Copper oxide thin film was successfully prepared by electrolysis method and deposited on glass and porous silicon substrates. The main goal of this paper is to study the properties of copper oxide thin films and prepare a solar cell of low cost and good efficiency. These properties were optimized at annealing temperature (200) °C. The transmission spectrum were studied for the prepared thin film showed good transparency in the visible region. The structure of films was characterized by X-ray diffraction. The average grain size of the thin film from AFM analysis is about 46.3 nm. The energy bandgap is found to be (3.8) eV this wide bandgap is due to the quantum size effect. The solar cell efficiency is found to be (12.9%).
It has been investigated by molecular dynamics method the effect of oxygen injection for Ti3SiC2 corrosion inhibition when this material immersed into high temperature liquid lead coolant. The diffusion coefficient of Ti3SiC2 was determined from mean-square-displacement simulation data. The structures of Ti3SiC2 during corrosion inhibition using oxygen agent were observed by Ovito vizualisation code. The simulations have been done using the Moldy molecular dynamics code. Initial material structure as input of simulation generated by Atomsk, Packmol and VESTA codes based on “file 1520829.cif” format file that taken from the crystallography open database (CoD) website. It is from our work we can show that injecting oxygen with concentration about 0.15 – 0.19 wt%, it seems can stabilize the structure of Ti2SiC3 maximally.
SIMULATION OF IRON CORROSION IN LEAD-MAGNESIUM EUTECTIC (LME) USING OXYGEN INHIBITOR. Lead-magnesium (Pb-Mg) is a metal that considered to have potential as a coolant raw material in the heat transfer system of nuclear reactors. However, the coolant in the form of Pb-Mg eutectic is corrosive to structured materials (eg steel cladding) used in reactors. In this research, steel material is represented by pure iron to simplify the simulation and calculation. This research aims to determine the effect of temperature on iron corrosion and the effect of adding oxygen as an inhibitor to reduce the iron corrosion rate in LME. In this study, corrosion was observed by looking at (coefficient) the diffusion of iron atoms into LME. A large iron diffusion coefficient represents high iron corrosion. To see inhibition effectivity with oxygen, the most effective oxygen concentration that can reduce the iron diffusion coefficient is searched. Simulations of iron corrosion and inhibition are performed using molecular dynamics simulation. The result of this research showed that oxygen concentration mixed into LME for effective inhibition of iron corrosion was in the range of 0.125 wt% - 0.135 wt% (for temperatures of 973K). Thus, oxygen is believed that able to inhibit iron corrosion in Pb-Mg eutectic up to 98.44%
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