and maximum likelihood method were utilized to estimate severity levels of IC. 10-fold cross-validation was carried out to evaluate the performances of different methods. SVM yielded the best overall accuracy among three algorithms. An overall accuracy of more than 70% was witnessed, suggesting a promising application of remote sensing in power maintenance. To our knowledge, this is the first trial to introduce remote sensing and relevant data analysis technique into the estimation of electrical insulator contaminations.

scholarly journals High pressure synthesis of BN and BCN crystals and their functionalization

2014 ◽  
Vol 70 (a1) ◽  
pp. C751-C751
Author(s):  
Takashi Taniguchi
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Purity ◽  
Chemical Vapour ◽  
Attractive Potential ◽  
Luminescence Spectra ◽  
Hard Material ◽  
High Temperature Annealing ◽  
Electrical Insulator ◽  
Carbon Impurity

Hexagonal BN (hBN) and cubic BN (cBN) are known as the representative crystal structures of BN. The former is chemically and thermally stable, and has been widely used as an electrical insulator and heat-resistant materials. The latter, which is a high-density phase, is an ultra-hard material second only to diamond. Recently, some progresses in the synthesis of high purity BN crystals were achieved by using Ba-BN as a solvent material at high pressure crystal growth [1]. Band-edge natures (cBN Eg=6.2eV and hBN Eg=6eV) were characterized by their optical properties. The key issue to obtain high purity crystals is to reduce oxygen and carbon contamination in the growth circumstances. It should be emphasized that hBN exhibits attractive potential for deep ultraviolet (DUV) light emitter [2 ] and also superior properties as substrate of graphene devices [3]. In this study, the effect of carbon impurity in BN is investigated. Three types of experimental approaches were carried out; (1) synthesis of high purity hBN single crystals and its characterization with respect to residual carbon, (2) high temperature solid state diffusion of carbon into hBN and its characterization, and (3) high temperature annealing of turbostratic B-C-N(t-BCN) compound under high pressure. t-BCN flakes obtained by chemical vapour deposition process was annealed near 3000C and 2GPa so as to become well crystallized.At annealing near 3000C at 2GPa with graphite, carbon incorporation of 1E21/cm3 in hBN was achieved with exhibiting totally different Cathode Luminescence spectra feature with high purity hBN crystals. Since major carbon contribution may affect the crystal structure of the 2-D layers stacking in hBN system, phase stability of BCN ternary phase will be introduced by the experimental results of high temperature annealing. Furthermore, effect of carbon impurity upon the synthesis of wurtzite BN from highly crystalline hBN via martensitic phase transformation will also be introduced.

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