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Magnetic properties of magnetite-based nano-glass-ceramics obtained from a Fe-rich scale and borosilicate glass wastes by Tales Gonçalves Avancini; Marcelo Tramontin Souza; Antonio Pedro Novaes de Oliveira; Sabrina Arcaro; Annelise Kopp Alves is a Materials Science article available to read on EtoBox.
What is Magnetic properties of magnetite-based nano-glass-ceramics obtained from a Fe-rich scale and borosilicate glass wastes about?
Magnetite-based glass-ceramic is a special composite material composed by magnetic nanocrystals embedded in a vitreous matrix. In this work, it was developed magnetic glass-ceramics based on borosilicate glass wastes and, for the first time, by using iron-rich scale (a waste from the metallurgical industry). Different compositions were established with increasing scale contents (20, 30, 45 wt.%). Raw materials were melted (1550 °C/4h) and later cast in a preheated steel mold at 400 °C. Then, the obtained samples were heat-treated at 700 oC/ 30 min. The sample with 45 wt.% scale also was heated at 800 oC and 900 oC/ 30 min, in order to promote more crystallization. The obtained glass-ceramics properties were investigated using X-ray diffraction (XRD), Raman spectroscopy, vibrating-sample magnetometer (VSM), Mössbauer spectroscopy and transmission electron microscopy (TEM). Magnetite nanocrystals (average size in the 40 to 64 nm range) in the glass-ceramics were evidenced by TEM images and Mössbauer spectrum. VSM analysis revealed that the obtained ferrimagnetic glass-ceramic with composition of 45 wt.% scale annealed at 800 oC/ 30 min, improved the magnetic saturation (Ms), reaching
Who reads Magnetic properties of magnetite-based nano-glass-ceramics obtained from a Fe-rich scale and borosilicate glass wastes?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Tales Gonçalves Avancini; Marcelo Tramontin Souza; Antonio Pedro Novaes de Oliveira; Sabrina Arcaro; Annelise Kopp Alves
- Published
- 2019
- Language
- EN
- Field
- Materials Science (Physical Sciences)