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.
Titolo: | Pressureless sintered silicon carbide with enhanced mechanical properties obtained by the two-step sintering method |
Autori: | |
Data di pubblicazione: | 2014 |
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Handle: | http://hdl.handle.net/20.500.12079/2445 |
Appare nelle tipologie: | 1.1 Articolo in rivista |