Journal Home > Volume 11 , Issue 4

Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot- pressing using different contents of 3Y2O3-5Al2O3 (molar ratio of 3:5) as the sintering additive. During hot-pressing, the liquid Y3Al5O12 (YAG) phase showing good wettability to h-BN grains was in situ formed through the reaction between Y2O3 and Al2O3, and a coherent relationship between h-BN and YAG was observed with [010]h-BN// [1¯11]YAG and (002)h-BN//(321)YAG. In the YAG liquid phase environment formed during hot-pressing, plate-like h-BN grains were rotated under the uniaxial sintering pressure and preferentially oriented with their basal surfaces perpendicular to the sintering pressure direction, forming textured microstructures with the c-axis of h-BN grains oriented parallel to the sintering pressure direction, which give these composite ceramics anisotropy in their mechanical and thermal properties. The highest texture degree was found in the specimen with 30 wt% YAG, which also possesses the highest anisotropy degree in thermal conductivity. The aggregation of YAG phase was observed in the specimen with 40 wt% YAG, which resulted in the buckling of h-BN plates and significantly reduced the texture degree.


menu
Abstract
Full text
Outline
About this article

Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG

Show Author's information Zhuo ZHANGa,bXiaoming DUANa,b,c( )Zhuo TIANdYujin WANGa,b( )Lan WANGa,bLei CHENa,bBaofu QIUa,bDelong CAIa,bPeigang HEa,bDechang JIAa,b,c( )Yu ZHOUa,b
Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology, Harbin Institute of Technology, Harbin 150001, China
Institute for Advanced Ceramics, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China

Abstract

Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot- pressing using different contents of 3Y2O3-5Al2O3 (molar ratio of 3:5) as the sintering additive. During hot-pressing, the liquid Y3Al5O12 (YAG) phase showing good wettability to h-BN grains was in situ formed through the reaction between Y2O3 and Al2O3, and a coherent relationship between h-BN and YAG was observed with [010]h-BN// [1¯11]YAG and (002)h-BN//(321)YAG. In the YAG liquid phase environment formed during hot-pressing, plate-like h-BN grains were rotated under the uniaxial sintering pressure and preferentially oriented with their basal surfaces perpendicular to the sintering pressure direction, forming textured microstructures with the c-axis of h-BN grains oriented parallel to the sintering pressure direction, which give these composite ceramics anisotropy in their mechanical and thermal properties. The highest texture degree was found in the specimen with 30 wt% YAG, which also possesses the highest anisotropy degree in thermal conductivity. The aggregation of YAG phase was observed in the specimen with 40 wt% YAG, which resulted in the buckling of h-BN plates and significantly reduced the texture degree.

Keywords: anisotropy, texture, liquid phase sintering, hexagonal boron nitride (h-BN)

References(42)

