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Lookup NU author(s): Dr Priscila MeloORCiD, Dr Piergiorgio GentileORCiD, Professor Kenneth Dalgarno
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In this work we investigated the sintering behaviour of apatite-wollastonite (AW) glass-ceramic powders with the presence of alumina, firstly detected as a potentially useful surface contaminant derived from the ball milling of the powder, and then as a dopant in the glass formulation. All powders were benchmarked against AW without alumina. A small percentage of contamination (0.14 wt%) showed to delay the melting of material, and lower densification derived from a lower ability to crystallize and higher stability in the glassy states. The doped AW revealed that an increase in alumina favoured the formation of a glassy phase, increasing the degree of necking and the development of crystals. In conclusion, the introduction of alumina improves the AW glass-ceramic processability when content and process parameters are optimized.
Author(s): Melo P, Kotlarz M, Marshall M, Magallanes M, Ferreira AM, Gentile P, Dalgarno K
Publication type: Article
Publication status: Published
Journal: Journal of the European Ceramic Society
Year: 2020
Volume: 40
Issue: 15
Pages: 6107-6113
Print publication date: 01/12/2020
Online publication date: 29/06/2020
Acceptance date: 27/06/2020
Date deposited: 09/07/2020
ISSN (print): 0955-2219
ISSN (electronic): 1873-619X
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.jeurceramsoc.2020.06.071
DOI: 10.1016/j.jeurceramsoc.2020.06.071
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