Wire electrical discharge machining and microstructural analysis of hot-pressed boron carbide

Pramanick, Ayan; Dey, Partha Pratim; Das, Pankaj; Bhukhanwala, Niraj P.

doi:10.1016/j.micron.2020.102991

Cited by 3 publications

(3 citation statements)

References 37 publications

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“…However, B 4 C, with a low diffusion coefficient and strong covalent bond, is exceedingly difficult to sinter. Additionally, the application of B 4 C is significantly restricted owing to its low‐fracture toughness, which is merely 2.20 MPa/m 1/2 24,25 . Many investigators have enhanced the density and fracture toughness of B 4 C by incorporating the second phase or sintering additives.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the application of B 4 C is significantly restricted owing to its low-fracture toughness, which is merely 2.20 MPa/m 1/2 . 24,25 Many investigators have enhanced the density and fracture toughness of B 4 C by incorporating the second phase or sintering additives. SiC is a lightweight and high-hardness ceramic material with similar characteristics to B 4 C; however, SiC has higher fracture toughness than B 4 C. Therefore, the B 4 C-SiC composites prepared by adding SiC as the second phase can retain the inherent characteristics of B 4 C ceramic while enhancing the fracture toughness and density.…”

Section: Introductionmentioning

confidence: 99%

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Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Wang,

Jia,

Chen

et al. 2024

Int J Applied Ceramic Tech

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The present study investigates the influences of SiC incorporation on the microstructure and corrosion behavior of B4C–nSiC composites in molten FLiNaK salt at 800°C. The corrosion characteristics and mechanisms of B4C–nSiC composites in molten FLiNaK salt were thoroughly characterized and extensively discussed. The B4C–nSiC composites exhibited a more refined grain size and lowered apparent porosity as the SiC content increased. Additionally, the concentration of high‐angle grain boundaries (HAGBs) in B4C–nSiC composites increased as the SiC content increased. The incorporation of 10 wt.% SiC improved the corrosion resistance of B4C–nSiC composites against molten FLiNaK salt. However, the incorporation of excessive SiC (≥20 wt.%) did not improve the corrosion resistance. The best corrosion resistance of B4C–10% SiC ceramic composite was attributed, on the one hand, to its relatively low apparent porosity and the low concentration of HAGBs with high structural disorder. On the other hand, the selective corrosion of B4C in B4C–10% SiC ceramic composite rapidly formed a sufficiently thick and highly graphitized C‐rich layer on its surface during the initial stages of the corrosion test. The C‐rich layer maintained the integral structure of the ceramic and prevented subsequent corrosive medium from penetrating into the ceramic.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Wang,

Jia,

Chen

et al. 2024

Int J Applied Ceramic Tech

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“…Boron carbide (B 4 C) is a crucial material for heavy armor and high temperature resistant parts due to its ability to maintain its hardness at temperatures around 1100 and 1300 °C [10]. It appears to have good thermal and chemical stability, low density (2.52 g cm −3 ), and rigidity [11].…”

Section: Introductionmentioning

confidence: 99%

Examining the surface roughness and kerf quality of micro-slots cut on the surfaces of Ti-B₄C nanocomposites by WEDM: a desirability approach

G¹,

Lakshmanan²,

Mahalingam³

2022

Mater. Res. Express

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Micro slots and textures are created on Titanium (Ti) composites to improve its surface characteristics. Micro-textured Ti composites are generally recommended for bio implants, automobile, and aerospace components. In the current research, Ti-B4C nanocomposites were prepared by powder metallurgical route. Micro slots were cut on the Ti-B4C surfaces by Wire Electrical Discharge Machining (WEDM) Technology by varying the current, pulse-ON time, and pulse-OFF time. Scanning electron microscopy and XRD analysis validates the uniform distribution and inclusion of B4C nanoparticles in Ti matrix. Response surface methodology was used to plan the experimental runs. Analysis of variance and desirability analysis were employed to identify the most suitable machining factors for obtaining the minimum surface roughness, lower kerf width and higher material removal rate (MRR). Increase in applied current and pulse-ON time, increases the MRR. Increase of pulse-OFF time from 50μs to 60μs gradually reduces the MRR and reduce the surface roughness of the cut slots. Contrastingly an increase in pulse-ON time increases the roughness due to an extensive melting and resolidification of Ti nanocomposites. The morphology of the WEDMed surface reveals the recast layer and localized melting zones on the cut surfaces.

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Novel B4C TiB2 composites with high electrical and low thermal conductivity by selective grain growth in reactive sintering

Zhao,

Sun,

Wang

et al. 2024

Journal of the European Ceramic Society

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Wire electrical discharge machining and microstructural analysis of hot-pressed boron carbide

Cited by 3 publications

References 37 publications

Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Examining the surface roughness and kerf quality of micro-slots cut on the surfaces of Ti-B₄C nanocomposites by WEDM: a desirability approach

Novel B4C TiB2 composites with high electrical and low thermal conductivity by selective grain growth in reactive sintering

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Wire electrical discharge machining and microstructural analysis of hot-pressed boron carbide

Cited by 3 publications

References 37 publications

Influence of SiC content in B4C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Influence of SiC content in B4C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Examining the surface roughness and kerf quality of micro-slots cut on the surfaces of Ti-B4C nanocomposites by WEDM: a desirability approach

Novel B4C TiB2 composites with high electrical and low thermal conductivity by selective grain growth in reactive sintering

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Product

Resources

About

Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Influence of SiC content in B₄C–nSiC composites corrosion in molten FLiNaK salt at 800°C

Examining the surface roughness and kerf quality of micro-slots cut on the surfaces of Ti-B₄C nanocomposites by WEDM: a desirability approach