Obtaining and Characterisation of Thermoresistive Pigments

Andrei Victor SANDU; Violeta VASILACHE; Ion SANDU; Mihaela SAVIUC; Ioan Gabriel SANDU; Ioan Marcel POPA

Auteur/ices

Andrei Victor SANDU Romanian Inventors Forum, Iaşi, Romania
Violeta VASILACHE "Stefan cel Mare" University of Suceava, Romania
Ion SANDU "Al. I. Cuza" University of Iasi, Romania
Mihaela SAVIUC "Gheorghe Asachi" Technical University of Iasi, Romania
Ioan Gabriel SANDU "Gheorghe Asachi" Technical University of Iasi, Romania
Ioan Marcel POPA "Gheorghe Asachi" Technical University of Iasi, Romania

Mots-clés :

chemical doped zinc oxide, thermoresistive pigment, mosaic, stained glass, SEM-EDX, TG/DTA

Résumé

The paper describes the obtaining and chemical and physico-structural characterisation of a green thermoresistive pigment. The pigment is made of ZnO dopped with Sb, Bi, Cr, Co and Fe oxides and it is used at mosaics and stained glass. The procedure is based on a sequential coprecipitation “layer on layer” process in aqueous solution, followed by drying and calcinations at controlled temperature conditions, then grinding in a colloidal mill and mixed with glass powder forming the “frit pigment”. This by vitrification and frosting colours superficial the glass.
The powder was analysed by SEM-EDX and DSC.