Transparent ZnAl 2 O 4 ceramics fabricated by spark plasma sintering

Byung Nam Kim, Keijiro Hiraga, Ahrong Jeong, Chungfeng Hu, Tohru Suzuki, Jon Do Yun, Yoshio Sakka

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Highly transparent zinc aluminate ceramics were fabricated by the solid-state reaction using a spark plasma sintering machine. The sintered body exhibited a microstructure consisting of submicron-sized grains and extremely low porosities. Annealing of the sintered body in air improved the transmission close to the theoretical limit in a wavelength range of 1-5μm. The band gap energy estimated from the absorption coefficient was 4.3 eV. The Young's modulus and the bulk modulus measured for the fully dense zinc aluminates were 282 and 211 GPa, respectively.

Original languageEnglish
Pages (from-to)784-787
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume122
Issue number1429
DOIs
Publication statusPublished - 2014 Sep 1
Externally publishedYes

Fingerprint

Spark plasma sintering
sparks
Zinc
sintering
zinc
Elastic moduli
ceramics
aluminates
Solid state reactions
bulk modulus
modulus of elasticity
absorptivity
Energy gap
Porosity
Annealing
solid state
porosity
Wavelength
microstructure
Microstructure

Keywords

  • Annealing
  • Band gap energy
  • Elastic property
  • Spark plasma sintering
  • Transmission
  • Zinc aluminate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Transparent ZnAl 2 O 4 ceramics fabricated by spark plasma sintering . / Kim, Byung Nam; Hiraga, Keijiro; Jeong, Ahrong; Hu, Chungfeng; Suzuki, Tohru; Yun, Jon Do; Sakka, Yoshio.

In: Journal of the Ceramic Society of Japan, Vol. 122, No. 1429, 01.09.2014, p. 784-787.

Research output: Contribution to journalArticle

Kim, Byung Nam ; Hiraga, Keijiro ; Jeong, Ahrong ; Hu, Chungfeng ; Suzuki, Tohru ; Yun, Jon Do ; Sakka, Yoshio. / Transparent ZnAl 2 O 4 ceramics fabricated by spark plasma sintering In: Journal of the Ceramic Society of Japan. 2014 ; Vol. 122, No. 1429. pp. 784-787.
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