Influence of Microstructural Effect on Microvickers Hardness Properties of SiO2-Na2O-CaO (SNC) Waste Based Glass-ceramic

Nur Fadilah, Baharuddin Pallan and N F, Adnin and K A, Matori and Mansor, Hashim and F M, Idris and Idza Riati, Ibrahim and S N A, Rusly and M Z A, Khiri and Rodziah, Nazlan and N Hapishah, Abdullah and M S E, Shafie and R S, Aziz and Z N, Alassan and N, Zainuddin and N Faizah, Baharuddin Pallan and Noraziah, Ahmad and Maria, Nuid (2018) Influence of Microstructural Effect on Microvickers Hardness Properties of SiO2-Na2O-CaO (SNC) Waste Based Glass-ceramic. Journal of Physics: Conference Series, 2018 (1). pp. 1-7.

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Abstract

There are a lot of waste materials consist of silicate based such as coal combustion ash, slag from steel production, fly ash, mud, as well as glass cullet or mixtures to produce glass-ceramics. This research work using clam shell (CS) ash and soda-lime-silica (SLS) waste glass powder for fabricating novel SiO2-Na2O-CaO (SNC) glass-ceramic. The samples were composed of SLS (50%), Na2CO3 (30%), and CS (20%) in weight percentage via conventional melt-quenching technique and solid-state sintering technique. The samples were investigated via X-Ray Diffractometer (XRD), Field emission microscope (FESEM), and microvickers hardness tester. The samples were sintered at 550-950 °C to investigate the influence of microstructural effect on microvickers hardness properties at applied force 0.5 and 1.0 kgf. The optimal Vickers hardness properties at sintering temperature 850 °C due to high crystallization of SiO2 phase from the residual glass and CaO content enhanced the viscosity flow, high compactness of particles arrangement and densification of sample.

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