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5 results on '"Tiequan Zhu"'

1. Raman study of Ming porcelain dark spots: Probing Mn‐rich spinels

Author

Philippe Sciau, Tiequan Zhu, Ariane Pinto, J. Groenen, Bing Zhao, Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Sun Yat-Sen University [Guangzhou] (SYSU), Centre de recherche sur les civilisations de l'Asie Orientale (CRCAO), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Collège de France (CdF (institution))-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Collège de France (CdF (institution))-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3)

Subjects
Materials science, Spinel, Analytical chemistry, 02 engineering and technology, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, symbols.namesake, chemistry, Jacobsite, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], engineering, symbols, General Materials Science, 0210 nano-technology, Raman spectroscopy, ComputingMilieux_MISCELLANEOUS, Spectroscopy, Hausmannite
Abstract

International audience

Published
2019
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2. The method to soften the concretions of ceramics in the 'Nanhai I' Shipwreck of China Southern Song Dynasty (1127–1279AD)

Author

Daoyang Ye, Guicheng Yang, Tiequan Zhu, Xian Tan, Haotian Chen, and Yanrong Wang

Subjects
0106 biological sciences, Archeology, Ceramics, lcsh:QD71-142, lcsh:Fine Arts, 010604 marine biology & hydrobiology, 010401 analytical chemistry, “Nanhai I” shipwreck, lcsh:Analytical chemistry, Conservation, 01 natural sciences, Archaeology, 0104 chemical sciences, Archaeological research, Heating and boiling, lcsh:N, Concretions, China
Abstract

The “Nanhai I” shipwreck of the Southern Song dynasty is the existent oldest and the most integrally preserved shipwreck in the world. Inside the shipwreck most of the ancient ceramics were covered with different types of concretions. In our work, different types of concretions were analyzed using stereomicroscopy, X-ray fluorescence (XRF) and X-ray diffraction (XRD). Based on those analyses, we applied a new physical method of heating and boiling to soften the concretions and remove them from the ceramics. It turned out that this method was efficient to remove the white shellfish concretions, gray concretions and red iron concretions, which not only provided a good basis for the preservation of ancient ceramics of the shipwreck, but also benefited the archaeological research on ancient ceramics.

Published
2018
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3. Composition comparison of Zhejiang Longquan celadon and its imitation in Dapu kiln of Guangdong in the Ming Dynasty of China (1368–1644 CE) by LA-ICP-MS

Author

Chengji Liu, Xing Ding, Feng Wu, Min Wang, Weidong Sun, Tiequan Zhu, and Zelin Hui

Subjects
Manufacturing technology, Materials science, Kiln, Process Chemistry and Technology, Ancient time, 010401 analytical chemistry, Metallurgy, Glaze, 010502 geochemistry & geophysics, 01 natural sciences, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, La icp ms, Materials Chemistry, Ceramics and Composites, China, 0105 earth and related environmental sciences
Abstract

Identification of Longquan celadon and its imitation is more and more caught the attention of experts in different fields. In this paper, by using laser ablation- inductively coupled plasma mass spectrometry (LA-ICP-MS) and other analytical methods, body and glaze of samples from Zhejiang Longquan celadon and its imitation in Dapu kiln of Guangdong in the Ming Dynasty of China were determined. Our research reveals that (1) the celadon bodies from the Dapu kiln contain less Al 2 O 3 , Mo, V, Cr and Ni, and more SiO 2 content than those of the Longquan kiln; (2) the celadon glazes from both the Longquan and Dapu kilns show higher content of CaO, Al 2 O 3 , Ba, Sr, P 2 O 5 and MnO than the corresponding bodies; and (3) both the celadon bodies and glazes from the Dapu kiln have higher ΣREE and in particular significantly negative Ce anomalies, distinctly different from those from Longquan kiln. These results would not only provide a good basis to identify the Longquan celadon and its imitation, and even to protract the global trade route in ancient time, but also be beneficial to better understanding the recovery and transmission of Longquan celadon manufacturing technology.

