About this Abstract |
Meeting |
MS&T23: Materials Science & Technology
|
Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
Presentation Title |
Investigation of Glasses Containing Heavy Metal Oxides as a Replacement to Lead Oxide |
Author(s) |
Elizabeth M. Tsekrekas, Alexis G Clare |
On-Site Speaker (Planned) |
Elizabeth M. Tsekrekas |
Abstract Scope |
Ternary alkali borate glasses containing heavy metal ions were fabricated and their structural and physical properties were investigated. Lead oxide is one of the longest standing additives in glass production and is often used to increase durability, index of refraction and electromagnetic shielding properties. Because of the toxicity of lead, it is advantageous to identify different non-toxic additives that result in similar properties. Heavy metal oxides such as bismuth oxide and tungsten oxide are examples of ideal replacements because they are comparatively less toxic than lead oxides. Various properties of these glasses were compared to the properties of leaded glasses to determine which heavy metal oxide most closely replicates the effect of lead oxide within a system. Raman and infrared reflectance spectroscopy were used to investigate structural differences, and other physical and thermal properties were investigated and compared to lead containing glasses. |