Resistivity testing for earthing safety

2016 ◽  
Author(s):  
Philip Boys
Keyword(s):  
Resistivity Testing

scholarly journals Effect of Nanoparticle Surface Modification and Filling Concentration on Space Charge Characteristics in TiO2/XLPE Nanocomposites

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Youyuan Wang ◽  
Kun Xiao ◽  
Can Wang ◽  
Lijun Yang ◽  
Feipeng Wang
Keyword(s):  
Surface Modification ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Space Charge ◽  
Volume Resistivity ◽  
Charge Accumulation ◽  
Nanoparticle Surface ◽  
Nanoparticle Surface Modification ◽  
Resistivity Testing ◽  
Scanning Electron

This paper focuses on the space charge characteristics in TiO2/cross-linked polyethylene (XLPE) nanocomposites; the unmodified and modified by dimethyloctylsilane (MDOS) TiO2 nanoparticles were added to XLPE matrix with different mass concentrations (1 wt%, 3 wt%, and 5 wt%). The scanning electron microscope (SEM) showed that the MDOS coupling agent could improve the compatibility between TiO2 nanoparticles and XLPE matrix to some extent and reduce the agglomeration of TiO2 nanoparticles compared with unmodified TiO2 nanoparticles; the volume resistivity testing indicated that the volume resistivity of TiO2/XLPE nanocomposites was higher than Pure-XLPE and increased with the increase of filling concentrations. According to the pulsed electroacoustic (PEA) measurements, it was concluded that the space charge accumulation was suppressed by filling TiO2 nanoparticles and the distribution of electric field in samples was improved greatly. In addition, it was found that the injection of homocharge was more obvious in MDOS-TiO2/XLPE than that in UN-TiO2/XLPE and the homocharge injection decreased with the increase of filling concentration.

scholarly journals Printability and Properties of Conductive Inks on Primer-Coated Surfaces

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Hector R. Mendez-Rossal ◽  
Gernot M. Wallner
Keyword(s):  
Electrical Conductivity ◽  
Surface Roughness ◽  
Electrical Resistivity ◽  
Screen Printing ◽  
Good Adhesion ◽  
Laser Confocal Microscopy ◽  
Conductive Inks ◽  
Coated Metal ◽  
Coated Surfaces ◽  
Resistivity Testing

Conductive inks’ performance is affected by the printing conditions and the substrate’s properties. In this study, one graphite-, one polymer-, and two silver-based conductive inks were printed on four primer-coated metal substrates by screen printing. The compatibility and wettability between the inks and the primers were evaluated by infrared spectroscopy and surface energy measurements. The printed structures were characterized by laser confocal microscopy, peel-off tape testing, and four-point probe electrical resistivity testing. In general, silver inks exhibited the best performance in terms of printability and electrical conductivity. The graphite ink presented the worst printing, adhesion, and functional properties. The polymer-based ink revealed poor wettability but good adhesion and functionality. The surface roughness, energy, and polarity of the primer coating had no significant influence on the electrical conductivity of the printed inks.

scholarly journals Application of Soil Resistivity Testing using Geoelectrical Method For Landslide Identification

2020 ◽  
Vol 1655 ◽  
pp. 012095
Author(s):  
Edy Ervianto ◽  
Noveri Lysbetti Marpaung ◽  
Rahyul Amri ◽  
Amirul Latief Azzmi
Keyword(s):  
Soil Resistivity ◽  
Resistivity Testing

scholarly journals Resistivity Testing of Palladium Dilution Limits in CoPd Alloys for Hydrogen Storage

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 111
Author(s):  
Sudhansu Sekhar Das ◽  
Gregory Kopnov ◽  
Alexander Gerber
Keyword(s):  
Hydrogen Storage ◽  
High Throughput Screening ◽  
Hydrogen Absorption ◽  
Large Scale ◽  
Hydrogen Storage Material ◽  
Resistivity Measurements ◽  
Film Alloy ◽  
Effective Hydrogen ◽  
Resistivity Testing ◽  
Additional Hydrogen

Palladium satisfies most of the requirements for an effective hydrogen storage material with two major drawbacks: it has a relatively low gravimetric hydrogen density and is prohibitively expensive for large scale applications. Pd-based alloys should be considered as possible alternatives to a pure Pd. The question is how much one can dilute the Pd concentration in a variety of candidate materials while preserving the hydrogen absorption capability. We demonstrate that the resistivity measurements of thin film alloy samples can be used for a qualitative high-throughput screening and study of the hydrogen absorbing properties over the entire range of palladium concentrations. Contrary to palladium-rich alloys where additional hydrogen scattering indicates a degree of hydrogen content, the diluted alloy films respond by a decrease in resistance due to their thickness expansion. Evidence of significant hydrogen absorption was found in thin CoPd films diluted to just 20% of Pd.

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