Journal Home > Volume 11 , issue 4

Transparent Al2O3 ceramics with grains aligned to the c-axis were prepared by adding platelets with a low aspect ratio into fine equiaxed particles. The mixed powders were formed into green bodies using spontaneous coagulation casting and sintered by pressureless sintering and hot-isostatic pressure sintering. Zeta potentials and rheological behavior of the slurries, relative densities of green bodies, and orientation and optical properties of sintered bodies were investigated and discussed. The platelet with a high aspect ratio suppressed densification more seriously during sintering than the one with a low aspect ratio. An excellent oriented structure was obtained when 5 wt% platelets with a low aspect ratio were added, and transparent Al2O3 ceramics with grains aligned to c-axis were successfully prepared; the in-line transmittance was 78.4% at 600 nm, which is the highest one in the currently reported literature.


menu
Abstract
Full text
Outline
About this article

High transmittance and grain-orientated alumina ceramics fabricated by adding fine template particles

Show Author's information Han CHENa,cJin ZHAOb,cShunzo SHIMAIcXiaojian MAOb,cJian ZHANGb,cGuohong ZHOUb,cShiwei WANGb,c( )Na GUdKai ZHENGd
University of Chinese Academy of Sciences, Beijing 100049, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Shandong Guiyuan Advanced Ceramics Co., Ltd., Zibo 255000, China

Abstract

Transparent Al2O3 ceramics with grains aligned to the c-axis were prepared by adding platelets with a low aspect ratio into fine equiaxed particles. The mixed powders were formed into green bodies using spontaneous coagulation casting and sintered by pressureless sintering and hot-isostatic pressure sintering. Zeta potentials and rheological behavior of the slurries, relative densities of green bodies, and orientation and optical properties of sintered bodies were investigated and discussed. The platelet with a high aspect ratio suppressed densification more seriously during sintering than the one with a low aspect ratio. An excellent oriented structure was obtained when 5 wt% platelets with a low aspect ratio were added, and transparent Al2O3 ceramics with grains aligned to c-axis were successfully prepared; the in-line transmittance was 78.4% at 600 nm, which is the highest one in the currently reported literature.

Keywords:

