Microstructure and mechanical properties of super-hard B4C ceramic fabricated by spark plasma sintering with (Ti3SiC2+Si) as sintering aid
Source abstract
Abstract
Abstract B4C ceramics were fabricated by spark plasma sintering with 5% (Ti3SiC2+Si) as sintering aid. The effects of sintering temperatures and sintering aid on microstructures and properties of B4C ceramics were investigated. The results indicated that the addition of a small amount of (Ti3SiC2+Si) could effectively improve the sintering characteristic of B4C ceramics and reduce the sintering temperature. The as-sintered ceramics fabricated at 1700 °C exhibited excellent mechanical properties, including a super-high Vickers hardness of 38.4 GPa, a high flexural strength of 457.6 MPa and a good fracture toughness of 5.61 MPa m0.5. Following reasons may be responsible for the improvement of the hardness of B4C ceramics: high relative density due to the combination use of (Ti3SiC2+Si) sintering aids and SPS technology, fine-grained structure of the B4C ceramics benefited from the low sintering temperature, formation of the second phases TiB2 and SiC by chemical reaction and existence of the nano-sized unit of (TiB2+SiC) in B4C grains.
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Research context
OpenAlex topics: Aluminum Alloys Composites Properties · Boron and Carbon Nanomaterials Research · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (42)
Show source-provided references
1. Synthesis and consolidation of boron carbide: a review10.1179/095066009X12506721665211 ↗
2. Microsructure characterization of spark plasma sintered boron carbide ceramics10.1016/j.ceramint.2009.09.004 ↗
3. Boron carbide: structure, properties, and stability under stress10.1111/j.1551-2916.2011.04865.x ↗
4. Boron carbide–a comprehensive review10.1016/0955-2219(90)90048-K ↗
5. Pressureless sintering of boron carbide10.1016/j.ceramint.2009.07.034 ↗
6. Shock-induced localized amorphization in boron-carbide10.1126/science.1080819 ↗
7. The effect of sintering parameters on spark plasma sintering of B4C10.1016/j.ceramint.2017.05.167 ↗
8. Densification behavior and related phenomena of spark plasma sintered boron carbide10.1016/j.ceramint.2013.08.106 ↗
9. The effect of Ti and TiO2 additions on the pressureless sintering of B4C10.1007/s11661-999-0230-6 ↗
10. Microstructure and mechanical properties of B4C–TiB2 composites prepared by reaction hot pressing using Ti3SiC2 as additive10.1016/j.ceramint.2015.08.160 ↗
11. A new rapid route for in situ synthesizing monolithic TiB ceramic10.1111/j.1551-2916.2011.04694.x ↗
12. Low-temperature densification of TiB2 ceramic by the spark plasma sintering process with Ti as a sintering aid10.1016/j.scriptamat.2011.10.030 ↗
13. Densification of B4C nanopowder with nanograin retention by spark-plasma sintering10.1016/j.jeurceramsoc.2014.12.021 ↗
14. Densification behavior and related phenomena of spark plasma sintered boron carbide10.1016/j.ceramint.2013.08.106 ↗
15. The sintering mechanism in spark plasma sintering – proof of the occurrence of spark discharge10.1016/j.scriptamat.2014.03.011 ↗
16. Enhancement of sinterability and mechanical properties of B4C ceramics using Ti3AlC2 as a sintering aid10.1039/C5RA14191E ↗
17. Densification and mechanical properties of B4C with Al2O3 as a sintering aid10.1111/j.1151-2916.2000.tb01647.x ↗
18. Effect of iron on the wetting, sintering ability, and the physical and mechanical properties of boron carbide composites: a review10.1016/j.ijrmhm.2016.02.007 ↗
19. The effect of Si on the microstructure and mechanical properties of spark plasma sintered boron carbide10.1016/j.matchar.2017.11.010 ↗
20. Transient liquid phase spark plasma sintering of B4C-based ceramics using Ti-Al intermetallics as sintering aid10.1016/j.jeurceramsoc.2016.03.028 ↗
21. Microstructure and mechanical properties of B4C based ceramics with Fe3Al as sintering aid by spark plasma sintering10.1016/j.jeurceramsoc.2014.02.014 ↗
22. Structural modifications induced by ion irradiation and temperature in boron carbide B4C10.1016/j.nimb.2015.07.082 ↗
23. Processing and mechanical properties of boron carbide sintered with TiC10.1016/S0955-2219(98)00071-5 ↗
24. The effect of aluminum on the microstructure and phase composition of boron carbide infiltrated with silicon10.1016/j.matchemphys.2009.08.023 ↗
25. Effect of alumina on the structure and mechanical properties of spark plasma sintered boron carbide10.1111/jace.13178 ↗
26. Influence of spark plasma sintering parameters on densification and mechanical properties of boron carbide10.1016/j.ijrmhm.2013.09.004 ↗
27. Conversion from nano - to micron - sized structures: experimental observations10.1016/j.jeurceramsoc.2003.10.033 ↗
28. Microstructures and mechanical properties of B4C–SiC intergranular/intragranular nanocomposite ceramics fabricated from B4C, Si, and graphite powders10.1016/j.jeurceramsoc.2014.02.032 ↗
29. Silicon nitride based ceramic nanocomposites10.1111/j.1151-2916.1996.tb07914.x ↗
30. Hardness and wear resistance of B4C ceramics prepared with several additives10.1016/j.matlet.2005.04.047 ↗
31. K. M. Taylor, N. Falls, R. J. Palicka, Dense Carbide Composite for Armor and Abrasives, US patent no. 3 765 300, 1973.
32. Ultrahard nanotwinned cubic boron nitride10.1038/nature11728 ↗
33. Superhard nanocomposite of dense polymorphs of boron nitride: noncarbon material has reached diamond hardness10.1063/1.2711277 ↗
34. Creation of nanostuctures by extreme conditions: high-pressure synthesis of ultrahard nanocrystalline cubic boron nitride10.1002/adma.201104361 ↗
35. Fabrication of TiCp/Ti–6Al–4V surface composite via friction stir processing (FSP): process optimization, particle dispersion-refinement behavior and hardening mechanism10.1016/j.msea.2013.03.019 ↗
36. Processing of dense nanostructured HAP ceramics by sintering and hot pressing10.1016/j.ceramint.2008.07.007 ↗
37. Spark plasma sintering of hydroxyapatite powders10.1016/S0142-9612(01)00076-X ↗
38. Preparation of B4C–SiC composite ceramics through hot pressing assisted by mechanical alloying10.1016/j.ijrmhm.2013.04.012 ↗
39. Effect of spark plasma sintering parameters on microstructure and room-temperature hardness and toughness of fine-grained boron carbide (B4C)10.1016/j.jeurceramsoc.2012.08.028 ↗
40. The effect of Si on the microstructure and mechanical properties of spark plasma sintered boron carbide10.1016/j.matchar.2017.11.010 ↗
41. Three-step reactive hot pressing of B4C–ZrB2 ceramics10.1016/j.jeurceramsoc.2015.11.022 ↗
42. Microstructure and mechanical properties of B4C-TiB2-SiC composites toughened by composite structural toughening phases10.1111/jace.14815 ↗