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Paper Information

Journal:   SHAHID CHAMRAN UNIVERSITY JOURNAL OF SCIENCE   SUMMER 2003 , Volume NEW SERIES , Number 11 (SECTION B); Page(s) 54 To 70.
 
Paper: 

AN INVESTIGATION ON DETERIORATION OF SOME IRANIAN HISTORICAL GLASSES

 
 
Author(s):  SEMNANI A.A.F.*, HEMAT M., RISMANCHIAN F.
 
* FACULTY OF SCIENCE, SHAHREKORD UNIVERSITY, SHAHREKORD, IRAN
 
Abstract: 

By employing scanning electron microscopy (SEM), atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES) and x-ray fluorescence (XRF), eighteen historical samples have been studied. The samples belong to the sasani period. The results are indicative of a profound decrease in alkali ions, itself a result of ion exchange with water. The composition of dispersed particles in samples are identified and discussed. As a result of employing botanical ash in glass production, in all samples the amount of Na2O is more than K2O. The samples were divided into two groups, based on the percentage of Si02 being less or more than 60%. In the first group, crusted surface and in the second, pit formations are observed. The reasons for such observations are explained. Finally, based on the results, some comments have been presented for the restoration and conservation of the historical glasses.

 
Keyword(s): SCANNING ELECTRON MICROSCOPY, ATOMIC SPECTROSCOPY, HISTORICAL GLASSES
 
References: 
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