|About this Abstract
||Materials Science & Technology 2019
||Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
||Ultrasonic and Vibration Enhanced Materials Processing
||William LaCourse, Kade McGarrity, Brian Topper, Holly Shulman, Amit Maha, Volker Geyer
|On-Site Speaker (Planned)
Ultrasonic enhanced processing, an important industrial tool, is based on cavitation effects in liquids and/or induced mechanical stresses in viscous liquids and in solids. The present paper reviews existing and potential applications in processing and post-forming modification of polymers, glasses and ceramics, primarily by vibration-altered, stress-assisted diffusion and viscous flow processes. Proposed solid-surface modification by cavitation induced surface diffusion is also considered. Current and potential applications in processing include: 1: Glass melting, fining and homogenization 2: Sintering – Cold sintering. 3: Extrusion and molded optics. 4: Rapid annealing and enhanced stabilization of glass structures at high viscosity (> 1012 Pa-s). 5: Accelerated, and/or spatially enhanced ion-exchange and chemical strengthening. Mechanisms for enhanced diffusion and viscous flow limited processes are described. Current opportunities and the factors limiting wide-spread use, e.g.the lack of suitable high temperature materials, are discussed.
||Planned: At-meeting proceedings