Mechanical properties of B4C–SiC composites fabricated by hot-press sintering

So, Sung Min; Choi, Woo Hyuk; Kim, Kyoung Hun; Park, Joo Seok; Kim, Min Suk; Park, Jongee; Lim, Youn-Mook; Kim, Hyung Sun

doi:10.1016/j.ceramint.2019.12.222

Cited by 46 publications

(9 citation statements)

References 26 publications

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“…The reduced hardness is attributed to the increased porosity of the ceramics, while the increased fracture toughness is caused by the toughening mechanisms of crack bridging, crack deflection, and crack branching, resulting from the presence of increased B 4 C at the grain boundary. Zhang et al 70 For B 4 C-SiC ceramics prepared via hot-press sintering, So et al 72 noted that the hardness of B 4 C-SiC ceramics slightly increases with the increase in B 4 C content from 30 to 70 wt%; the fracture toughness decreases with the increase in B 4 C content, which is attributed to the decrease in the content of SiC with relatively high toughness. When the B 4 C content is 50 wt%, the ceramics achieve the highest bending strength, which is attributed to the smallest grain size, as mentioned in Section 3.1.…”

Section: Phase Compositionmentioning

confidence: 99%

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Zhang

2023

Mater. Adv.

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Section: Phase Compositionmentioning

confidence: 99%

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Zhang

2023

Mater. Adv.

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“…Therefore, many types of secondary phases, such as Al, TiB 2 , SiC, Al 2 O 3 , and TiO 2 , have been explored to facilitate the sintering process by forming a liquid phase and removing the oxide layer formed on the particle surface to improve the mechanical properties of B 4 C-based ceramics and composites. [13][14][15][16][17] However, sintering temperatures higher than 2000 • C are still required.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing

et al. 2023

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Boron carbide (B4C) ceramic composites with excellent mechanical properties were fabricated by hot‐pressing using B4C, silicon carbide (SiC), titanium boride (TiB2), and magnesium aluminum silicate (MAS) as raw materials. The influences of SiC and TiB2 content on the microstructural evolution and mechanical properties of the composites were systematically investigated. The mechanism by which MAS promotes the sintering process of composites was also investigated. MAS exists in composites in the form of amorphous phase. It can effectively remove the oxide layer from the surface of ceramic particles during the high temperature sintering process. The typical values of relative density, hardness, bending strength, and fracture toughness of B4C–SiC–TiB2 composites are 99.6%, 32.61 GPa, 434 MPa, and 6.20 MPa m1/2, respectively. Based on the microstructure observations and finite element modeling, the operative toughening mechanism is mainly attributed to the crack deflection along the grain boundary, which results from the residual stress field generated by the thermal expansion mismatch between B4C and TiB2 phase.

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“…[15][16][17][18][19] Zhang et al 20 added SiC to B 4 C ceramic matrix and found that when the SiC content was 60%, the Vickers hardness of the composite ceramics was as high as 33 GPa, but the fracture toughness was only 3.7 MPa m 1/2 . So et al 21 also fabricated B 4 C-SiC ceramic composites and found that the flexural strength of composite with a content of 70%SiC was 645 GPa, and the fracture toughness was 3.59 MPa m 1/2 . Based on the related research work, our group 22 tried to add 20%SiC to the B 4 C ceramic matrix.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of B₄C–SiC composites self‐mated pairs in seawater and pure water

Chen

Liu

Hao

et al. 2022

Int J Applied Ceramic Tech

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In this paper, the tribological behaviors of B 4 C-SiC composites self-mated pairs in seawater and pure water were investigated, respectively. The results showed that the B 4 C-SiC composite with the content of 20%SiC has good mechanical properties. For the B 4 C-20%SiC self-mated pair in seawater, the abrasive wear is greatly weakened, and the tribo-chemical reactions between the composite surface and water molecules occurred. The tribo-chemical polishing causes very smooth wear surfaces, and the sliding pairs enter to the status of liquid lubrication. An extremely low friction coefficient (0.038) and wear rate (both below the order of magnitude 10 −5 mm 3 /N m) were obtained in this study. Due to the lower viscosity of pure water, the load carrying capacity of the liquid film reduces. So, in pure water, the sliding pair shows slightly higher friction coefficient and wear rate than that in seawater.

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Mechanical properties of B4C–SiC composites fabricated by hot-press sintering

Cited by 46 publications

References 26 publications

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing

Tribological behaviors of B₄C–SiC composites self‐mated pairs in seawater and pure water

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Mechanical properties of B4C–SiC composites fabricated by hot-press sintering

Cited by 46 publications

References 26 publications

Recent progress in B4C–SiC composite ceramics: processing, microstructure, and mechanical properties

Recent progress in B4C–SiC composite ceramics: processing, microstructure, and mechanical properties

Microstructures and mechanical properties of B4C–SiC and B4C–SiC–TiB2 ceramic composites fabricated by hot pressing

Tribological behaviors of B4C–SiC composites self‐mated pairs in seawater and pure water

Contact Info

Product

Resources

About

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Recent progress in B₄C–SiC composite ceramics: processing, microstructure, and mechanical properties

Microstructures and mechanical properties of B₄C–SiC and B₄C–SiC–TiB₂ ceramic composites fabricated by hot pressing

Tribological behaviors of B₄C–SiC composites self‐mated pairs in seawater and pure water