templated grain growth (TGG), orientation, transparent alumina
Received: 09 July 2021 Revised: 25 November 2021 Accepted: 26 November 2021 Published: 17 March 2022 Issue date: April 2022
References(35)
[1]
Brandon D, Chen DZ, Chan H. Control of texture in monolithic alumina. Mater Sci Eng A 1995, 195: 189-196.
[2]
Carisey T, Leviri I, Brandon DG. Micro structure and mechanical properties of textured Al2O3. J Eur Ceram Soc 1995, 15: 283-289.
[3]
Suvaci E, Seabaugh MM, Messing GL. Reaction-based processing of textured alumina by templated grain growth. J Eur Ceram Soc 1999, 19: 2465-2474.
[4]
Zhang Z, Duan XM, Qiu BF, et al. Preparation and anisotropic properties of textured structural ceramics: A review. J Adv Ceram 2019, 8: 289-332.
[5]
Zhu XW, Sakka Y. Textured silicon nitride: Processing and anisotropic properties. Sci Technol Adv Mater 2008, 9: 033001.
[6]
Walton RL, Vaudin MD, Hofer AK, et al. Tailoring particle alignment and grain orientation during tape casting and templated grain growth. J Am Ceram Soc 2019, 102: 2405-2414.
[7]
Seabaugh MM, Messing GL, Vaudin MD. Texture development and microstructure evolution in liquid-phase- sintered α-alumina ceramics prepared by templated grain growth. J Am Ceram Soc 2000, 83: 3109-3116.
[8]
Jiang QG, Liu J, Guo WM, et al. A novel hot pressing flowing sintering for preparation of texturing ceramics. J Am Ceram Soc 2015, 98: 2696-2699.
[9]
Pavlacka RJ, Messing GL. Processing and mechanical response of highly textured Al2O3. J Eur Ceram Soc 2010, 30: 2917-2925.
[10]
Seabaugh MM, Vaudin MD, Cline JP, et al. Comparison of texture analysis techniques for highly oriented α-Al2O3. J Am Ceram Soc 2000, 83: 2049-2054.
[11]
Seabaugh MM, Kerscht IH, Messing GL. Texture development by templated grain growth in liquid-phase- sintered α-alumina. J Am Ceram Soc 1997, 80: 1181-1188.
[12]
Sacks MD, Scheiffele GW, Staab GA. Fabrication of textured silicon carbide via seeded anisotropic grain growth. J Am Ceram Soc 1996, 79: 1611-1616.
[13]
Xue JX, Liu JX, Xie BH, et al. Pressure-induced preferential grain growth, texture development and anisotropic properties of hot pressed hexagonal boron nitride ceramics. Scripta Mater 2011, 65: 966-969.
[14]
Kwon S, Sabolsky EM, Messing GL, et al. High strain, <001> textured 0.675Pb(Mg1/3Nb2/3)O3-0.325PbTiO3 ceramics: Templated grain growth and piezoelectric properties. J Am Ceram Soc 2005, 88: 312-317.10.1111/j.1551-2916.2005.00057.x
[15]
Maurya D, Pramanick A, An K, et al. Enhanced piezoelectricity and nature of electric-field induced structural phase transformation in textured lead-free piezoelectric Na0.5Bi0.5TiO3-BaTiO3 ceramics. Appl Phys Lett 2012, 100: 172906.
[16]
Li P, Zhai JW, Shen B, et al. Ultrahigh piezoelectric properties in textured (K,Na)NbO3-based lead-free ceramics. Adv Mater 2018, 30: 1705171.
[17]
Chang YF, Sun Y, Wu J, et al. Formation mechanism of highly [001]c textured Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3- PbTiO3 relaxor ferroelectric ceramics with giant piezoelectricity. J Eur Ceram Soc 2016, 36: 1973-1981.
[18]
Snel MD, van Hoolst J, de Wilde AM, et al. Influence of tape cast parameters on texture formation in alumina by templated grain growth. J Eur Ceram Soc 2009, 29: 2757-2763.
[19]
Takatori K, Kadoura H, Matsuo H, et al. Microstructural evolution of high purity alumina ceramics prepared by a templated grain growth method. J Ceram Soc Jpn 2016, 124: 432-441.
[20]
Zhang MM, Chang YF, Bermejo R, et al. Improved fracture behavior and mechanical properties of alumina textured ceramics. Mater Lett 2018, 221: 252-255.
[21]
Schlup AP, Costakis WJ Jr, Rheinheimer W, et al. Hot- pressing platelet alumina to transparency. J Am Ceram Soc 2020, 103: 2587-2601.
[22]
Chen H, Shimai S, Zhao J, et al. Highly oriented α-Al2O3 transparent ceramics shaped by shear force. J Eur Ceram Soc 2021, 41: 3838-3843.
[23]
Sun Y, Shimai S, Peng X, et al. A method for gelcasting high-strength alumina ceramics with low shrinkage. J Mater Res 2014, 29: 247-251.
[24]
Yang Y, Shimai S, Wang SW. Room-temperature gelcasting of alumina with a water-soluble copolymer. J Mater Res 2013, 28: 1512-1516.
[25]
Lotgering FK. Topotactical reactions with ferrimagnetic oxides having hexagonal crystal structures—I. J Inorg Nucl Chem 1959, 9: 113-123.
[26]
Hashiba M, Okamoto H, Nurishi Y, et al. The zeta-potential measurement for concentrated aqueous suspension by improved electrophoretic mass transport apparatus— Application to Al2O3, ZrO3 and SiC suspensions. J Mater Sci 1988, 23: 2893-2896.
[27]
Franks GV, Gan Y. Charging behavior at the alumina-water interface and implications for ceramic processing. J Am Ceram Soc 2007, 90: 3373-3388.
[28]
Tsyganenko AA, Mardilovich PP. Structure of alumina surfaces. Faraday Trans 1996, 92: 4843.
[29]
Suzuki TS, Uchikoshi T, Sakka Y. Control of texture in alumina by colloidal processing in a strong magnetic field. Sci Technol Adv Mater 2006, 7: 356-364.
[30]
She JH, Guo JK, Jiang DL. Hot isostatic pressing of α-silicon carbide ceramics. Ceram Int 1993, 19: 347-351.
[31]
Mao XJ, Wang SW, Shimai S, et al. Transparent polycrystalline alumina ceramics with orientated optical axes. J Am Ceram Soc 2008, 91: 3431-3433.
[32]
Yi HL, Mao XJ, Zhou GH, et al. Crystal plane evolution of grain oriented alumina ceramics with high transparency. Ceram Int 2012, 38: 5557-5561.
[33]
Costakis WJ Jr, Schlup A, Youngblood JP, et al. Aligning α-alumina platelets via uniaxial pressing of ceramic-filled polymer blends for improved sintered transparency. J Am Ceram Soc 2020, 103: 3500-3512.
[34]
Krell A, Blank P, Ma HW, et al. Transparent sintered corundum with high hardness and strength. J Am Ceram Soc 2003, 86: 12-18.
[35]
Pringuet A, Takahashi T, Baba S, et al. Fabrication of transparent grain-oriented polycrystalline alumina by colloidal processing. J Am Ceram Soc 2016, 99: 3217-3219.
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 09 July 2021
Revised: 25 November 2021
Accepted: 26 November 2021
Published: 17 March 2022
Issue date: April 2022

Copyright

© The Author(s) 2021.

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 51772309 and 52130207). The authors thank Prof. Jing WANG (Dalian University of Technology) for the synthesis of Al2O3 platelets.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

Reprints and Permission requests may be sought directly from editorial office.

Return