首页> 外文期刊>Archaeometry >ELECTRON BACKSCATTER DIFFRACTION (EBSD): A NEW TECHNIQUE FOR THE IDENTIFICATION OF PIGMENTS AND RAW MATERIALS IN HISTORIC GLASSES AND CERAMICS
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ELECTRON BACKSCATTER DIFFRACTION (EBSD): A NEW TECHNIQUE FOR THE IDENTIFICATION OF PIGMENTS AND RAW MATERIALS IN HISTORIC GLASSES AND CERAMICS

机译:电子背散射(EBSD):一种用于识别历史玻璃和陶瓷中颜料和原料的新技术

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摘要

Coloured samples of glass and ceramic were selected for EBSD investigation to verify the potential (advantages and limitations) of this technique in the characterization of the raw materials used and the neoformation phases originating from the manufacturing processes. In the case of copper-bearing red glasses, it was verified that micrometric droplets, residuals of the original copper source, can be ascribed to metallic copper or to a low-Sn bronze, due to strongly similar lattice parameters. From the same samples, micrometric flakes were identified by EBSD as magnetite and interpreted as residues of the reducing agent used in the production of such red glasses. Further, the technique allowed the pigment responsible for the yellow colouring of some incised slipware to be recognized as bindheimite. In a third case, the black pigment, contained in some Nestorian decorated pottery, was identified as an amorphous phase of Mn oxide. The accurate identification of the colouring particles and other products or materials offered a more precise comprehension of the production technique, period and site of the examined artefacts, together with scientific parameters for the identification of the raw materials, their transformation during the production cycle and an evaluation of the most reliable recipes used for their preparation.
机译:选择玻璃和陶瓷的有色样品进行EBSD研究,以验证该技术在表征所用原材料和源自制造工艺的新形成阶段中的潜力(优点和局限性)。对于含铜的红色玻璃,已证实,由于非常相似的晶格参数,微米滴(原始铜源的残留物)可归因于金属铜或低Sn青铜。从相同的样品中,EBSD将微米级薄片鉴定为磁铁矿,并解释为用于生产这种红色玻璃的还原剂的残留物。此外,该技术允许将导致某些切开的滑件变黄的颜料识别为黏铁矿。在第三种情况下,某些Nestorian装饰陶器中包含的黑色颜料被鉴定为Mn氧化物的非晶相。着色颗粒和其他产品或材料的准确识别可以更精确地理解所检查人工制品的生产技术,周期和位置,以及用于鉴定原材料,在生产周期内进行转化的科学参数。评估用于其制备的最可靠配方。

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