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Phase Transformation of 10Li₂O-9MnO₂-16Fe₂O₃-15CaO-5P₂O₅-5Al₂O₃-40SiO₂ Glass

H.-Z. Cheng, H.-J. Lin, C.-S. Hsi, C.-F. Wang, M.-C. Wang, H. Jiang, C.-J. Li, P. Lu

Journal of Ceramic Science and Technology, Vol. 4, No. 3 (2013), pp. 151-156

DOI: 10.4416/JCST2013-00005

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Abstract

The phase transformation and magnetic properties of 10Li2O-9MnO2-16Fe2O3-15CaO-5P2O5-5Al2O3-40SiO2 (LMFCPAS) glass have been observed and investigated using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectrometry (EDS), and transmission electron microscopy (TEM) with selected area electron diffraction (SAED). After crystallization of the LMFCPAS glass at 800 °C for 2 h, the crystalline phases of Li2Al2Si3O10, Li2SiO3, β-wollastonite (β-CaSiO3), lithium orthophosphate (Li3PO4), magnetite (FeFe2O4) and triphytite (Li(Mn0.5Fe0.5)PO4) were obtained. When the LMFCPAS glass crystallized at 850 °C, the β-wollastonite exhibited lath form morphology. As the LMFCPAS glass crystallized at 850 °C for 16 h and under an applied magnetic field of 1000 Oe, very small remnant magnetic induction and coercive force of 0.01 emu/g and 50 Oe were obtained, respectively.

Keywords

LMFCPAS glass, crystallization behavior, lath form

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