Abstract
A disordered aluminum oxide grown on recycled aluminum sheets was synthesized by a corrosion/oxidation process. First, aluminum sheets recovered from unusable beverage cans were mechanically polished and dried in air atmosphere. Second, corrosion and oxidation into the aqueous solutions were the synthesis stages to produce aluminum oxide. Phase formation and electrical conduction of aluminum-oxide layers were validated by X-ray diffraction analysis and current–voltage plots at room temperature. An aluminum oxide-based structure operating under unusual principles at an extended lifetime resulted when an aluminum-oxide layer was inserted between two aluminum electrodes. This was attributed to an unusual electrical conduction. Some suggested models from the circuit theoretic properties are discussed here for potential usefulness for the aluminum oxide synthesized, as an environmental-friendly material that can be further useful into a sustainable scenario.
Highlights
In the synthesis of metal oxides by corrosion/oxidation processes, many metals such as steel, nickel, titanium, zirconium alloys, silver, and aluminum-based alloys are well known as oxide-passivated metals, with titanium being an essential corrosion-resistant metal that may be used in high-strength applications [1,2]
Aluminum oxide-based structures are synthesizing by a corrosion/oxidation process from the recycled aluminum sheets
Studies of X-ray diffraction and electrical conduction have confirmed that the dynamic behavior of electron carriers trapped in vacancies is associated with a disordered array of aluminum and oxygen ions inside a crystalline lattice of aluminum oxide
Summary
In the synthesis of metal oxides by corrosion/oxidation processes, many metals such as steel, nickel, titanium, zirconium alloys, silver, and aluminum-based alloys are well known as oxide-passivated metals, with titanium being an essential corrosion-resistant metal that may be used in high-strength applications [1,2]. Aluminum is the third most abundant element after oxygen and silicon and is the most abundant metal in the earth This metal is chemically reactive, highly conductive, and non-magnetic [5]. Other manner to produce aluminum is when the alumina (Al2 O3 ), found in nature as the corundum mineral, is converted to metal by Hall–Heroult process. Theoretic prototypes which show that electrical conduction in disordered aluminum oxide might play an important role for the optimized signal processing in electronics.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
