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Journal of Advanced Ceramics 2016, 5(1): 40-46 https://doi.org/10.1007/s40145-015-0170-0
Research Article | Open Access | Issue | Published: 07 January 2016

Sintering and mechanical properties of β-SiC powder obtained from waste tires

Show Author's Information G. MAGNANIa( ),  S. GALVAGNOb,  G. SICOb,  S. PORTOFINOb,  C. FREDAb,  E. BURRESIc
ENEA, SSPT-PROMAS-TEMAF, Faenza Research Laboratories, Via Ravegnana 186, 48018 Faenza （RA）, Italy
ENEA, SSPT-PROMAS-NANO, Portici Research Center, P.le Enrico Fermi 1, 80055 Portici （NA）, Italy
ENEA, SSPT-PROMAS-MATAS, Brindisi Research Center, S.S. 7 Appia km 706,00, 72100 Brindisi, Italy
Keywords:
sintering, mechanical properties, SiC, structural application
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MAGNANI G, GALVAGNO S, SICO G, et al. Sintering and mechanical properties of β-SiC powder obtained from waste tires. Journal of Advanced Ceramics, 2016, 5(1): 40-46. https://doi.org/10.1007/s40145-015-0170-0
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Abstract Full text About this article

Plasma synthesized SiC powder obtained from quartz and carbonaceous residue of waste tires was successfully sintered at 1925 ℃ by pressureless liquid-phase method using yttria and alumina as sintering aids (T-SiC). Comparison with sintered SiC obtained from commercial powder (C-SiC) put in evidence of similar sintered density (98%T.D.), but much finer microstructure of T-SiC than that of C-SiC. T-SiC also showed higher flexural strength than C-SiC both at room temperature (508 vs. 458 MPa) and at 1500 ℃ (280 vs. 171 MPa). Difference in liquid phase was responsible for the differences in hardness and fracture toughness. The high value of the Young’s modulus of T-SiC (427 MPa) confirmed the high degree of sinterability of this powder and that it can be a promising candidate for structural applications with high added value.


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About this article

Sintering and mechanical properties of β-SiC powder obtained from waste tires

Show Author's information G. MAGNANIa( ), S. GALVAGNOb, G. SICOb, S. PORTOFINOb, C. FREDAb, E. BURRESIc
ENEA, SSPT-PROMAS-TEMAF, Faenza Research Laboratories, Via Ravegnana 186, 48018 Faenza （RA）, Italy
ENEA, SSPT-PROMAS-NANO, Portici Research Center, P.le Enrico Fermi 1, 80055 Portici （NA）, Italy
ENEA, SSPT-PROMAS-MATAS, Brindisi Research Center, S.S. 7 Appia km 706,00, 72100 Brindisi, Italy

Abstract

Plasma synthesized SiC powder obtained from quartz and carbonaceous residue of waste tires was successfully sintered at 1925 ℃ by pressureless liquid-phase method using yttria and alumina as sintering aids (T-SiC). Comparison with sintered SiC obtained from commercial powder (C-SiC) put in evidence of similar sintered density (98%T.D.), but much finer microstructure of T-SiC than that of C-SiC. T-SiC also showed higher flexural strength than C-SiC both at room temperature (508 vs. 458 MPa) and at 1500 ℃ (280 vs. 171 MPa). Difference in liquid phase was responsible for the differences in hardness and fracture toughness. The high value of the Young’s modulus of T-SiC (427 MPa) confirmed the high degree of sinterability of this powder and that it can be a promising candidate for structural applications with high added value.

Keywords: sintering, mechanical properties, SiC, structural application

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Publication history
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Publication history

Received: 12 June 2015
Revised: 05 September 2015
Accepted: 14 September 2015
Published: 07 January 2016
Issue date: June 2021

Copyright

© The author(s) 2016

Acknowledgements

This study was supported by the Seventh Framework Programme (FP7) 2007–2013, in the frame of the TyGRe project (Contract No. 226549). The authors wish to thank Dr. Paride Fabbri (ENEA-Faenza), Dr. Giancarlo Raiteri (ENEA-Faenza), Dr. Alida Brentari (Certimac Scarl), and Dr. Anna De Girolamo Del Mauro (ENEA-Portici) for their fruitful collaboration.

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