The effect of Sb3+ & Sn2+ during the heat treatment of copper ruby alkali silicate glasses is investigated. The reducing power of SnO & Sb2O3 with respect to Cu is investigated & it is concluded that SnO has the strongest reducing capability. When Cu2O & SnO concentrations are low, minor additions of Sb2O3 have an observable impact on colour development & absorbance, as thin pieces of glass develop a bluish tint & a larger shift towards longer wavelengths is observed in UV/vis spectra. The differences in colour & spectra are suggested to be caused by differences in size of the colour forming agent, Cu metal particles.
Origin
Sweden
Journal Title
Glass Technology June 2007 Volume 48 3 142-148
Sector
Special Glass
Class
S 3300