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In order to understand the change rule and its mechanism for the space charge property of Magnesium oxide (MgO)/ LDPE nanocomposites after damp, the moisture absorption weight and space charge properties of wet LDPE and MgO/LDPE were studied. Experiments results show that moisture absorption has a strong influence on dielectric properties of MgO/LDPE nanocomposite. After nanocomposite had been exposed...
Summary form only given. Power devices and systems operating in partial vacuum are susceptible to partial discharges, corona, or volume discharge. In most cases, it is important to understand the characteristics of the discharge such as the space-charge distribution, the electron energy distribution, and collision processes in which the species are involved. Breakdown and spectroscopic studies of...
Summary form only given. A problem exists for electronics operating in partial vacuums. The breakdown voltage for a gas decreases as the pressure decreases from atmospheric conditions and reaches a minimum. After this minimum breakdown voltage, it starts to increase as pressure further decreases for a given fixed electrode spacing. An increase in operating frequency can also cause a breakdown to occur...
The mechanism underlying the rapid, early, capacity loss of titanium-based (Ti 2 Ni) hydrogen-storage alloys is examined via X-ray diffraction analysis. The formation and accumulation of Ti 2 NiH 0.5 , a hydride phase that cannot be reversibly charged/discharged according to the experimental results, is proposed as a dominant cause of the early capacity loss of such...
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