Reaction Sintering of Transparent Aluminum Oxynitride (AlON) Ceramics Using MgO and Y2O3 as Co-Additives

Shen Qi; Xiao Jian Mao; Bao Yan Chai; Long Zhang

doi:10.4028/www.scientific.net/KEM.697.7

Paper Titles

Synthesis and Characterization of MoO₂ Nanoplates Prepared by Thermal Evaporation of MoO₃ and S Powders
p.3

Reaction Sintering of Transparent Aluminum Oxynitride (AlON) Ceramics Using MgO and Y₂O₃ as Co-Additives
p.7

Effects of Seeding with Nanocrystallites and Addition of Inorganic Alumina Sol on Crystallization of Alkoxide Alumina Gel
p.12

Preparation and Characteristics of Nanocrystalline Yttria by Microwave-Induced Solution Combustion Method
p.18

Preparation of High-Purity Magnesium Aluminate Spinel Powder by Thermal Decomposition Method
p.23

Preparation of Amorphous SiOC Ceramic Powders through Precursor Polymer Pyrolysis
p.27

Preparation of Zirconium Diboride Nanopowders Using Different Zirconium Sources via Sol-Gel Method
p.33

Preparation of ZrB₂ Powders with Different Morphologies by Pressureless Reactions
p.39

Preparation of Zirconium Diboride Powder by Carbon Thermal Reduction Method
p.44

HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Reaction Sintering of Transparent Aluminum...

Reaction Sintering of Transparent Aluminum Oxynitride (AlON) Ceramics Using MgO and Y₂O₃ as Co-Additives

Abstract:

Transparent aluminum oxynitride (AlON) ceramics have been prepared through a method based on direct reaction sintering of alumina and aluminum nitride powders using MgO and Y₂O₃ as co-additives. The sintering additives could cause the formation of liquid phase during sintering, which would greatly promote the densification and eliminate pores. The grain size of AlON is about 50-100μm. The influence of different component of Al₂O₃ and AlN as well as sintering temperature on microstructure and optical properties of AlON have been studied. High transparent AlON ceramics with the in-line transmittance of 80.3% at 2000 nm wavelength have been prepared when the concentration of sintering additives was 0.16wt% Y₂O₃ and 0.02wt% MgO.

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

7-11

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.7

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Online since:

July 2016

Authors:

Shen Qi, Xiao Jian Mao, Bao Yan Chai, Long Zhang*

Keywords:

AlON Transparent Ceramics, Co-Additives, Reactive Sintering, Transparent Ceramics

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