Nagwa Abdel-Rahim


The dish was made by the  cuerdasecaceramic technique which was used glaze-decorated ceramics, appeared in  al-Andalusin the Islamic period, it was excavated at Al Fustat, Egypte, and it dates back to the Mamluk Period date to 13th to 15th century. It was excavated byAntiquities Authorityand then added to the Faculty of Applied Arts, Helwan University, and wasdisplayed in the college museum in 1945. The dish was restored for the first time with suitablematerials, but after many years it was failed and restored for the second time with unsuitable materials that turned into several parts separated, especially at the rimand suffered from many deterioration phenomena, including, cracks, and decay. Furthermore, many shards are broken from the body and some are missing. The aim of the present paper is to study the chemical and the mineralogical composition of the clay body, the glaze and unsuitable materials which used in complication to study the object and restore it. Different analytical methods were used including; Optical microscopic study (Cross sections).X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS). The results obtained by (XRD) reported that the clay body composition: Quartz, orthoclase, albite, gehlenite and magnetite. The presence of gehlenite indicates that the firing temperature was between 750 and 1050 ᵒC.Different restoration treatments were carried out on the dish comprising; mechanical and chemical cleaning, consolidation, bonding and replacement processes.

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