Reproduction of Jun-red glazes with nano-sized copper oxide
| Autor: | Congxu Zhu, Wenjun Fa, Hongxiao Zhao, Xuliang Zhu, Lu Qiang, Yabing Wang, Zhi Zheng |
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| Rok vydání: | 2017 |
| Předmět: |
Copper oxide
Materials science Reducing atmosphere Glaze Metallurgy Nanoparticle chemistry.chemical_element 02 engineering and technology 010502 geochemistry & geophysics 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Copper Red Color chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Chemical engineering Materials Chemistry Ceramics and Composites 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Journal of the American Ceramic Society. 100:4562-4569 |
| ISSN: | 0002-7820 |
| DOI: | 10.1111/jace.14989 |
| Popis: | Nano sized copper oxide was firstly employed for producing Jun-red glazes. A series of Jun-red glazes were prepared by adjusting the copper oxide nanoparticle content and the valance state of elemental copper in the glaze matrix. The coloring and microstructure of each glaze was investigated by spectrophotometer, XRD, SEM, XPS and TEM. Under reducing conditions, the red glaze color gradually darkens with increasing CuO content from 0.5 to 1.0 wt %. Interestingly, the coloring of the samples fired under reducing atmosphere turned to be green-blue, when the content of nanosized CuO was increased to 1.5 wt %. We also found that increased CuO content increases the size of phase separation in the glazes. As comparison, the coloring of samples fired without nanosized CuO are slightly blue under reducing atmosphere, which is attributed to the structural color generated owing to the Rayleigh scattering. Red color of the Jun glazes may arise from elemental copper nanoparticles. The current research utilizing modern nanotechnology provides a new insight into both the “furnace transmutation” and “color regulating” of the ancient Jun-red glazes. This article is protected by copyright. All rights reserved. |
| Databáze: | OpenAIRE |
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