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Document Type |
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Thesis |
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Document Title |
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STRUCTURAL, MECHANICAL AND ELECTROCHEMICAL PROPERTIES OF ADVANCED FUNCTIONAL MATERIALS الخصائص الهيكلية والميكانيكية والإلكتروكيميائية للمواد الوظيفية المتقدمة |
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Subject |
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Faculty of Science |
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Document Language |
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Arabic |
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Abstract |
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Since the first production of a metallic glass alloys in gold-based system by rapid solidification technique in 1960, much effort has been devoted to developing glassy alloys because of the outstanding novel aspects of disordered atomic configurations for metallic alloys glasses. That resulted in, new alloy components with unique functional properties and new direct production processes with rapid cooling and final material shape. Bulk metallic glass (BMG) materials can be classified as one of the most important classes of advanced and functional materials and are used in enormously wide fields of practical applications. Therefore, the possible attractive applications for the BMG materials are infinite. For the continuation of the current standard of living, it is necessary to preserve the earth’s natural resources and to have clean and permanent energy sources to form sustainable societies. Energy is the most important requirement of the modern era, so the search for diverse and effective sources for its generation and storage is inevitable and primary. Today, reliance on batteries and capacitors is irreplaceable. Therefore, the development of these devices has become the focus of global research and industrial interest. These devices can be developed using new, cheap and available advanced materials or modern engineered designs. This research aims to develop glassy alloys that can be used as electrodic materials in capacitors and batteries. These materials are expected to help improve storage capacity and extend the lifespan of the energy devices. In this research study metallic glass alloys are prepared from the pure elements of Zr, Al, Ni, and Cu by melt-spinning technique (rapid cooling). The nature of glassy structure and the crystallization kinetick are studied by differential calorimetry DSC and X-ray diffraction. Electrochemical dealloying measurements were carried out using 3-elecgtroe cell (Pt-counter electrode, Ag/AgCl-refrence electrode and glassy alloys as a working electrode in 1M H2SO4 to produce a porous materials and some useful parameters were deduced including corrosion resistance. The gravimetric capacitances of the resultant porous materials were also calculated through cyclic-voltammetry measurements in 6M KOH solution. |
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Supervisor |
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Dr. Al-Sayed Shaalan |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1445 AH
2023 AD |
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Added Date |
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Wednesday, October 4, 2023 |
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Researchers
| وفاء سعيد الغامدي | Alghamdi, Wafa Saeed | Researcher | Doctorate | |
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