AI Chat Paper
Note: Please note that the following content is generated by AMiner AI. SciOpen does not take any responsibility related to this content.
{{lang === 'zh_CN' ? '文章概述' : 'Summary'}}
{{lang === 'en_US' ? '中' : 'Eng'}}
Chat more with AI
PDF (2.5 MB)
Submit Manuscript AI Chat Paper
Show Outline
Show full outline
Hide outline
Show full outline
Hide outline
Research Article | Open Access

ZrB2-SiC based composites for thermal protection by reaction sintering of ZrO2+B4C+Si

Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad-500058, India
Show Author Information


Synthesis and sintering of ZrB2-SiC based composites have been carried out in a single-step pressureless reaction sintering (PLRS) of ZrO2, B4C, and Si. Y2O3 and Al2O3 were used as sintering additives. The effect of ratios of ZrO2/B4C, ZrO2/Si, and sintering additives (Y2O3 and Al2O3), was studied by sintering at different temperatures between 1500 and 1680 ℃ in argon atmosphere. ZrB2, SiC, and YAG phases were identified in the sintered compacts. Density as high as 4.2 g/cm3, micro hardness of 12.7 GPa, and flexural strength of 117.6 MPa were obtained for PLRS composites. Filler material was also prepared by PLRS for tungsten inert gas (TIG) welding of the ZrB2-SiC based composites. The shear strength of the weld was 63.5 MPa. The PLRS ZrB2-SiC composites exhibited: (i) resistance to oxidation and thermal shock upon exposure to plasma flame at 2700 ℃ for 600 s, (ii) thermal protection for Cf-SiC composites upon exposure to oxy-propane flame at 2300 ℃ for 600 s.


