Effect of copper oxide to the structural and elastic properties of alumina magnesium lithium sulphophosphate glass system (Al2O3-MgO-Li2SO4-P2O5)

Zaiful Afendy, Nur Hidayah (2022) Effect of copper oxide to the structural and elastic properties of alumina magnesium lithium sulphophosphate glass system (Al2O3-MgO-Li2SO4-P2O5). [Project Paper] (Submitted)

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Abstract

The production of copper alumina magnesium lithium sulphophosphate glasses at different compositions added according to the empirical formula x(CuO)-5(Al2O3)- 15(MgO)-20(Li2SO4)-60-x(P2O5) with x= 0, 0.2, 0.4, 0.6, 0.8 and 1.0 mol % was prepared by using the melt-quenching technique and investigated by X-ray diffraction (XRD), ultrasonic velocities, density, molar volume and the properties of the structural and elastic model. The experimental elastic moduli that used to investigate the elastic properties of glass was including longitudinal modulus, Young’s modulus, bulk modulus, microhardness and Poisson’s ratio. In this study, the Makishima and Mackenzie model was also discussed and explained more to investigate the theoretical elastic moduli of the glasses. XRD confirmed an amorphous CuO-Al2O3-MgO- Li2SO4-P2O5 glass structure, a broad halo peak at angle ≈ 20 ° - 28 ° and continuous sharp peak absent observed in glass system. The experimental results show that the density of the glass sample increase from 2.500 to 2.522 g cm-3 and molar volume of the glass sample was decrease from 47.320 to 46.700 cm3/mol. In addition, the result shown in experimental elastic moduli measurements, the values for the longitudinal (L) increase from 5011 to 5458 cm-1, shear (G) increased from 3356 to 3664 cm-1, bulk (K) increased from 25.18 to 29.93 GPa, Young’s modulus (E) increased from 61.58 to 73.77 GPa, Poisson’s ratio decreased 0.092 to 0.088 and microhardness increased from 7.669 to 9.312 GPa. As for Makishima-Mackenzie theory, the longitudinal modulus increased from 9.657 to 9.750 GPa, shear modulus increased from 6.673 to 6.741 GPa, bulk modulus increased from 7.600 to 7.623 GPa, Young’s modulus increased from 4.831 to 4.854 GPa and lastly microhardness increased from 2.084 to 4.110 GPa and Poisson’s ratio decreased from 0.086 to 0.061. The results of XRD, ultrasonic velocities and elastic moduli evidenced the formation of CuO-Al2O3-MgO- Li2SO4-P2O5 glass system and potentially used in the fields of sealing and laser glasses also in biomedical glasses.

Item Type:	Project Paper
Faculty:	Fakulti Sains
Depositing User:	Ms Emelda Mohd Hamid
Date Deposited:	20 May 2024 02:21
Last Modified:	08 Aug 2024 07:56
URI:	http://psaspb.upm.edu.my/id/eprint/1746

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