期刊
JOURNAL OF CULTURAL HERITAGE
卷 9, 期 -, 页码 E134-E137出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.culher.2008.08.003
关键词
Gold ruby glass; Copper ruby glass; Nanoparticles; Gamma radiation; Striking
类别
资金
- Fundacao para a Ciencia e a Tecnologia (FCT) [POCI/EAT/60496/2004]
- Fundação para a Ciência e a Tecnologia [POCI/EAT/60496/2004] Funding Source: FCT
Gold ruby glass was made by irradiating a soda-lime-silicate glass with ca. 0.2 weight % of gold with gamma rays and further heating instead of using a reducing agent such as stannous oxide. Different colours were obtained by controlling the temperature and heating times. A comparison of this process to develop ruby glass with the conventional ones is discussed. Ruby glass was also made by dissolving gold metal in soda-lime-silicate glass and using stannous oxide at 1500 degrees C. The colour of the gold ruby glass is due to the presence of gold nanoparticles. A small purple-red 17th century glass vase was also studied and it was found to contain only manganese as the colouring agent; in this case the colour is due to electronic d-d transitions. A tentative experiment to reproduce the colour of this vase showed that the oxidation conditions are critical. (C) 2008 Elsevier Masson SAS. All rights reserved.
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