Aleyna DAL, BSc. Student
Metallurgical and Materials Engineering
Yıldız Technical University
Glass-Ceramic Coating for Steel Rebar for Construction Industry
Co-Supervisor: Nurullah Çöpoğlu
Glass-ceramic materials are inorganic polycrystalline material that shows the ceramic properties as well as glass. They can be produced by several heat treatments that result in controlled nucleation and crystallization of the glass. The basis of controlled internal crystallization lies in effective nucleation, which allows the development of fine, randomly oriented grains generally without voids, microcracks, or other porosity . These are most commonly made by forming special base glasses, mostly by melting, and then using controlled heat treatment to nucleate and precipitate crystals in the glassy matrix . The most common nucleating agents are TiO2 (titanium dioxide) and ZrO2 (zirconium dioxide) and these oxides demonstrate minimal thermal expansion partial solubility in viscous melts . The glass-ceramic coating is used for reinforcement steel in concrete structures owing to providing advantages such as high mechanical properties, flexibility, and applicability for various applications. However, the main advantage of this study of glass-ceramic coating for steel rebar creates the physical barrier between the steel bar and the corrosive environment . The aim of the study is that enhancing the corrosion resistance of the steel rebar by coating with glass-ceramic. This study consist of production methods of process steps of glass-ceramic coating respectively are frit preparation, substrate preparation of steel rebar, application (spray, dipping, and electrophoresis methods), drying between 80 °C-120 °C and, after all firing between 840 °C-850 °C.
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