Study of the chemical resistance of glass with the composition XNa2Si2O5-YPbSiO3 in acidic and alkaline aqueous solutions

Abstract

Due to the importance of sodium oxide-based silica glass and lead oxide-based silica glass in industrial and technological fields, in addition to their low cost and ease of manufacture, this research was conducted to prepare 9 glass samples with the composition XNa₂Si₂O₅-YPbSiO₃ where (X=1,2,3,4,5,6,7,8,9 mol% Y=10-X mol%), the melting and cooling method was used to prepare both sodium disilicate glass and lead silicate glass, and the chemical resistance of the glass samples produced by soaking using some inorganic acids such as HNO₃, H₂SO₄, HCl and sodium hydroxide NaOH for 24 hours was studied. The results showed that all the samples corroded in the acidic solutions, except for the (Na₂O=27.27%,SiO₂=63.63%,PbO=9.0009%) composition where (X=3mol%,Y=1mol%) , which showed no corrosion in the acidic solutions. All samples also showed high resistance to the alkaline solution, as there was no loss in their weights