Study of sauce glazed wares from Yaozhou kilns (Northern Song Dynasty, 960–1127 CE): Probing the morphology and structure of crystals in the glazes

Ren, Zhao; Wang, Fen; Holé, Clément; Sciau, Philippe; Shi, Pengfei; Zhu, Jianfeng; Luo, Hongjie; Li, Qiang

doi:10.1016/j.jeurceramsoc.2022.08.013

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…Spectra recording at brown areas (Figure 3A) present very complex Raman features with bands locating around 158, 179, 239, 300, 363, 422, 458, 571, 696, 775, and 1378 cm À1 , consistent with characteristics of ϵ-Fe 2 O 3 , a rare polymorph of iron oxides. [23] Such metastable crystal has been observed in several types of Chinese ancient ceramics, including of the sauce glazed wares excavated in the Qingliang Temple Ruins, [24] the Qilizhen kilns [25] and Yaozhou kilns, [26,27] and purple-gold glazed wares from the Jingdezhen Imperial kilns. [28] Spectra recording at black areas (Figure 3B) show no any crystalline signal but typical characteristics of glassy matrix with two obvious broad bands at $500 and 1000 cm À1 .…”

Section: Crystals In Glazementioning

confidence: 99%

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Qian

Wang

et al. 2023

J Raman Spectroscopy

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Black glazed wares (Wujin wares) and hare fur's decorated black glazed wares (HF wares) are ones of typical production of Jian kilns, China during Song Dynasty. In this work, Wujin wares and HF wares excavated in Jian kiln complex (Yulinting kilns, Daluhoumen kilns and Luhuaping kilns) were systematically analyzed by optical microscope, X‐ray fluorescence spectroscopy and micro‐Raman spectroscopy. The results show that the index of glassy polymerization (Ip) of Wujin wares is smaller than black areas of HF wares, indicating the higher firing temperature used for HF wares. Several pseudobrookite, rutile, hematite and quartz crystals were detected in glazes of Wujin wares while a great number of ɛ‐Fe2O3 crystals was observed in brown stripes of HF wares. Besides, wares in different kiln sites present obviously differences in bubble distribution and glassy structure, indicating a lower firing temperature used for Yulinting kilns than those of Daluhoumen kilns and Luhuaping kilns.

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Section: Crystals In Glazementioning

confidence: 99%

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Qian

Wang

et al. 2023

J Raman Spectroscopy

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“…These glazes were much appreciated during the Song period (Crick, 2013) and are still highly regarded today, with some exceptional bowls considered national treasures in Japan (Song Ceramics, 1999). Several studies have been carried out on ancient samples and highlighted typical dendritic micro-and nanostructures (Dejoie et al, 2014;Wang et al, 2019Wang et al, , 2021Wen et al, 2019;Ren et al, 2022). This set of samples was shown to display comparable dendritic structures, which contain two iron oxide polymorphs among other phases: "-Fe 2 O 3 and hematite (�-Fe 2 O 3 ) (Hole ´et al, 2022).…”

Section: Introductionmentioning

confidence: 98%

Study of the epitaxy between ɛ-Fe₂O₃, hematite and spinel in brown-glazed Chinese ceramics using electron diffraction mapping techniques

Holé,

Brunet,

Joulié

et al. 2024

J Appl Crystallogr

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Black-to-brown Chinese ceramics have sparked the interest of material scientists since the widespread discovery of complex dendritic structures containing mainly the rare ɛ-Fe2O3 polymorph in their glazes. This study proposes to tackle this issue using two electron diffraction mapping techniques, transmission Kikuchi diffraction and automated crystal orientation mapping–precession electron diffraction, which have not been fully exploited despite their relevance for studying these structures at the scales of interest. It first demonstrates the efficiency of applying these techniques to characterize the structures at the nanoscale and discusses some limitations that may be encountered, in particular due to the specificity of heritage samples. It then focuses on the crystalline orientations obtained with these techniques, which highlight epitaxial relationships among the crystalline planes (001) of the ɛ-Fe2O3 phase, (0001) of the hematite and (111) of the spinel. Finally, it discusses the growth of such complex multi-phase structures by proposing two possible mechanisms, one based on the transformation of ɛ-Fe2O3 into hematite and spinel, and the other based on the growth of hematite and spinel on already crystallized ɛ-Fe2O3 dendrites. It also compares the dendritic structures of the two modern samples with those found in an ancient sample of Jian ware.

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Microstructural Study of the Coloring Variation of Chinese Sauce Glaze Replications

Wang,

Xia,

Ren

et al. 2024

J Raman Spectroscopy

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Sauce glazed wares of Yaozhou kilns are famous for their high gloss and distinctive glaze color palette varying from yellowish‐brown to reddish‐brown. In this work, sauce glazes were successfully replicated using the traditional technology of Yaozhou kilns. Micro‐Raman spectroscopy, combined with optical microscopy, scanning electron microscopy, x‐ray fluorescence, and reflective spectroscopy, was systematically applied to analyze the chemical composition, nature and distribution of crystals, and the coloration of the glazes. The results show that the yellowish‐brown glaze is mainly original from dendritic ε‐Fe2O3 crystals, whereas the reddish‐brown color is mainly derived from dendritic hematite crystals. Such dendritic structure could account for slightly color variations of the glaze surface observed in different angles, which also reported in Japanese Bizen ceramics. The principal component analysis (PCA) was further applied to study the Raman spectra of these iron oxides. The PCA results effectively indicates the structural disorders of these crystals introduced by ion substitutions. These substitutions could not only stabilize the crystals but also darken the crystals color. Besides, high Mg in the raw materials was found to benefit the growth of magnesioferrite crystals. The relative low level of Fe2O3, high level of SiO2, and CaO may relate to the formation of ε‐Fe2O3 crystals.

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Study of sauce glazed wares from Yaozhou kilns (Northern Song Dynasty, 960–1127 CE): Probing the morphology and structure of crystals in the glazes

Cited by 6 publications

References 19 publications

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Study of the epitaxy between ɛ-Fe₂O₃, hematite and spinel in brown-glazed Chinese ceramics using electron diffraction mapping techniques

Microstructural Study of the Coloring Variation of Chinese Sauce Glaze Replications

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Study of sauce glazed wares from Yaozhou kilns (Northern Song Dynasty, 960–1127 CE): Probing the morphology and structure of crystals in the glazes

Cited by 6 publications

References 19 publications

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Micro‐structural study of crystals and glassy matrix of black glazed wares from Jian kilns, China (Song Dynasty, AD 960–1279)

Study of the epitaxy between ɛ-Fe2O3, hematite and spinel in brown-glazed Chinese ceramics using electron diffraction mapping techniques

Microstructural Study of the Coloring Variation of Chinese Sauce Glaze Replications

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Study of the epitaxy between ɛ-Fe₂O₃, hematite and spinel in brown-glazed Chinese ceramics using electron diffraction mapping techniques