Cold sintering of soda-lime glass

Ordinary recycled soda lime glass powder was densified via cold sintering process with the aid of concentrated NaOH solution. Increase in processing time, temperature and concentration of the NaOH solution resulted in the formation of monolithic glass artifacts with higher relative densities. The sample densified the most (95.2%) was obtained when the sintering was performed at 250 degrees C with a 20 min dwell time using 15 M NaOH solution. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Automated summary

The ordinary recycled soda lime glass powder was densified through cold sintering process with the aid of concentrated NaOH solution. Increasing processing time, temperature, and concentration of NaOH solution led to the formation of monolithic glass artifacts with higher relative densities. The highest densification (95.2%) was achieved when sintering was done at 250 degrees C for 20 minutes using 15 M NaOH solution.