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Influence of different CaF2 contents and heat treatment temperature on apatite-mullite glass ceramics derived from waste materials


Citation

Wan Jusoh, Wan Nurshamimi and Matori, Khamirul Amin and Mohd Zaid, Mohd Hafiz and Zainuddin, Norhazlin and Ahmad Khiri, Mohammad Zulhasif and Abdul Rahman, Nadia Asyikin and Abdul Jalil, Rohaniah and Kuld, Esra (2020) Influence of different CaF2 contents and heat treatment temperature on apatite-mullite glass ceramics derived from waste materials. Ceramics - Silikaty, 64 (4). 447 - 459. ISSN 0862-5468; ESSN: 1804-5847

Abstract

An apatite-mullite glass ceramics composition derived from clam shell (CS) and soda lime silicate (SLS) glass has been fabricated from a heat treatment process of composition [xCaF2·(45−x)SLS·15CS·20Al2O3·20P2O5], where x is 5, 10, 15 and 20 (wt. %). The result concluded that the Ca and Si elements were found in the CS and SLS glass respectively as a major weight composition, thereby promoting the use of waste materials in the manufacture of glass ceramic samples. Besides, the CaF2 addition lowers the glass transition temperature (Tg) and crystallisation temperature (Tc) of the glass composition. The density and percentage of the linear shrinkage of the samples differs with the addition of CaF2 and various heat treatment temperatures. For the structural properties’ analysis, the formation of fluorapatite with a needle-like microstructure and mullite phase was enhanced with a higher CaF2 content, while the growth of the anorthite phase was observed to occur at a higher heat treatment temperature. Generally, the addition of ahigh CaF2 content with the help of heat treatment in apatitemullite glass ceramics composition greatly promotes the crystallisation of the fluorapatite phase, which is crucial for denture glass ceramics.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.13168/cs.2020.0032
Publisher: Institute of Chemical Technology
Keywords: Apatite-mullite glass ceramics; CaF2; Clam shell; Heat treatment; Soda lime silicate glass
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 03 Sep 2021 05:21
Last Modified: 03 Sep 2021 05:21
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.13168/cs.2020.0032
URI: http://psasir.upm.edu.my/id/eprint/89360
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