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The natural oxidation of amorphous CuxZr1-x (x = 0.33, 0.5, 0.67 and 0.75) alloys has been studied by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and cross-sectional transmission electron microscopy. It is revealed that passivation behavior occurs for amorphous CuxZr1-x alloys where x ≤ 0.67, which provides an effective composition range of amorphous CuZr alloys...
Ag/SiO 2 monolithic mesoporous nanocomposite was prepared by a simple impregnation of the preformed monolithic porous host in silver nitrate aqueous solution followed by ultrasonic irradiation of the liquid-solid mixture at room temperature. The formation and size of the particle in porous host have been determined from high-resolution transmission electron microscope (HRTEM), UV-Vis absorption...
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