Achieving tunable sky-blue copper glaze and coloring mechanism by the introduction of phosphorus. Issue 5 (May 2019)

• Record Type: Journal Article
• Authors: Zhang, Biao; Zhu, Jianfeng; Shi, Pei; Wang, Fen; Wang, Jiahuan; Ren, Zhao
• Is Part Of: Journal of the European Ceramic Society. Volume 39:Issue 5(2019)
• Page Start: 1925
• Page End: 1931
• Publication Date: 2019-05
• Subjects: Copper glaze -- Phosphorus -- Spatial density of oxygen atom -- Rayleigh scattering; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2019.01.025
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: This work was aimed to explore the relationship between phosphorus and coloring of copper glaze under oxidizing atmosphere. The phase, microstructure and chemical state of the samples were investigated by X-ray diffraction, Scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. The results indicated that the addition of phosphorus broke up the silica network and decreased the viscosity of glaze melt, and then promoted the formation of discrete droplet phase-separated structures. Thus, blue opalescence was formed by the Rayleigh scattering on the sky-blue copper glaze surface. In addition, the reversed polarization of P 5+ acted on the Cu–O bond and decreased the ratio of Cu 2+ and Cu + . It increased the number of non-bridging oxygens and the spatial density of oxygen atoms around Cu 2+, which was the essence of the copper blue glaze. Coupling of the structural color and the chemical color made the sky-blue copper glaze get more vivid.