Effect of sintering temperature on microstructural and optical properties of transparent yttria ceramics fabricated by spark plasma sintering

Reza Shoja Razavi; Mehdi Ahsanzadeh-Vadeqani; Masoud Barekat; Mehdi Naderi; Sayed Hamid Hashemi; Ajay Kumar Mishra

doi:10.1016/j.ceramint.2016.02.013

Effect of sintering temperature on microstructural and optical properties of transparent yttria ceramics fabricated by spark plasma sintering

Reza Shoja Razavi, Mehdi Ahsanzadeh-Vadeqani, Masoud Barekat, Mehdi Naderi, Sayed Hamid Hashemi, Ajay Kumar Mishra

Research output: Journal Publication › Article › peer-review

43 Citations (Scopus)

Abstract

Yttria nanopowder was used to fabricate transparent yttria ceramics by spark plasma sintering at temperatures ranging from 1200 °C to 1600 °C for 20 min. The microstructure of fracture cross section and optical transmittance of the products were characterized by Field Emission-Scanning Electron Microscope (FE-SEM) and Fourier-transform infrared spectrophotometer (FTIR). With increasing the sintering temperature, densification occurs up to 1500 °C, whereas the mean grain size of yttria ceramics was first increased and then decreased markedly. The highest density and the lowest mean grain size of yttria ceramic reached to 99.58% and 0.53 μm at 1500 °C, respectively. The best in-line transmittance was at 1500 °C, with transmittance being about 80% in the range of 3-5 μm, which was close to the theoretical value of yttria.

Original language	English
Pages (from-to)	7819-7823
Number of pages	5
Journal	Ceramics International
Volume	42
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2016.02.013
Publication status	Published - 1 May 2016
Externally published	Yes

Keywords

A. Grain growth
SPS
Transparent ceramic
Yttria

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2016.02.013

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@article{0e85ff3ec31e46b5878fffce26200163,

title = "Effect of sintering temperature on microstructural and optical properties of transparent yttria ceramics fabricated by spark plasma sintering",

abstract = "Yttria nanopowder was used to fabricate transparent yttria ceramics by spark plasma sintering at temperatures ranging from 1200 °C to 1600 °C for 20 min. The microstructure of fracture cross section and optical transmittance of the products were characterized by Field Emission-Scanning Electron Microscope (FE-SEM) and Fourier-transform infrared spectrophotometer (FTIR). With increasing the sintering temperature, densification occurs up to 1500 °C, whereas the mean grain size of yttria ceramics was first increased and then decreased markedly. The highest density and the lowest mean grain size of yttria ceramic reached to 99.58\% and 0.53 μm at 1500 °C, respectively. The best in-line transmittance was at 1500 °C, with transmittance being about 80\% in the range of 3-5 μm, which was close to the theoretical value of yttria.",

keywords = "A. Grain growth, SPS, Transparent ceramic, Yttria",

author = "Razavi, \{Reza Shoja\} and Mehdi Ahsanzadeh-Vadeqani and Masoud Barekat and Mehdi Naderi and Hashemi, \{Sayed Hamid\} and Mishra, \{Ajay Kumar\}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

month = may,

day = "1",

doi = "10.1016/j.ceramint.2016.02.013",

language = "English",

volume = "42",

pages = "7819--7823",

journal = "Ceramics International",

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TY - JOUR

T1 - Effect of sintering temperature on microstructural and optical properties of transparent yttria ceramics fabricated by spark plasma sintering

AU - Razavi, Reza Shoja

AU - Ahsanzadeh-Vadeqani, Mehdi

AU - Barekat, Masoud

AU - Naderi, Mehdi

AU - Hashemi, Sayed Hamid

AU - Mishra, Ajay Kumar

PY - 2016/5/1

Y1 - 2016/5/1

N2 - Yttria nanopowder was used to fabricate transparent yttria ceramics by spark plasma sintering at temperatures ranging from 1200 °C to 1600 °C for 20 min. The microstructure of fracture cross section and optical transmittance of the products were characterized by Field Emission-Scanning Electron Microscope (FE-SEM) and Fourier-transform infrared spectrophotometer (FTIR). With increasing the sintering temperature, densification occurs up to 1500 °C, whereas the mean grain size of yttria ceramics was first increased and then decreased markedly. The highest density and the lowest mean grain size of yttria ceramic reached to 99.58% and 0.53 μm at 1500 °C, respectively. The best in-line transmittance was at 1500 °C, with transmittance being about 80% in the range of 3-5 μm, which was close to the theoretical value of yttria.

AB - Yttria nanopowder was used to fabricate transparent yttria ceramics by spark plasma sintering at temperatures ranging from 1200 °C to 1600 °C for 20 min. The microstructure of fracture cross section and optical transmittance of the products were characterized by Field Emission-Scanning Electron Microscope (FE-SEM) and Fourier-transform infrared spectrophotometer (FTIR). With increasing the sintering temperature, densification occurs up to 1500 °C, whereas the mean grain size of yttria ceramics was first increased and then decreased markedly. The highest density and the lowest mean grain size of yttria ceramic reached to 99.58% and 0.53 μm at 1500 °C, respectively. The best in-line transmittance was at 1500 °C, with transmittance being about 80% in the range of 3-5 μm, which was close to the theoretical value of yttria.

KW - A. Grain growth

KW - SPS

KW - Transparent ceramic

KW - Yttria

UR - https://www.scopus.com/pages/publications/84960099789

U2 - 10.1016/j.ceramint.2016.02.013

DO - 10.1016/j.ceramint.2016.02.013

M3 - Article

AN - SCOPUS:84960099789

SN - 0272-8842

VL - 42

SP - 7819

EP - 7823

JO - Ceramics International

JF - Ceramics International

IS - 6

ER -

Effect of sintering temperature on microstructural and optical properties of transparent yttria ceramics fabricated by spark plasma sintering

Abstract

Keywords

ASJC Scopus subject areas

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