Development and characterization of low temperature metallic glazes in Na2O-B2O3-SiO2 (NBS) system
| Autor: | Mustafa Daday, Nergis Kilinç Mirdali, Mine Taykurt Daday |
|---|---|
| Přispěvatelé: | Çukurova Üniversitesi, Çukurova Üniversitesi, Güzel Sanatlar Fakültesi, Seramik Bölümü, Kılınç Mirdalı, Nergis |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Reductive atmosphere Scanning electron microscope Nucleation chemistry.chemical_element 02 engineering and technology 01 natural sciences law.invention Crystal Metal Optical microscope law 0103 physical sciences Materials Chemistry Crystallization 010302 applied physics Process Chemistry and Technology Glaze 021001 nanoscience & nanotechnology Copper Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Chemical engineering visual_art Ceramics and Composites visual_art.visual_art_medium Metallic glaze 0210 nano-technology Crystal formation |
| Popis: | This paper presents the results of an investigation into crystal formation in NBS system for glaze with metallic appearance experimentally produced by embedding metallic substances as AgNO3, BaCl2, CuSO4 and CuCO3 and their characterizations. Composition of NBS was calculated by using Seger Method. According to the quantity of components, crystal phases were marked on Na2O-B2O3-SiO2 ternary diagrams. The amount of AgNO3 (2 wt%) was kept constant that other metallic substances (BaCl2, CuSO4 and CuCO3) were added in an amount of 5 wt% as had an impact on the mechanism of crystalline phase growth. These glaze compositions were applied over the surface of the commercial bodies and fired at 1040 °C, cooled to 750 °C and then reduced in the reductive atmosphere in order to obtain metallic layer on glaze surfaces for 20 min. These glaze layers characterized under mineralogical, microstructural and chemical points of view by means of X-Ray Diffraction (XRD), optical microscopy (OM), Scanning Electron Microscopy coupled with Energy Dispersive X-ray (SEM-EDX) and Ulltraviolet Visible Spectroscopy (UV–Vis) techniques. The results showed that silver and copper particles/crystals developed near/on the glaze surfaces creating multicolored metallic shine. Diffusion of metallic particles/crystals shown on the glazed layers as Ag and Cu followed by nucleation and growth in a reductive atmosphere. © 2019 Elsevier Ltd and Techna Group S.r.l. |
| Databáze: | OpenAIRE |
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