Fabrication of translucent AlN ceramics with MgF 2 additive by spark plasma sintering

Hyoung Won Son, Byung Nam Kim, Tohru Suzuki, Yoshikazu Suzuki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Translucent AlN ceramics with 0-2 wt.% MgF 2 additive were prepared by spark plasma sintering. AlN powder was heated temporarily up to 2000°C, before holding at 1850°C for 20 minutes in N 2 gas. The sintered ceramics consisted of a single phase of hexagonal AlN, and showed a transgranular fracture mode. The total transmittance was improved remarkably by the additive, to reach 74% at a wavelength of 800 nm for 1 wt.% MgF 2 . For 2 wt.% MgF 2 , the transmittance was slightly lower than that for 1 wt.% MgF 2 , and an absorption band was observed apparently at around 400 nm. The addition of MgF 2 along with the temporary heating at higher temperatures than the sintering temperature contributed to improve the transmittance remarkably.

Original languageEnglish
Pages (from-to)4430-4433
Number of pages4
JournalJournal of the American Ceramic Society
Volume101
Issue number10
DOIs
Publication statusPublished - 2018 Oct 1
Externally publishedYes

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Spark plasma sintering
Fabrication
Powders
Absorption spectra
Sintering
Gases
Heating
Wavelength
Temperature

Keywords

  • aluminum nitride
  • spark plasma sintering
  • transparent ceramics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Fabrication of translucent AlN ceramics with MgF 2 additive by spark plasma sintering . / Son, Hyoung Won; Kim, Byung Nam; Suzuki, Tohru; Suzuki, Yoshikazu.

In: Journal of the American Ceramic Society, Vol. 101, No. 10, 01.10.2018, p. 4430-4433.

Research output: Contribution to journalArticle

Son, Hyoung Won ; Kim, Byung Nam ; Suzuki, Tohru ; Suzuki, Yoshikazu. / Fabrication of translucent AlN ceramics with MgF 2 additive by spark plasma sintering In: Journal of the American Ceramic Society. 2018 ; Vol. 101, No. 10. pp. 4430-4433.
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