Detail publikačního výsledku

Transparent magnesium aluminate spinel: Effect of critical temperature in two-stage spark plasma sintering

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

Anglický název

Transparent magnesium aluminate spinel: Effect of critical temperature in two-stage spark plasma sintering

Druh

Článek WoS

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.

Anglický 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

Klíčová slova v angličtině

Magnesium aluminate spinel; Spark plasma sintering; Carbon contamination; Optical properties

Autoři

TALIMIAN, A.; POUCHLÝ, V.; EL-MAGHRABY, H.; MACA, K.; GALUSEK, D.

Rok RIV

2021

Vydáno

01.06.2020

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Svazek

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"
}

Dokumenty

1-s2.0-S0955221920300923-main