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="ChDivSummary" name="ChDivSummary">Nickel/nano-Al2O3 composite coatings produced by the pulse electrodeposition method and the influence of pulse parameters, i.e., pulse frequency, duty cycle, and current... of the specimen. The assessment results clearly reveal that the specimen exhibits the maximum hardness at the pulse frequency of 20 Hz, duty cycle of 30%, and peak current density of 0.4 A/cm2 , which......
begins, in the cathodic compartment, the solution remains colourless, a variable colour deposit is formed on the electrode, a gas is discharged for the high value of current density. The electrochemical reactions can be written as In the anodic compartment, the colour of the solution changes to green, a gas is discharged for the high value of current density. The electrochemical reactions......
; Abstract: Three dimensional geophysical models were abstracted and established according to characteristics of oil and gas reservoir. Then direct current fields for different models... border. HE and LIU[8] employed hole-to-surface method to transmit the varied squared wave current, referred the case of oil and gas reservoir and located its range and border according to layer......
Depolarised gas anodes for aluminium electrowinning G. M. HAARBERG1, E. KVALHEIM1, A. P. RATVIK1, S. J. XIAO1, T. MOKKELBOST2 1. Department of Materials Science and Engineering, Norwegian... a higher anode potential. An alternative approach is to use a natural gas or hydrogen gas anode to reduce the CO2 emissions and lower the anode potential. Preliminary laboratory experiments were carried......
Preparation of Biodegradable Mg/β-TCP Biofunctional Gradient Materials by Friction Stir Processing and Pulse Reverse Current ElectrodepositionYabo Zhang1,Huiling Yang1,Shaoqian Lei1,Shijie Zhu1,2,Jianfeng Wang1,2,Yufeng Sun1,2,Shaokang Guan1,21. School of Materials Science and Engineering,Zhengzhou University2. Henan Key Laboratory of Advanced Magnesium Alloys摘 要:
the molar concentrations of reactant gas and product gas the radius of unreacted core at the current time level will be taken as the initial variables. Then steps 2)-7) are repeated until the convergence...J. Cent. South Univ. (2017) 24: 1144-1154 DOI: 10.1007/s11771-017-3517-6 Interactions between gas flow and reversible chemical reaction in porous media JIANG Yuan-yong(姜元勇)1, XU Zeng-he(徐曾和)1, ZHANG......
Development of gas tungsten arc welding using current pulsing technique to preclude chromium carbide precipitation in aerospace-grade alloy 80AP.Subramani,M.ManikandanSchool of Mechanical Engineering, Vellore Institute of Technology摘 要:Weldments were produced using gas tungsten arc welding(GTAW) and pulsed current gas tungsten arc welding(PCGTAW......
Numerical simulation of thermal-mechanical process of Al-Si-Pb alloy treated by high current pulsed electron beam L? Xiao-xia(吕晓霞), LI Rong-guang(李荣广), AN Jian(安 健) Key Laboratory... irradiated by high current electron beam (HCPEB) reveals three distinct regions: a molten zone, an overlapped zone of heat-affected and quasistatic thermal stress-affected zone, and a transition zone......
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60% as the original size of the predicted entrapped gas. The above comparison and discussion demonstrate that the current simulation method is valid and can provide useful information for process... Simulation of mold filling and prediction of gas entrapment on practical high pressure die castings ZHAO Hai-dong(赵海东), BAI Yan-fei(白砚飞), OUYANG Xiao-xian(欧阳晓贤), DONG Pu-yun(董普云) State......