Microstructure and mechanical properties of spark plasma sintered SiC ceramics aided by B4C
Source abstract
Abstract
Abstract Silicon carbide ceramics were densified by spark plasma sintering (SPS) using Silicon carbide (SiC) powders with the sintering aid Boron carbide (B4C). Dense solid-phase sintered SiC ceramics were obtained by SPS with a holding time of 5 min at a temperature of ~1800 °C, which is ~350 °C lower than that required by conventional pressureless sintering (PS). The microstructure and mechanical properties of the ceramics was systematically investigated for different sintering temperatures. The sample relative density, flexural strength, hardness, elastic modulus and fracture toughness were determined to be 98.6%, 592 MPa, 28.3 GPa, 461 GPa and 3.6 MPa m1/2, respectively. The spark plasma sintered specimens showed superior mechanical properties and finer grains compared to the pressurelessly sintered specimen. The densification kinetics for the spark plasma sintered SiC ceramics and the role of B4C in the sintering process were discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Boron and Carbon Nanomaterials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. A route for the pressureless liquid-phase sintering of SiC with low additive content for improved sliding-wear resistance10.1016/j.jeurceramsoc.2011.10.052 ↗
2. Ultra-low-temperature sintering of nanostructured β-SiC10.1111/j.1551-2916.2010.04269.x ↗
3. Flexural strength, fracture toughness, and hardness of silicon carbide and boron carbide armor ceramics10.1111/j.1744-7402.2010.02501.x ↗
4. Synergetic effects of SiC and Csf in ZrB2-based ceramic composites. Part I: densification behavior10.1016/j.ceramint.2015.11.139 ↗
5. A numerical approach to the heat transfer and thermal stress in a gas turbine stator blade made of HfB210.1016/j.ceramint.2019.08.112 ↗
6. The effect of thermal contact resistance on the temperature distribution in a WC made cutting tool10.1016/j.ceramint.2019.07.241 ↗
7. Influence of Ni/Co binders and Mo2C on the microstructure evolution and mechanical properties of (Ti0.93W0.07) C–based cermets10.1016/j.ceramint.2018.06.227 ↗
8. The effect of Oxide, Carbide, Nitride and Boride additives on properties of pressureless sintered SiC: a Review10.1016/j.jeurceramsoc.2019.02.042 ↗
9. Sliding-wear-resistant liquid-phase-sintered SiC processed using α-SiC starting powders10.1111/j.1551-2916.2006.01421.x ↗
10. Pierson · 1996 · 137
11. Self-diffusion in alpha and beta silicon carbide10.1016/0390-5519(79)90024-3 ↗
12. Effects of carbon on phase transformation of β-SiC with Al2O310.1007/BF01729040 ↗
13. Hot-pressing of β-SiC powder with Al-B-C additives10.1111/j.1151-2916.1986.tb04753.x ↗
14. Hot-pressing of silicon carbide with 1 % boron carbide addition10.1111/j.1151-2916.1975.tb11482.x ↗
15. The role of boron and carbon in the sintering of silicon carbode
16. Role of carbon in the sintering of boron-doped silicon carbide10.1111/j.1151-2916.2000.tb01327.x ↗
17. Effects of carbon as a sintering aid in silicon carbide10.1111/j.1151-2916.1990.tb05109.x ↗
18. Mechanical properties of nanostructured silicon carbide consolidated by spark plasma sintering10.1016/j.jeurceramsoc.2012.07.030 ↗
19. Nanoindentation and nanostructural characterization of ZrB2–SiC composite doped with graphite nano-flakes10.1016/j.compositesb.2019.107153 ↗
20. TEM characterization of spark plasma sintered ZrB2–SiC–graphene nanocomposite10.1016/j.ceramint.2018.05.170 ↗
21. Influence of vanadium content on the characteristics of spark plasma sintered ZrB2–SiC–V composites10.1016/j.jallcom.2019.07.117 ↗
22. Superfast densification of oxide/oxide ceramic composites10.1111/j.1151-2916.1999.tb01874.x ↗
23. A critical evaluation of indentation techniques for measuring fracture toughness: I, direct crack measurements10.1111/j.1151-2916.1981.tb10320.x ↗
24. Densification and properties of α‐silicon carbide10.1111/j.1151-2916.1985.tb11527.x ↗
25. Role of boron on the spark plasma sintering of an α-SiC powder10.1016/j.jeurceramsoc.2008.01.002 ↗
26. Densification of SiC by SPS-effects of time, temperature and pressure10.1016/j.jeurceramsoc.2006.10.005 ↗
27. Processing of nano-SiC ceramics: densification by SPS and mechanical characterization10.1016/j.jeurceramsoc.2011.10.006 ↗
28. Microstructure and mechanical properties of silicon carbide processed by Spark Plasma Sintering (SPS)10.1016/j.ceramint.2012.05.003 ↗
29. Processing and characterization of fine-grained monolithic SiC ceramic synthesized by spark plasma sintering10.1016/j.msea.2009.12.027 ↗