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A combined spectroscopic study on Chinese porcelain containing ruan-cai colours

机译:含彩彩中国瓷的组合光谱研究

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Because of its major contributions to the world economy and cultural heritage, Chinese porcelain and its technology can be considered as very important. In this research, the applicability of Raman spectroscopy and X-Ray Fluorescence (XRF) spectroscopy to study the pigments of the ruan-cai colour palette of Chinese porcelain dating from the 18th century was evaluated, Next to the investigations based on stylistic analysis, the use of other analysis techniques is important to obtain complementary information. Raman spectroscopy and XRF spectroscopy are two non-invasive, analytical techniques proven to be useful for the determination of the nature and composition of pigments used to decorate ceramics. As a result, analytical analysis allows us to retrieve more information about the production of Chinese porcelain. Based on visual inspection of the decoration, the objects could be divided into two groups and to evaluate the use of the combined analytical approach, all groups and subgroups were sampled. Before Raman and XRF analyses, the samples were cut, embedded and polished, in order to be able to measure the transversal section of the samples. In this way, each layer of the porcelain samples could be analysed separately. The results show that the blue colour is cobalt-aluminium oxide, in red zones haematite (α-Fe2O3) is present and the green area contains a mixture of CuO in a lead-rich basis and a solid solution of malachite (Cu2CO3(OH)2). The opaque yellow and white colours were identified as lead tin yellow type II (PbSn_(1-x)Si_xO3, where x ~ 0.25) and a lead arsenate, respectively.
机译:由于其对世界经济和文化遗产的重大贡献,中国瓷器及其技术被认为是非常重要的。在这项研究中,评估了拉曼光谱和X射线荧光光谱(XRF)光谱学用于研究18世纪中国瓷器阮彩调色板颜料的适用性,然后在基于风格分析的研究基础上,使用其他分析技术对于获取补充信息很重要。拉曼光谱法和XRF光谱法是两种非侵入性分析技术,被证明可用于确定用于装饰陶瓷的颜料的性质和组成。结果,分析分析使我们能够检索有关中国瓷器生产的更多信息。根据装饰的外观检查,可以将对象分为两组,并通过组合分析方法评估使用情况,对所有组和子组进行采样。在进行拉曼和XRF分析之前,先将样品切割,嵌入和抛光,以便能够测量样品的横截面。这样,可以分别分析瓷器样品的每一层。结果表明,蓝色为钴铝氧化物,在红色区域中存在赤铁矿(α-Fe2O3),绿色区域包含富铅的CuO和孔雀石的固溶体混合物(Cu2CO3(OH) 2)。不透明的黄色和白色分别标识为铅锡黄色II型(PbSn_(1-x)Si_xO3,其中x〜0.25)和砷酸铅。

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