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

TitleSintering and mechanical properties of β‐SiC powder obtained from waste tires
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2016
AuthorsMagnani, G., Galvagno Sergio, Sico G., Portofino Sabrina, Freda C., and Burresi Emiliano
JournalJournal of Advanced Ceramics

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. © 2016, The Author(s).


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Citation KeyMagnani201640