[1]
Song L, Ci L, Lu H, et al. Large scale growth and characterization of atomic hexagonal boron nitride layers. Nano Lett 2010, 10: 3209-3215.
[2]
Li Y, Ge B, Wu Z, et al. Effects of h-BN on mechanical properties of reaction bonded β-SiAlON/h-BN composites. J Alloys Compd 2017, 703: 180-187.
[3]
Jin H, Li Y, Li X, et al. Functionalization of hexagonal boron nitride in large scale by a low-temperature oxidation route. Mater Lett 2016, 175: 244-247.
[4]
Tian Z, Chen K, Sun S, et al. Crystalline boron nitride nanosheets by sonication-assisted hydrothermal exfoliation. J Adv Ceram 2019, 8: 72-78.
[5]
Xiao L, He WJ, Yin YS. First-principles calculations of structural and elastic properties of hexagonal boron nitride. Adv Mater Res 2009, 79-82: 1337-1340.
[6]
Zhang Z, Duan X, Qiu B, et al. Preparation and anisotropic properties of textured structural ceramics: A review. J Adv Ceram 2019, 8: 289-332.
[7]
Duan X, Wang M, Jia D, et al. Anisotropic mechanical properties and fracture mechanisms of textured h-BN composite ceramics. Mater Sci Eng A 2014, 607: 38-43.
[8]
Jiang P, Qian X, Yang R, et al. Anisotropic thermal transport in bulk hexagonal boron nitride. Phys Rev Materials 2018, 2: 064005.
[9]
Yan W, Zhang Y, Sun H, et al. Polyimide nanocomposites with boron nitride-coated multi-walled carbon nanotubes for enhanced thermal conductivity and electrical insulation. J Mater Chem A 2014, 2: 20958-20965.
[10]
Eichler J, Lesniak C. Boron nitride (BN) and BN composites for high-temperature applications. J Eur Ceram Soc 2008, 28: 1105-1109.
[11]
Fang H, Bai SL, Wong CP. “White graphene”-hexagonal boron nitride based polymeric composites and their application in thermal management. Compos Commun 2016, 2: 19-24.
[12]
Meziani MJ, Song WL, Wang P, et al. Boron nitride nanomaterials for thermal management applications. ChemPhysChem 2015, 16: 1339-1346.
[13]
Li X, Long Y, Ma L, et al. Coating performance of hexagonal boron nitride and graphene layers. 2D Mater 2021, 8: 034002.
[14]
Zhang Z, Hu S, Chen J, et al. Hexagonal boron nitride: A promising substrate for graphene with high heat dissipation. Nanotechnology 2017, 28: 225704.
[15]
Zhu Z, Wang P, Lv P, et al. Densely packed polymer/boron nitride composite for superior anisotropic thermal conductivity. Polym Compos 2018, 39: E1653-E1658.
[16]
Wilk A, Rutkowski P, Zientara D, et al. Aluminium oxynitride- hexagonal boron nitride composites with anisotropic properties. J Eur Ceram Soc 2016, 36: 2087-2092.
[17]
Shi Z, Wang J, Qiao G, et al. Effects of weak boundary phases (WBP) on the microstructure and mechanical properties of pressureless sintered Al2O3/h-BN machinable composites. Mater Sci Eng A 2008, 492: 29-34.
[18]
Jin H, Shi Z, Li X, et al. Effect of rare earth oxides on the microstructure and properties of mullite/hBN composites. Ceram Int 2017, 43: 3356-3362.
[19]
Liu Z, Zhao S, Yang T, et al. Improvement in mechanical properties in AlN-h-BN composites with high thermal conductivity. J Adv Ceram 2021, 10: 1317-1325.
[20]
Chen J, Chen J. Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites. J Eur Ceram Soc 2020, 40: 456-462.
[21]
Chen J, Chen J, Zhang X, et al. Fabrication and mechanical properties of h-BN based composites containing dual glass phases. J Eur Ceram Soc 2018, 38: 3210-3216.
[22]
Zhang Z, Duan X, Qiu B, et al. Anisotropic properties of textured h-BN matrix ceramics prepared using 3Y2O3- 5Al2O3(-4MgO) as sintering additives. J Eur Ceram Soc 2019, 39: 1788-1795.
[23]
Zhang X, Chen J, Li X, et al. Microstructure and mechanical properties of h-BN/Y2SiO5 composites. Ceram Int 2015, 41: 1279-1283.
[24]
Kusunose T, Sekino T. Thermal conductivity of hot-pressed hexagonal boron nitride. Scripta Mater 2016, 124: 138-141.
[25]
Chen J, Chen J, Zhang H, et al. Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites. J Adv Ceram 2018, 7: 317-324.
[26]
Qiu B, Duan X, Zhang Z, et al. Microstructural evolution of h-BN matrix composite ceramics with La-Al-Si-O glass phase during hot-pressed sintering. J Adv Ceram 2021, 10: 493-501.
[27]
Ni DW, Zhang GJ, Kan YM, et al. Textured h-BN ceramics prepared by slip casting. J Am Ceram Soc 2011, 94: 1397-1404.
[28]
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.
[29]
Zhang Z, Duan X, Qiu B, et al. Microstructure evolution and grain growth mechanisms of h-BN ceramics during hot-pressing. J Eur Ceram Soc 2020, 40: 2268-2278.
[30]
Duan X, Jia D, Wang Z, et al. Influence of hot-press sintering parameters on microstructures and mechanical properties of h-BN ceramics. J Alloys Compd 2016, 684: 474-480.
[31]
Zhang Z, Duan X, Qiu B, et al. Improvement of grain size and crystallization degree of LPSed h-BN composite ceramics by amorphization/nanocrystallization of raw h-BN powders. J Alloys Compd 2021, 852: 156765.
[32]
Hubäĉek M, Ueki M, Sató T. Orientation and growth of grains in copper-activated hot-pressed hexagonal boron nitride. J Am Ceram Soc 1996, 79: 283-285.
[33]
Lotgering FK. Topotactical reactions with ferrimagnetic oxides having hexagonal crystal structures-I. J Inorg Nucl Chem 1959, 9: 113-123.
[34]
Pavlacka R, Bermejo R, Chang Y, et al. Fracture behavior of layered alumina microstructural composites with highly textured layers. J Am Ceram Soc 2013, 96: 1577-1585.
[35]
Yagi H, Yanagitani T, Numazawa T, et al. The physical properties of transparent Y3Al5O12: Elastic modulus at high temperature and thermal conductivity at low temperature. Ceram Int 2007, 33: 711-714.
[36]
Tong H, Wang N, Zou Y, et al. Densification and mechanical properties of YAG ceramics fabricated by air pressureless sintering. J Electron Mater 2019, 48: 374-385.
[37]
Klein PH, Croft WJ. Thermal conductivity, diffusivity, and expansion of Y2O3, Y3Al5O12, and LaF3 in the range 77°- 300°K. J Appl Phys 1967, 38: 1603-1607.
[38]
Paszkowicz W, Pelka JB, Knapp M, et al. Lattice parameters and anisotropic thermal expansion of hexagonal boron nitride in the 10-297.5 K temperature range. Appl Phys A 2002, 75: 431-435.
[39]
Sato Y, Taira T. The studies of thermal conductivity in GdVO(4), YVO(4), and Y(3)Al(5)O(12) measured by quasi- one-dimensional flash method. Opt Express 2006, 14: 10528-10536.
[40]
Gavrichev KS, Solozhenko VL, Gorbunov VE, et al. Low- temperature heat capacity and thermodynamic properties of four boron nitride modifications. Thermochimica Acta 1993, 217: 77-89.
[41]
Slack GA, Tanzilli RA, Pohl RO, et al. The intrinsic thermal conductivity of AIN. J Phys Chem Solids 1987, 48: 641-647.
[42]
Watari K, Ishizaki K, Fujikawa T. Thermal conduction mechanism of aluminium nitride ceramics. J Mater Sci 1992, 27: 2627-2630.
Publication history
Copyright
Acknowledgements
Rights and permissions

Publication history

Received: 22 August 2021
Revised: 17 October 2021
Accepted: 09 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. 52072089, 51832002, 51602074, and 51672060) and the Heilongjiang Touyan Team Program.

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 includ ed 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/.

Return