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) To fairly compare ηcp and ηcd, an average value of current density about pulse and direct is supposed to the same. Fast duty cycle and pulse current will enhance the polarization overpotential, as indicated... is an average current density; γ is the duty cycle (1>γ>0, lgγ<0 ); ton and toff refer to the positive- and negative-time of double pulse power, respectively. 3.3 Effect of RE addition on deposition rate......
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J. Cent. South Univ. (2016) 23: 2254-2267 DOI: 10.1007/s11771-016-3283-x Adaptive controller design based on input-output signal selection for voltage source converter high voltage direct current... current/high voltage direct current (HVAC/HVDC) power system is presented to study power system stability. It is well known that appropriate coupling of inputs-outputs signals in the multivariable HVDC......
. The dislocation multiplication induced by pulse electric current would result in the increase of dislocation density. In addition, the distribution of nanosized carbide particles was much more dispersive after... the solid state phase transformation in metals. It was firstly reported by KOPPENAAL and SIMCOE [3] that, a DC electric current density of about 103 A/cm2 enhanced the precipitation rate of the Al-4% Cu......
and the electric arc resistance could be considered as a static linear relation with respect to its length [8-9]. However, these descriptions in a direct current state are too simple and all connections... conductance, arc current and arc length. Meantime, the high voltage transmission circuit feeding the arc furnace transformer, tap changer on the furnace transformer and mutual inductances between the three......
-zirconium diboride (ZrB2) composites were studied and the effects of current density (DC) and pulse duty cycle (PC) on the EDM performance of the composites were investigated. With increasing current...Effect of direct current and pulse plating on the EDM performance of copper-zirconium diboride compositesDongming Guo, Min Zhang, Zhuji Jin, and Renke Kang Key Laboratory of the Ministry of Education......
evolution of magnesium alloy AZ91D prepared by electric current pulse discharge during partial remelting ZHOU Quan, YANG Yuan-sheng, TANG Jun-li, HU Zhuang-qi (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China) Abstract: The non-dendritic semi-solid magnesium alloy AZ91D is prepared by reheating the AZ91D alloy treated by low-voltage electric current pulse......
distribution was carried out. Electric potential distribution and simulation were proceeded to observe the current density distribution [12]. The assumptions are made as follows [13-16]. 1) The current... is governed by Faraday’s law. 3) The conductivity of electrolyte, γ, is constant. The current density distribution is obtained by solving the electric potential distribution as governed by Laplace’s......
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