International Journal of Scientific & Engineering Research Volume 10, Issue 6, June-2019 1459 ISSN 2229-5518 Effect of Tempering Temperatures on the Mechanical Performance of Soda-Lime- Silica Glass B. Oji 1 * and O. Aletan1 1 Department of Glass and Ceramics Technology, Federal Polytechnic P.M.B 5351, Ado-Ekiti, Nigeria. * Corresponding Author: Tel: +2347039582911; E-mail:
[email protected] ABSTRACT This work seeks to investigate the effect of tempering temperature on the mechanical performance of soda-lime glass. The glass samples were cut into 130 x 30 x 4 mm and heated at varying temperature ranges of 570, 590, 610, 630 and 650oC respectively in a muffle furnace. The samples were then tempered by rapid ooling in a bath of oil and allowed to cool to room temperature. Micro graphical examination, hardness and flexural tests were carried out on the tempered glass samplesIJSER and result obtained shows that the internal structure of the tempered glass were better enhanced at temperature of 570oC, while the hardness value was also found to be better at this temperature. The hardness value records it lowest when the sample was heated to a temperature of 650oC while the result obtained from the flexural strength test shows that the bending strength of the tempered glass samples were reduced compared to the control sample. Keywords: Mechanical; Micro graphical; internal structure; flexural strength. Tempered, hardness, structure. 1. INTRODUCTION IJSER © 2019 http://www.ijser.org International Journal of Scientific & Engineering Research Volume 10, Issue 6, June-2019 1460 ISSN 2229-5518 Over the year’s soda-lime-silica glass have continued to find application in architectural designs, automobiles, as continuer vessels and as casement for commodity items due to their relatively lower forming temperature, lower cost, structural modification, chemical stability, hardness and easy manipulation.