| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Effect of Ion-exchange Strengthening on the Mechanical Behavior of Sodium Aluminophosphosilicate Glass |
| Author(s) |
Kasimuthumaniyan S, Allu Amarnath Reddy, N. M. Anoop Krishnan, Nitya Nand Gosvami |
| On-Site Speaker (Planned) |
N. M. Anoop Krishnan |
| Abstract Scope |
The brittleness of glasses restricts their application in structural and load-bearing components. Ion-exchange strengthening is a well-known method for reducing their brittleness by delaying the crack propagation. Herein, we investigate the role of the ion-exchange duration on the mechanical behavior of glasses. The sodium aluminophosphosilicate glass is subjected to ion-exchange in a KNO3 salt bath for varied durations. We employ Vickers micro-indentation to mimic the sharp contact loading on the glass surface and note a significant suppression of the strength-reducing radial-median cracks post ion-exchange. The ion-exchanged glasses exhibit crack resistance (CR) up to 150 N against the 11.2 N CR value for non ion-exchanged glass. Further, we also report the ion-exchange duration-dependent elastoplastic behavior of glasses via nanoindentation. Finally, we compare the scratch behavior of the ion-exchanged glasses with the non ion-exchanged glass. Altogether, this work explores the micro and nanomechanical response of ion-exchanged glasses to normal and lateral loading. |