Published
2018
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4. Raman study of Yuan Qinghua porcelain: the highlighting of dendritic CoFe2O4crystals in blue decorations

Author

Magali Brunet, Tiequan Zhu, Philippe Sciau, Christophe Deshayes, and Tian Wang

Subjects
Materials science, Scanning electron microscope, Metallurgy, Spinel, Iron oxide, Analytical chemistry, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Micro raman spectroscopy, chemistry.chemical_compound, symbols.namesake, chemistry, Cobalt ferrite, symbols, engineering, General Materials Science, 0210 nano-technology, Raman spectroscopy, Cobalt, Spectroscopy
Abstract

Raman spectroscopy and scanning electron microscopy equipped with energy dispersive spectrometer (SEM-EDS) were used to analyze the decors of the Yuan blue and white porcelains (Qinghua porcelains). SEM-EDS carried out on the dark spots of the blue decors revealed the presence of dendritic crystals of a mix cobalt iron oxide. The Raman spectra of these crystals are close to the standard spectrum of cobalt ferrite (CoFe2O4). Comparing the Fe/Co ratios obtained by EDS to the corresponding Raman spectra, we have identified two main types of spinel crystals: one type richer in iron and another type richer in cobalt. Both types of spinel cause the blackening of the blue decors. It is the first time that spinel crystals with a composition close to cobalt ferrite were observed as the main constituent of the dark spots in blue decors of Qinghua porcelains. Copyright © 2016 John Wiley & Sons, Ltd.

Published
2016
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5. Synchrotron radiation-based multi-analytical approach for studying underglaze color: The microstructure of Chinese Qinghua blue decors (Ming dynasty)

Author

B. Fayard, Tian Wang, Philippe Sciau, Z.Y. Feng, Tiequan Zhu, Marine Cotte, Murielle Salomé, Emeline Pouyet, W. De Nolf, Matériaux Multi-fonctionnels et Multi-échelles (CEMES-M3), Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Sun Yat-Sen University [Guangzhou] (SYSU), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), European Synchrotron Radiation Facility (ESRF), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Analytical chemistry, Synchrotron radiation, 02 engineering and technology, 01 natural sciences, Biochemistry, Analytical Chemistry, Heterogeneous distributions, ion transport, Methodological approach, X ray fluorescence, iron, Microstructure, Spectroscopy, [PHYS]Physics [physics], analytic method, quantitative analysis, Chemistry, Glaze, Transition metals, particle size, 021001 nanoscience & nanotechnology, cobalt, physical parameters, Coal, priority journal, manganese, Qinghua porcelain, 0210 nano-technology, synchrotron radiation based technique, X ray diffraction, X-ray fluorescence, ceramics, Article, Transition metal elements, micro X ray fluorescence analysis, physical chemistry, Environmental Chemistry, controlled study, intermethod comparison, Hue, Ions, concentration (parameters), 010401 analytical chemistry, XANES, 0104 chemical sciences, Underglaze, Ion distributions, color, Partial substitution, Analytical approach, archeology, aluminum, Porcelain, Particle, oxygen, Synchrotrons
Abstract

cited By 7; International audience; In this paper, we develop a methodological approach combining macro-X-ray fluorescence and synchrotron radiation-based techniques (μXRF, full-field XANES and μXRD) to determine the composition and microstructure of underglaze decors of Qinghua porcelains (Ming dynasty). Various transition metal elements (Fe, Mn, Co) are present in the blue decoration of these ceramics and the approach proposed allows for establishing the feature of each. Thus it shows that Fe ions are distributed homogeneously over the whole glaze without any significant difference in blue and white parts. They do not play a significant role in the color. In contrast, Co ions exhibit a heterogeneous distribution with CoAl2O4 particles close to the body/glaze interphase. These particles play a key role in the blue color and, the hue variations seem in greater part to link to their density and repartition. Co dispersed in the glassy matrix is also bivalent and mainly in tetragonal coordination, leading also to a blue color. Mn ion distribution is similar to the one of Co but without presenting local high concentrations associated to Mn based particles. Mn affects the darkness of the color and for the sample without CoAl2O4 particle; it is the main color contribution. The presence of CoAl2O4 crystals was confirmed by μXRD, which revealed, in addition, a variation of cell parameters certainly linking to a Co partial substitution.

Published
2016
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