Pressureless sintered silicon carbide with enhanced mechanical properties obtained by the two-step sintering method

TitlePressureless sintered silicon carbide with enhanced mechanical properties obtained by the two-step sintering method
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2014
AuthorsMagnani, G., Brentari A., Burresi Emiliano, and Raiteri G.
JournalCeramics International
Volume40
Pagination1759-1763
ISSN02728842
KeywordsBoron and carbons, D. SiC, Mechanical properties, Micro-structural, Pressure-less sintering, Pressureless-sintered, Silicon carbide, Silicon carbide powder, Sintered SiC, Sintering, Two-step sintering
Abstract

The Two-step sintering (TSS) method was applied to the pressureless sintering of commercial silicon carbide powder doped with boron and carbon. The microstructural and mechanical properties of TSS-SiC were compared to those of sintered SiC obtained with the conventional thermal cycle (CS-SiC). TSS-SiC was densified (97.7% T.D.) at 2050 C instead of 2200 C needed for CS-SiC (97% T.D.). Furthermore, TSS-SiC showed finer microstructure and enhanced mechanical properties. In particular, flexural strength of the TSS-SiC materials greatly increased up to 556 MPa, much higher than 341 MPa reached by CS-SiC. © 2013 Elsevier Ltd and Techna Group S.r.l.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84888004125&doi=10.1016%2fj.ceramint.2013.07.075&partnerID=40&md5=b66a6dcce1cf5092aaf00b817870a612
DOI10.1016/j.ceramint.2013.07.075