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Notice D’encyclopédie Ou De Dictionnaire Année : 2020

Glazes and enamels

Résumé

In the form of glazes and enamels, thin glass coatings are deposited on pottery, glass and metal surfaces for aesthetic reasons and also to tighten porous bodies and harden their surfaces. In this chapter, the preparation, composition, coloration, thermal expansion, micro-and nano-structures of these glass coatings are first surveyed. Attention is in particular paid to the optimization of thermal expansion matching upon cooling and heating, wetting properties and softening temperatures. In addition, the thinness of the coatings requires specific colouration techniques by pigments or metal nanoparticles, which is why a very large variety of compositions had to be used throughout the ages. The history of coatings on metal (Celtic, Limoges, and Chinese cloisonnés enamels), on glass objects (Roman/Ptolemy to Mamluks and then Renaissance) and on potteries (terra cotta, stoneware, fritware, and porcelain) is then reviewed along with their preparation routes (ashes, rocks) and compositions. Technical exchanges, as well as the different techniques used to obtain similar visual effects are addressed with emphasis on the most innovative productions including Tang/Yuan/Song porcelain, Abbasid/Fatimid lustre pottery, Chinese/Vietnamese stoneware and celadons, Japanese Raku, Iznik fritware, and European soft-, hard-and hybrid-paste porcelains. The chapter ends with the 19 th century technical revolution, the Craft and Japonism movements and modern/contemporary production.
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Dates et versions

hal-03975366 , version 1 (06-02-2023)

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  • HAL Id : hal-03975366 , version 1

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Philippe Colomban. Glazes and enamels. Encyclopedia of Glass Science, technology, History and Culture, 1st Edition, 2020, pp.‎ 978-111879942. ⟨hal-03975366⟩
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