K Upadhya, JM Yang, WP Hoffmann. Materials for ultrahigh temperature structural applications. Am Ceram Soc Bull 1997, 76: 51-56.
WG Fahrenholtz, GE Hilmas, IG Talmy, et al. Refractory diborides of zirconium and hafnium. J Am Ceram Soc 2007, 90: 1347-1364.
C Mroz. Zirconium diboride. Am Ceram Soc Bull 1994, 73: 141-142.
Z Balak, M Shahedi Asl, M Azizieh, et al. Effect of different additives and open porosity on fracture toughness of ZrB2-SiC-based composites prepared by SPS. Ceram Int 2017, 43: 2209-2220.
Z Balak, M Azizieh, H Kafashan, et al. Optimization of effective parameters on thermal shock resistance of ZrB2-SiC-based composites prepared by SPS: Using Taguchi design. Mater Chem Phys 2017, 196: 333-340.
M Shahedi Asl, F Golmohammadi, MG Kakroudi, et al. Synergetic effects of SiC and Csf in ZrB2-based ceramic composites. Part I: Densification behavior. Ceram Int 2016, 42: 4498-4506.
M Shahedi Asl, MG Kakroudi, I Farahbakhsh, et al. Synergetic effects of SiC and Csf in ZrB2-based ceramic composites. Part II: Grain growth. Ceram Int 2016, 42: 18612-18619.
I Farahbakhsh, Z Ahmadi, M Shahedi Asl. Densification, microstructure and mechanical properties of hot pressed ZrB2-SiC ceramic doped with nano-sized carbon black. Ceram Int 2017, 43: 8411-8417.
Z Ahmadi, B Nayebi, M Shahedi Asl, et al. Fractographical characterization of hot pressed and pressureless sintered AlN-doped ZrB2-SiC composites. Mater Charact 2015, 110: 77-85.
H Zhao, Y He, Z Jin. Preparation of zirconium boride powder. J Am Ceram Soc 1995, 78: 2534-2536.
W-M Guo, G-J Zhang. Reaction processes and characterization of ZrB2 powder prepared by boro/carbothermal reduction of ZrO2 in vacuum. J Am Ceram Soc 2009, 92: 264-267.
P Peshev, G Bliznakov. On the borothermic preparation of titanium, zirconium and hafnium borides. J Less Common Met 1968, 14: 23-32.
L Chen, Y Gu, Z Yang, et al. Preparation and some properties of nanocrystalline ZrB2 powders. Scripta Mater 2004, 50: 959-961.
DD Radev, M Marinov. Properties of titanium and zirconium diborides obtained by self-propagated high-temperature synthesis. J Alloys Compd 1996, 244: 48-51.
J Zou, G-J Zhang, H Zhang, et al. Improving high temperature properties of hot pressed ZrB2-20 vol% SiC ceramic using high purity powders. Ceram Int 2013, 39: 871-876.
H-Y Qiu, W-M Guo, J Zou, et al. ZrB2 powders prepared by boro/carbothermal reduction ZrO2: The effects of carbon source and reaction atmosphere. Powder Technol 2012, 217: 462-466.
H Yuan, J Li, Q Shen, et al. Preparation and thermal conductivity characterization of ZrB2 porous ceramics fabricated by spark plasma sintering. Int J Refract Met H 2013, 36: 225-231.
H Yuan, J Li, Q Shen, et al. In situ synthesis and sintering of ZrB2 porous ceramics fabricated by spark plasma sintering-reactive synthesis (SPS-RS) method. Int J Refract Met H 2012, 34: 3-7.
RV Krishnaro, MZ Alam, DK Das, et al. Synthesis of ZrB2-SiC composite powder in air furnace. Ceram Int 2014, 40: 15647-15653.
RV Krishnarao, R Sankarasubrahmanian. Thermite assisted synthesis of ZrB2 and ZrB2-SiC through B4C reduction of ZrO2 and ZrSiO4 in air. J Adv Ceram 2017, 6: 139-148.
SM Johnson. Ultra high temperature ceramics UHTCs. NASA Technical Report. 2015. Available at
M Orcutt. Heat resistant ceramic parts are now 3-D printable. Available at
ZC Eckel, C Zhou, JH Martin, et al. Additive manufacturing of polymer-derived ceramics. Science 2016, 351: 58-62.
Padovano E. Ceramic multilayer based on ZrB2/SiC system for aerospace applications. Ph.D. Thesis. Politecnico di Torino, 2015.
RV Krishnaro, MZ Alam, DK Das, et al. Pressureless sintering of (ZrB2-SiC-B4C) composites with (Y2O3 + Al2O3) additions. Int J Refract Met H 2015, 52: 55-65.
U Anselmi-Tamburini, M Ohyanagi, ZA Munir. Modelling studies of the effect of twins on the X-ray diffraction patterns of boron carbide. Chem Mater 2004, 16: 4347-4351.
AG Merzhanov. Self-propagating high temperature synthesis: Twenty years of research and findings. In: Combustion and Plasma Synthesis of High Temperature Materials. Z Munir, IB Holt, Eds. New York: VCH, 1990: 1-53.
L Barton, D Nicholls. The hydrogenation of boron monoxide to diborane and the reactions of boron and boron carbide with titanium and zirconium dioxides. J Inorg Nucl Chem 1996, 28: 1367-1372.
S Ran, O van der Biest, J Vleugel. ZrB2 powders synthesis by borothermal reduction. J Am Ceram Soc 2010, 93: 1586-1590.
WM Guo, DW Tan, ZL Zhang, et al. Synthesis of fine ZrB2 powders by new borothermal reduction of coarse ZrO2 powders. Ceram Int 2016, 42: 15087-15090.
X Zhang, X Li, J Hana, et al. Effects of Y2O3 on microstructure and mechanical properties of ZrB2-SiC ceramics. J Alloys Compd 2008, 465: 506-511.
J-G Song, J-G Li, J-R Song, et al. Preparation of high-density YAG/ZrB2 multi-phase ceramics by spark plasma sintering. J Ceram Process Res 2007, 8: 356-358.
WG Fahrenholtz, EW Neuman, H-J Brown-Shaklee, et al. Superhard boride-carbide particulate composites. J Am Ceram Soc 2010, 93: 3580-3583.
X Zhang, P Hu, J Han, et al. Ablation behavior of ZrB2-SiC ultra high temperature ceramics under simulated atmospheric re-entry conditions. Comp Sci Tech 2008, 68: 1718-1726.
JW Zimmermann, GE Hilmas, WG Fahrenholtz. Thermal shock resistance of ZrB2 and ZrB2-30% SiC. Mater Chem Phys 2008, 112: 140-145.
DS King, GE Hilmas, WG Fahrenholtz. Plasma arc welding of TiB2-20 vol% TiC. J Am Ceram Soc 2014, 97: 56-59.
DS King, GE Hilmas, WG Fahrenholtz. Plasma arc welding of ZrB2-20 vol% ZrC ceramics. J Eur Ceram Soc 2014, 34: 3549-3557.
RV Krishnaro, GM Reddy. Gas tungsten arc welding of (ZrB2-SiC) based ultra high temperature ceramic composites. Defence Tech 2015, 11: 188-196.
Journal of Advanced Ceramics
Pages 320-329
Cite this article:
KRISHNARAO RV, BHANUPRASAD VV, REDDY GM. ZrB2-SiC based composites for thermal protection by reaction sintering of ZrO2+B4C+Si. Journal of Advanced Ceramics, 2017, 6(4): 320-329.








Web of Science






Received: 20 June 2017
Revised: 23 August 2017
Accepted: 30 August 2017
Published: 19 December 2017
© The author(s) 2017

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.