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Materials 2014, 7(8), 5565-5580; doi:10.3390/ma7085565

Magnetic Glass Ceramics by Sintering of Borosilicate Glass and Inorganic Waste

1
Department of Industrial Engineering, University of Padova, via Marzolo 9, 35131 Padova (PD), Italy
2
Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44 bus 2450, B-3001 Heverlee (Leuven), Belgium
3
Colorobbia Research Centre (Ce.Ri.Col.), via Pietramarina 53, 50053 Sovigliana Vinci (FI), Italy
4
Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
*
Author to whom correspondence should be addressed.
Received: 23 May 2014 / Revised: 16 July 2014 / Accepted: 21 July 2014 / Published: 31 July 2014
(This article belongs to the Special Issue Recycled Materials)
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Abstract

Ceramics and glass ceramics based on industrial waste have been widely recognized as competitive products for building applications; however, there is a great potential for such materials with novel functionalities. In this paper, we discuss the development of magnetic sintered glass ceramics based on two iron-rich slags, coming from non-ferrous metallurgy and recycled borosilicate glass. The substantial viscous flow of the glass led to dense products for rapid treatments at relatively low temperatures (900–1000 °C), whereas glass/slag interactions resulted in the formation of magnetite crystals, providing ferrimagnetism. Such behavior could be exploited for applying the obtained glass ceramics as induction heating plates, according to preliminary tests (showing the rapid heating of selected samples, even above 200 °C). The chemical durability and safety of the obtained glass ceramics were assessed by both leaching tests and cytotoxicity tests. View Full-Text
Keywords: viscous flow sintering; magnetic glass ceramics; induction heating; iron-rich slags; borosilicate glass; cytotoxicity tests viscous flow sintering; magnetic glass ceramics; induction heating; iron-rich slags; borosilicate glass; cytotoxicity tests
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Ponsot, I.M.M.M.; Pontikes, Y.; Baldi, G.; Chinnam, R.K.; Detsch, R.; Boccaccini, A.R.; Bernardo, E. Magnetic Glass Ceramics by Sintering of Borosilicate Glass and Inorganic Waste. Materials 2014, 7, 5565-5580.

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