The role of sulphur in the early production of copper red stained glass

Yuan, Mingyue; Bonet, Jordi; Cotte, Marine; Schibille, Nadine; Gratuze, Bernard; Pradell, Trinitat

doi:10.1016/j.ceramint.2023.02.236

Cited by 2 publications

(1 citation statement)

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“…In order to understand the thermal protocols and the recipes that the ancient craftsmen could have followed to obtain the sulfide particles' presence, laboratory replicas have been implemented and the results will be presented in a forthcoming paper. At the same time, some studies on red glasses reported the presence of copper sulfide spherical particles and may allow us to better understand their formation [51][52][53][54][55].…”

Section: Discussion and Contextualization Of The Production Technique...mentioning

confidence: 99%

Comparative Study of Architectural Bricks from Khorsabad and Susa Sites: Characterization of Black Glazes

Beauvoit,

Bouquillon,

Majérus

et al. 2023

Heritage

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In this study, the well-preserved glazes of 13 colored bricks representative of the decoration of the palaces of Sargon II (Khorsabad, 8th century BC) and of Darius I (Susa, 6th century BC) were examined. The purpose of this research is to gather information about the ancient brick manufacturing processes by examining the colored glazes and, in particular, black glazes using a combination of methods that included optical microscopy, SEM-EDX, synchrotron µ-XRD, and µ-Raman spectroscopy. The results revealed different coloring techniques for producing black glazes in the Neo-Assyrian and Persian Achaemenid periods. Regarding the black glazes of Susa, it is particularly interesting to note that their chemical composition varies according to the function of the glazes on the bricks: manganese oxide (for colored fields of glaze) and iron-rich compounds (for raised lines separating glazed areas). In comparison, the black glazes from Khorsabad are characterized by the presence of spherical copper sulfide and galena nanoparticles (ranging from less than 100 nm to about 1 µm) for both the glazed areas and the separating lines. This coloring technique to obtain black glazes is very rarely described in the literature, as well as the mechanism of formation of these spherical nanoparticles.

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Section: Discussion and Contextualization Of The Production Technique...mentioning

confidence: 99%

Comparative Study of Architectural Bricks from Khorsabad and Susa Sites: Characterization of Black Glazes

Beauvoit,

Bouquillon,

Majérus

et al. 2023

Heritage

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Changsha ware glaze color: Composition, nanostructure, and copper and iron speciation

Yuan,

Hou,

Zhang

et al. 2024

J Am Ceram Soc.

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The opacity/transparency, color, and production of designs in Changsha ware, a Tang dynasty Chinese stoneware renowned for its polychromy and pioneering high‐temperature red glaze, are studied by analyzing the composition, micro/nanostructure, and copper/iron speciation. The results shed new light on some of the most debated questions about Changsha ware. In particular, the role of glaze thickness, composition, and firing conditions on the coexistence of transparent and opaque glazes and of oxidized green and reduced red copper designs on the same object, and on the reason for the development of either green or turquoise colors. New data obtained by reproducing a copper red overglaze and underglaze painting with a similar glaze composition and thickness have provided new insights into the origin of the first high‐temperature copper reds and, in the absence of essential knowledge, their discontinuity. This study also contributes to the long debate regarding the use of overglaze versus underglaze painting techniques.

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The role of sulphur in the early production of copper red stained glass

Cited by 2 publications

References 38 publications

Comparative Study of Architectural Bricks from Khorsabad and Susa Sites: Characterization of Black Glazes

Comparative Study of Architectural Bricks from Khorsabad and Susa Sites: Characterization of Black Glazes

Changsha ware glaze color: Composition, nanostructure, and copper and iron speciation

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