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Research Article | Open Access

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

G. MAGNANIa( )S. GALVAGNObG. SICObS. PORTOFINObC. FREDAbE. 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
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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.

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Journal of Advanced Ceramics
Pages 40-46
Cite this article:
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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Received: 12 June 2015
Revised: 05 September 2015
Accepted: 14 September 2015
Published: 07 January 2016
© The author(s) 2016

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.

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