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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Microtextures recording melting-history of a medieval glass cake
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Microtextures recording melting-history of a medieval glass cake

机译：微观纹理记录了中世纪玻璃蛋糕的熔化历史

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摘要

Glass cakes are particular historical glass artefacts, the use of which is not ascertained yet, They are semifinished product ingots traded from suburban glasshouses as raw material. Whether they were used to produce worked-glass, jewellery, or enamelware or they were tools used to sleek skin, paper, and textiles, is still debated. An analytical investigation of a glass cake, combining microtextural studies and modelling using pertinent phase diagrams has demonstrated that microtextures of mineral phases within the glass mass result from a complex melting process implying: peritectic-type reactions giving rise to wollastonite crystallization and subsequent reabsorbing of wollastonite when the peritectic temperature is exceeded. Analogous microtextures are shown by K-Al-phases. The melting behavior of a batch, to produce glass, thus represents a complex process that is not possible to model linearly, as commonly believed. It consists of a reaction-path where partial melting is accompanied by separation of crystal phases that, later on dissolved. The composition of the volumetrically dominant glass infers a melting temperature of about 1150 degreesC. (C) 2004 Elsevier B.V. All rights reserved.
机译：玻璃饼是历史悠久的特殊玻璃制品，尚未确定其用途。它们是从郊区温室出售的半成品锭，作为原料。究竟是将它们用于生产人造玻璃，珠宝或搪瓷器，还是用于使皮肤，纸张和纺织品光滑的工具，仍存在争议。对玻璃饼的分析研究，结合微观结构研究和使用相关相图的建模，已经表明，玻璃块中矿物相的微观结构是由复杂的熔融过程产生的，这意味着：包晶型反应会导致硅灰石结晶并随后吸收硅灰石。当超过包晶温度时。类似的微观纹理用K-Al相表示。因此，通常认为，生产玻璃的批料的熔融行为代表了复杂的过程，无法进行线性建模。它由一条反应路径组成，其中部分熔融伴随着结晶相的分离，随后溶解。体积占优势的玻璃的组成推断出熔融温度为约1150℃。 （C）2004 Elsevier B.V.保留所有权利。

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