Water desorption effects on the surface electrical resistance of air-exposed hydrogenated diamond

2020 ◽  
Vol 512 ◽  
pp. 145491 ◽  
Author(s):  
Roberto Flammini ◽  
Mauro Satta ◽  
Alessandro Bellucci ◽  
Marco Girolami ◽  
Frédéric Wiame ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
Water Desorption ◽  
Surface Electrical Resistance

Surface Electrical Resistances Properties of CNF/PC Nano-Composite Processing by Injection Molding

2011 ◽  
Vol 339 ◽  
pp. 367-370 ◽  
Author(s):  
Jian Hui Qiu ◽  
Kengo Uchiya ◽  
Lei Lin ◽  
Xue Li Wu ◽  
Yang Zhao
Keyword(s):  
Surface Roughness ◽  
Injection Molding ◽  
Electrical Resistance ◽  
Surface Resistance ◽  
Carbon Nanofiber ◽  
High Surface ◽  
Material Surface ◽  
Nano Composite ◽  
Injection Speed ◽  
Surface Electrical Resistance

In the present work, carbon nanofibers (CNF) were dispersed into polycarbonate (PP) with an injection molding machine. The effect of the injection conditions on the electrical resistance of carbon nanofiber/polycarbonate (CNF/PC) nanocomposites was investigated. It was found that the surface resistance decreased with the increase of injection speed and injection temperature. The surface electrical resistance was affected by the particle size and dispersion of CNF, the effect of depth on surface resistance of the composites was studied, the surface electrical resistance sharply increased from the material surface to the internal at first, after that, a decreased slowly was observed. The effect of surface roughness on surface electrical resistance was also studied, the composite with a low surface resistance was greatly influenced when surface roughness changed, while there was not a same phenomenon when the composites have a high surface resistance.

Effect of electric field on the surface electrical resistance of CuO-ZnO hetero-contact

1991 ◽  
Vol 10 (7) ◽  
pp. 381-383 ◽  
Author(s):  
Toshiyuki Shirakawa ◽  
Masaru Miyayama ◽  
Yoshinobu Nakamura ◽  
Hiroaki Yanagida
Keyword(s):  
Electric Field ◽  
Electrical Resistance ◽  
Surface Electrical Resistance

scholarly journals Oxygen detection using yttria-stabilized zirconia thin films doped with platinum

2005 ◽  
Vol 3 (4) ◽  
pp. 605-621 ◽  
Author(s):  
Dimitre Dimitrov ◽  
Ceco Dushkin
Keyword(s):  
Thin Films ◽  
Electrical Resistance ◽  
Dip Coating ◽  
Yttria Stabilized Zirconia ◽  
Oxygen Sensitivity ◽  
Stabilized Zirconia ◽  
Fixed Temperature ◽  
Oxygen Detection ◽  
Kinetics Of ◽  
Surface Electrical Resistance

AbstractYttria stabilized zirconia (YSZ) thin films are obtained using both spray-pyrolysis and dip-coating. The ability of YSZ films incorporated with platinum nanospecies (Pt-YSZ) to detect oxygen is compared with that of pure YSZ thin films using a new experimental setup. With this system, the surface electrical resistance of the films as a function the oxygen content is measured at a fixed temperature. In addition, the effects of thermal annealing on the oxygen sensitivity of the films are observed. Platinum doped samples, Pt-YSZ, show different kinetics of carrier diffusion as compared to pure YSZ samples.

scholarly journals Reinforced materials for radio engineering modified with carbon nanotubes

2020 ◽  
pp. 62-66
Author(s):  
I. D. Kraev ◽  
A. E. Sorokin ◽  
Yu. V. Olikhova ◽  
Yu. M. Titkova
Keyword(s):  
Carbon Nanotubes ◽  
Reflection Coefficient ◽  
Electrical Resistance ◽  
Strength Properties ◽  
Epoxy Binder ◽  
Technological Parameters ◽  
Radio Engineering ◽  
Surface Electrical Resistance ◽  
Reinforced Materials

The paper presents the results of studies of the influence of carbon nanotubes (CNTs) on radio engineering (reflection coefficient), electrophysical (surface electrical resistance), thermomechanical and strength properties of fiberglass based on epoxy binder. The compositions and technological parameters of the manufacture of fiberglass samples are proposed. The change in the electrophysical and radio technical characteristics of fiberglass samples with increasing concentrations of CNTs is shown.

scholarly journals A Nondestructive Evaluation Method: Measuring the Fixed Strength of Spot-Welded Joint Points by Surface Electrical Resistivity

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Akira Shimamoto ◽  
Keitaro Yamashita ◽  
Hirofumi Inoue ◽  
Sung-mo Yang ◽  
Masahiro Iwata ◽  
...  
Keyword(s):  
Welded Joints ◽  
Electrical Resistance ◽  
Spot Welding ◽  
Evaluation Method ◽  
Welded Joint ◽  
Nondestructive Method ◽  
Nugget Diameter ◽  
Two Factors ◽  
Surface Electrical Resistance ◽  
Spot Welded

Destructive tests are generally applied to evaluate the fixed strength of spot-welding nuggets of zinc-plated steel (which is a widely used primary structural material for automobiles). These destructive tests, however, are expensive and time-consuming. This paper proposes a nondestructive method for evaluating the fixed strength of the welded joints using surface electrical resistance. A direct current nugget-tester and probes have been developed by the authors for this purpose. The proposed nondestructive method uses the relative decrease in surface electrical resistance, α. The proposed method also considers the effect of the corona bond. The nugget diameter is estimated by two factors: RQuota, which is calculated from variation of resistance, and a constant that represents the area of the corona bond. Since the maximum tensile strength is correlated with the nugget diameter, it can be inferred from the estimated nugget diameter. When appropriate measuring conditions for the surface electrical resistance are chosen, the proposed method can effectively evaluate the fixed strength of the spot-welded joints even if the steel sheet is zinc-plated.

Sign in / Sign up

Export Citation Format

Share Document