The Effect of Different Amounts of ZnO on Structural Properties of Aluminosilicate Glasses

Document Type : Original Articles

Authors

Zahra Kahrobaee ¹

Sajad Azghandirad ²

Javad NaeemAbadi ³

Masoud Tavakolian Akbari ³

Sahar Mollazadeh ³

Mohammad Mazinani ¹

¹ Department of Materials Engineering, Faculty of Engineering, Ferdowsi University Of Mashhad.

² Student, Department of Materials Engineering, Faculty of Engineering, Ferdowsi University of Mashhad

³ Department of Materials Engineering, Faculty of Engineering, Ferdowsi University of Mashhad.

10.22067/jmme.2020.39262

Abstract

The effect of different amounts of ZnO on structural properties of SiO₂-Al₂O₃-p < sub>2O₅-CaF₂-CaO-K₂O-Na₂O-xZnOglasses was studied. The effect of ZnO addition on glass transition and crystallization temperatures were studied by DTA. FTIR and RAMAN were used to study the characteristic bands of prepared glasses. All samples were heat treated at two different temperatures of 750 and 1100°C. XRD analysis showed that anorthite and calciumphosphate were the main crystalline phases. Based on DTA and XRD results, samples with higher amounts of ZnO were crystallized at higher temperatures. No significant band changes were detected as a result of ZnOaddition as spectroscopic results showed. Vickers microhardness numbers showed that ZnO addition up to 2gr lead to a significant (p < 0.05) improvement in microhardness values.

Keywords

Glass-ceramic

Zinc Oxid

Heat-treatment

Micro-hardness

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