Improving optical transmission of spark-plasma-sintered yag ceramics: Effect of powder conditioning and post-treatments

L. Boilet, P. Aubry, Luc Henrard, Olivier Deparis, P. Palmero, V. Lardot, F. Cambier, Rosa Moronta Perez

Research output: Contribution to journalArticle

5 Downloads (Pure)

Abstract

Three YAG powders were densified by means of spark plasma sintering (SPS), with the aim of developing optically transparent ceramics. The influence of the physico-chemical characteristics of the powders (purity, agglomeration state and stoichiometry) on the sintering and the optical transmission was investigated. Depending on the powder type, different pre-treatments and/or post-treatments were necessary to increase both homogeneity and optical transmission of the densified parts. In the case of agglomerated powders, dispersion by ultrasonication was efficient and led to better homogeneity and higher optical transmission. Post-treatments such as annealing and post-hipping in air were helpful to reduce oxygen vacancies and residual porosities and improved the optical transmission of the ceramics. The highest values of real in-line transmission (RIT) were obtained under SPS conditions of 50 MPa at 1500 °C and after annealing in air at 1150 °C for 12 h. The achieved RIT value was equal to 66 % at the wavelength of 600 nm.

Original languageEnglish
Pages (from-to)19-28
Number of pages10
JournalJournal of Ceramic Science and Technology
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Mar 2018

Fingerprint

Light transmission
Electric sparks
Powders
Plasmas
Spark plasma sintering
Electric lines
Annealing
Oxygen vacancies
Air
Stoichiometry
Sintering
Agglomeration
Porosity
Wavelength

Keywords

  • Optical properties
  • SPS
  • Transparent ceramics
  • YAG

Cite this

@article{3c7bf922b047473c9f32fdcb69bb9278,
title = "Improving optical transmission of spark-plasma-sintered yag ceramics: Effect of powder conditioning and post-treatments",
abstract = "Three YAG powders were densified by means of spark plasma sintering (SPS), with the aim of developing optically transparent ceramics. The influence of the physico-chemical characteristics of the powders (purity, agglomeration state and stoichiometry) on the sintering and the optical transmission was investigated. Depending on the powder type, different pre-treatments and/or post-treatments were necessary to increase both homogeneity and optical transmission of the densified parts. In the case of agglomerated powders, dispersion by ultrasonication was efficient and led to better homogeneity and higher optical transmission. Post-treatments such as annealing and post-hipping in air were helpful to reduce oxygen vacancies and residual porosities and improved the optical transmission of the ceramics. The highest values of real in-line transmission (RIT) were obtained under SPS conditions of 50 MPa at 1500 °C and after annealing in air at 1150 °C for 12 h. The achieved RIT value was equal to 66 {\%} at the wavelength of 600 nm.",
keywords = "Optical properties, SPS, Transparent ceramics, YAG",
author = "L. Boilet and P. Aubry and Luc Henrard and Olivier Deparis and P. Palmero and V. Lardot and F. Cambier and {Moronta Perez}, Rosa",
year = "2018",
month = "3",
day = "1",
doi = "10.4416/JCST2017-00052",
language = "English",
volume = "9",
pages = "19--28",
journal = "Journal Ceramic Science and Technology",
issn = "2190-9385",
publisher = "Goeller Verlag GmbH",
number = "1",

}

Improving optical transmission of spark-plasma-sintered yag ceramics : Effect of powder conditioning and post-treatments. / Boilet, L.; Aubry, P.; Henrard, Luc; Deparis, Olivier; Palmero, P.; Lardot, V.; Cambier, F.; Moronta Perez, Rosa.

In: Journal of Ceramic Science and Technology, Vol. 9, No. 1, 01.03.2018, p. 19-28.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Improving optical transmission of spark-plasma-sintered yag ceramics

T2 - Effect of powder conditioning and post-treatments

AU - Boilet, L.

AU - Aubry, P.

AU - Henrard, Luc

AU - Deparis, Olivier

AU - Palmero, P.

AU - Lardot, V.

AU - Cambier, F.

AU - Moronta Perez, Rosa

PY - 2018/3/1

Y1 - 2018/3/1

N2 - Three YAG powders were densified by means of spark plasma sintering (SPS), with the aim of developing optically transparent ceramics. The influence of the physico-chemical characteristics of the powders (purity, agglomeration state and stoichiometry) on the sintering and the optical transmission was investigated. Depending on the powder type, different pre-treatments and/or post-treatments were necessary to increase both homogeneity and optical transmission of the densified parts. In the case of agglomerated powders, dispersion by ultrasonication was efficient and led to better homogeneity and higher optical transmission. Post-treatments such as annealing and post-hipping in air were helpful to reduce oxygen vacancies and residual porosities and improved the optical transmission of the ceramics. The highest values of real in-line transmission (RIT) were obtained under SPS conditions of 50 MPa at 1500 °C and after annealing in air at 1150 °C for 12 h. The achieved RIT value was equal to 66 % at the wavelength of 600 nm.

AB - Three YAG powders were densified by means of spark plasma sintering (SPS), with the aim of developing optically transparent ceramics. The influence of the physico-chemical characteristics of the powders (purity, agglomeration state and stoichiometry) on the sintering and the optical transmission was investigated. Depending on the powder type, different pre-treatments and/or post-treatments were necessary to increase both homogeneity and optical transmission of the densified parts. In the case of agglomerated powders, dispersion by ultrasonication was efficient and led to better homogeneity and higher optical transmission. Post-treatments such as annealing and post-hipping in air were helpful to reduce oxygen vacancies and residual porosities and improved the optical transmission of the ceramics. The highest values of real in-line transmission (RIT) were obtained under SPS conditions of 50 MPa at 1500 °C and after annealing in air at 1150 °C for 12 h. The achieved RIT value was equal to 66 % at the wavelength of 600 nm.

KW - Optical properties

KW - SPS

KW - Transparent ceramics

KW - YAG

UR - http://www.scopus.com/inward/record.url?scp=85045683029&partnerID=8YFLogxK

U2 - 10.4416/JCST2017-00052

DO - 10.4416/JCST2017-00052

M3 - Article

VL - 9

SP - 19

EP - 28

JO - Journal Ceramic Science and Technology

JF - Journal Ceramic Science and Technology

SN - 2190-9385

IS - 1

ER -