Papers by Author: Bao Cheng Wang

Abstract: Research on design scheme of CWR on large-span bridge in alpine region when expansion joint of rail is not need with the Qinghai-Tibet railway as the research background. The deformation of beam under temperature change was analyzed through Newton iteration method and Finite-Element Method with the seamless track calculation model of line-bridge-pier integration. Design program of setting buffer was adopted after comparison and selection. Continuously welded rail on bridge satisfied the design requirements when design stress-free temperature of rail take 18±3°C and 18±4°C. This research put forward a new design in order to solve laid seamless line on large-span bridge in large temperature difference.

Abstract: Silicon was electrodeposited by electrochemical reduction of silicon tetrachloride in propylene carbonate solvent on an alloy of nickel-titanium-niobium and nickel, which were used as working electrodes respectively. The effect of two substrates as working electrodes on the electrodeposition ability of the silicon was investigated by scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS). Results show that using an alloy of titanium, nickel and niobium as working electrode is better than nickel in the morphology and deposition yield of silicon.

Abstract: In this paper it was investigated that silicon be electrodeposited in the room temperature from propylene carbonate solvent. Cyclic voltammograms indicated that it was possible to electrochemical reduction of silicon chloride at -2.3984V versuHg/Hg2Cl2/ KCl (saturation) quasi-reference electrode. Potentiostatic electrolysis yielded deposits, accompanied by the change in electrolyte color from transparent to brown. Scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS) were used to characterize the physical properties of the silicon. The EDS analysis performed simultaneously with SEM observation demonstrates that the deposit consists of Si, O and Cl.