Electrical discharge machinable B4C–(Zr, Ti)B2 composites with enhanced mechanical properties

Zhao, Jun; Xia, Xiaojie; Jin, Xing; Wang, Dong; Ding, Xiang; Ran, Songlin

doi:10.1016/j.jallcom.2023.173260

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…The MRR was determined by the cutting rate (v), cutting width (b), and thickness (h) of the sample using the equation: MRR = v × b × h. The detailed experimental procedures were described in our previous study [25]. The Vickers hardness (H V ) and fracture toughness (K IC ) were determined using a hardness tester (HVS, Shanghai Shangcai Testermachine Co., Ltd., China) with an indentation load of 19.61 N and dwell time of 15 s. The fracture toughness was calculated using Evans equation [27]. Ten tests were performed on each sample.…”

Section: Characterizationmentioning

confidence: 99%

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process

Zhao,

Zhang,

et al. 2024

Journal of Advanced Ceramics

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B 4 C-TiB 2 is an advanced electrically conductive ceramic with excellent mechanical and electrical discharge machinable properties. It is challenging and rewarding to achieve highly conductive and hard B 4 C-TiB 2 composites at a minimum content of conductive TiB 2 that has inferior hardness but double specific gravity of the B 4 C matrix. A novel strategy was used to construct conductive networks in B 4 C-15 vol% TiB 2 composite ceramics with B 4 C, TiC, and amorphous B as raw materials by a two-step spark plasma sintering method. The influences of particle size matching between B 4 C and TiC on the conducting of the strategy and the microstructure were discussed based on the selective matrix grain growth mechanism. The mechanical and electrical properties were also systematically investigated. The B 4 C-15 vol% TiB 2 composite ceramic prepared from 10.29 µm B 4 C and 0.05 µm TiC powders exhibited a perfect threedimensional interconnected conductive network with a maximum electrical conductivity of 4.25×10 4 S/m, together with excellent mechanical properties including flexural strength, Vickers hardness, and fracture toughness of 691±58 MPa, 30.30±0.61 GPa, and 5.75±0.32 MPa•m 1/2 , respectively, while the composite obtained from 3.12 µm B 4 C and 0.8 µm TiC powders had the best mechanical properties including flexural strength, Vickers hardness, and fracture toughness of 827±35 MPa, 32.01±0.51 GPa, and 6.45±0.22 MPa•m 1/2 , together with a decent electrical conductivity of 0.65×10 4 S/m.

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Section: Characterizationmentioning

confidence: 99%

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process

Zhao,

Zhang,

et al. 2024

Journal of Advanced Ceramics

Self Cite

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Exceptional strength-toughness-hardness integrated B4C ceramics with synergistic reinforcement of nano-BN and in-situ ceramic phases

Wang,

Zeng,

Zhu

et al. 2025

Composites Part B: Engineering

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Enhanced mechanical properties of boron carbide ceramics prepared by spark plasma sintering with boron nitride nanosheets addition

Wang,

Zeng,

Dai

et al. 2024

Journal of the European Ceramic Society

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Electrical discharge machinable B4C–(Zr, Ti)B2 composites with enhanced mechanical properties

Cited by 3 publications

References 47 publications

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process

Exceptional strength-toughness-hardness integrated B4C ceramics with synergistic reinforcement of nano-BN and in-situ ceramic phases

Enhanced mechanical properties of boron carbide ceramics prepared by spark plasma sintering with boron nitride nanosheets addition

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Electrical discharge machinable B4C–(Zr, Ti)B2 composites with enhanced mechanical properties

Cited by 3 publications

References 47 publications

Tuning mechanical and electrical performances of B 4C–TiB 2 ceramics in a two-step spark plasma sintering process

Tuning mechanical and electrical performances of B 4C–TiB 2 ceramics in a two-step spark plasma sintering process

Exceptional strength-toughness-hardness integrated B4C ceramics with synergistic reinforcement of nano-BN and in-situ ceramic phases

Enhanced mechanical properties of boron carbide ceramics prepared by spark plasma sintering with boron nitride nanosheets addition

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About

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process

Tuning mechanical and electrical performances of B ₄C–TiB ₂ ceramics in a two-step spark plasma sintering process