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Hydrolytic resistance of K2O–PbO–SiO2 glasses in aqueous and high-humidity environments

AuthorsPalomar Sanz, Teresa ; Mosa Ruiz, Jadra ; Aparicio, Mario
KeywordsLead silicate glasses
Hydrolytic attack
Issue Date7-May-2020
PublisherAmerican Ceramic Society
CitationJournal of American Ceramic Society (2020)
Abstract[EN] Some historical glasses (lead-wood ash glasses, lead-crystal glasses…) are silicate glasses with high content of lead and potassium. This work presents the evaluation of the chemical stability of high-lead glasses in a high relative humidity atmosphere and as result of aqueous immersion. In both situations, the alteration mechanism begins with the lixiviation of alkali metal and lead ions, followed by the hydrolytic attack of the silica glass network. According to the results, the glasses with a higher content of lead show the fastest degradation due to their higher hygroscopicity. Environmental CO can be dissolved in the adsorbed water and favor the formation of intermediate degradation compounds.
Publisher version (URL)http://dx.doi.org/10.1111/jace.17202
Identifiersdoi: 10.1111/jace.17202
e-issn: 1551-2916
issn: 0002-7863
Appears in Collections:(ICV) Artículos
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