EFFECT OF TITANIA (TiO2) ADDITION ON THE TRANSITION TEMPERATURES OF CaO-MgO- Al2O3-SiO2 BASE GLASS SYSTEM

Publication Date : 19/05/2020

Author(s) :

Rayyan, Z. S. Aliyu, A. D. Garkida.

Volume/Issue :

Volume 15

Issue 2

(05 - 2020)

Abstract :

CaO-MgO-Al2O3-SiO2 base glass system was developed using locally available raw materials. The local raw materials were feldspar, limestone and magnesite. Titania was incorporated into the batches in varying proportion (2,4, 6, 8, and 10 wt%) and then melted into crucibles in an electric muffle furnace. The transition temperatures of the test-melted batches were determined using Mettler Toledo DSC which was operated at a heating rate of 10 oC/ min alongside Al2O3 as reference material. The findings revealed that titania (TiO2) has a significant effect on the transition temperature of each sample in the CaO-MgO-Al2O3-SiO2 base glass system. The sample to which 0 wt% TiO2 was added has the maximum transition temperature (273oC) and transition temperature keeps decreasing on gradual titania addition ( 0wt%, 2wt%, 4wt%, 6wt%, 8wt% & 10wt%) and the sample to which 10 wt% TiO2 was incorporated has the lowest transition temperature (221oC), and this shows tremendous effect of titania on the transition temperature of the sample.

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