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Meeting MS&T22: Materials Science & Technology
Symposium Glasses and Optical Materials: Current Issues and Functional Applications
Presentation Title D-18: Tungsten Borate – A Replacement for Lead in Glass
Author(s) Elizabeth M. Tsekrekas, Alexis G Clare
On-Site Speaker (Planned) Elizabeth M. Tsekrekas
Abstract Scope Heavy metal oxide glasses are often of great interest for their ability to be used as an alternative to lead-based glasses, and example of which is radiation shielding applications. In addition, it is desirable to find suitable applications for recycled lead-based glasses to reduce the production of new glasses. In a twofold-effort to find a replacement for lead and an application for recycled lead, glass microspheres from ternary tungsten borate systems and recycled lead glass were produced and compared. To create microspheres, glasses were crushed into small frit and fed into a propane/oxygen torch. Microsphere size and shape were analyzed through the use of a SEM. Raman spectroscopy was preformed on the glass to determine structural units within the network. In addition, physical, thermal, and optical properties were measured and compared between the fabricated ternary tungsten borate and recycled lead glasses.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Mapping of Glass Indentation Stress Fields
Continuation of the Investigation of Double Ion-exchange in Mixed Alkali-lime Silicate Glasses
D-13: Flow Dissolution of Lithium Disilicate Glass under Aqueous Conditions
D-15: Natural Glasses – Findings from an Undergraduate Project
D-17: Sulfur Blue Glasses - S3- Anion Charge Transfer Transitions
D-18: Tungsten Borate – A Replacement for Lead in Glass
D-19: Unusual High Oxidation States of Transition Metal Ions in Silicate Glasses of High Optical Basicity: Trivalent Co3+ and Ni3+
Effect of Ion-exchange Strengthening on the Mechanical Behavior of Sodium Aluminophosphosilicate Glass
Effect of Modifier Cation Type on Structure and Nickel Speciation in Alkali Borosilicate Glasses
Glass Structure-Terahertz Properties Relationship: Power-Law Model and Deviations in Sodium Borosilicate, Tellurite, and Chalcogenide Glass Families
Intermediate-range Order in Organic Glasses
Ionic Glasses: An Emerging Separate Class of Amorphous Materials with Unique Topology and Dynamic Properties
Lithium-iron Silicate Glasses as Simulations of High-Fe Nuclear Waste Glass
MD Simulations of SLS Batch Melting
Multispectroscopic Study of Lead Borate Glasses
Oxygen Triclusters and Five-Coordinated Alumina Species in Calcium-aluminosilicate Glasses
Structural Relaxation Mechanism of Anisotropic Alkali Metaphosphate Glass
Structure-property Relationship in Mixed Oxy-sulfide Glassy Solid Electrolyte Material: 0.58Li2S + 0.42 [(1–y­)SiS2 + yLiPO3]
The Dissolution of Lithium Disilicate Glass under Ultrasonic Cavitation
The Problem with Lead
Uncovering Hidden Glasses
Utilizing Electrical Impedance Spectroscopy (E.I.S.) to Observe In-situ Phase Changes in Lithium Diborate Glass Undergoing Thermal Relaxation

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