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TALIMIAN, A. POUCHLÝ, V. EL-MAGHRABY, H. MACA, K. GALUSEK, D.
Originální název
Transparent magnesium aluminate spinel: Effect of critical temperature in two-stage spark plasma sintering
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The discolouration of magnesium aluminate spinet caused by carbon contamination is a main drawback of fabricating transparent bodies by spark plasma sintering (SPS). In this study, a two-stage heating rate profile was used to produce transparent MgAl2O4 without using sintering aids by SPS at 1250 degrees C. The effect of critical temperature (Tc), at which the heating rate is decreased, on transparency and carbon contamination was investigated: higher critical temperature resulted in higher contamination. Non-uniform densification indicated that fast heating results in a hot-zone formation in the centre of sintered pellets; the higher temperature of centre favoured reaction of graphite die with spinel and formation of disordered carbon structures in residual pores.
Klíčová slova
Magnesium aluminate spinel; Spark plasma sintering; Carbon contamination; Optical properties
Autoři
TALIMIAN, A.; POUCHLÝ, V.; EL-MAGHRABY, H.; MACA, K.; GALUSEK, D.
Vydáno
1. 6. 2020
Nakladatel
ELSEVIER SCI LTD
Místo
OXFORD
ISSN
0955-2219
Periodikum
Journal of the European Ceramic Society
Ročník
40
Číslo
6
Stát
Spojené království Velké Británie a Severního Irska
Strany od
2417
Strany do
2425
Strany počet
9
URL
https://www.sciencedirect.com/science/article/pii/S0955221920300923?via%3Dihub
Plný text v Digitální knihovně
http://hdl.handle.net/11012/187003
BibTex
@article{BUT163795, author="Ali {Talimian} and Václav {Pouchlý} and H.F. {El-Maghraby} and Karel {Maca} and Dušan {Galusek}", title="Transparent magnesium aluminate spinel: Effect of critical temperature in two-stage spark plasma sintering", journal="Journal of the European Ceramic Society", year="2020", volume="40", number="6", pages="2417--2425", doi="10.1016/j.jeurceramsoc.2020.02.012", issn="0955-2219", url="https://www.sciencedirect.com/science/article/pii/S0955221920300923?via%3Dihub" }