Effect of TiB2 particles on microstructure and mechanical properties of B4C–TiB2 ceramics prepared by hot pressing

Guo, Wenchao; He, Qianglong; Wang, Aiyang; Tian, Tian; Li, Chun; Hu, Lanxin; Wang, Weimin; Wang, Hao; Fu, Zhengyi

doi:10.1016/j.ceramint.2022.09.327

Cited by 5 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the initial flaw size in B 4 C-TiB 2 composite ceramics is comparable to the TiB 2 grains size [31]. Therefore, an increasing TiB 2 grain size resulted in a decrease in flexural strength, which was consistent with previous results [40,41]. As shown in Fig.…”

Section: Mechanical Properties Of B 4 C-tib 2 Composite Ceramicssupporting

confidence: 91%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Mechanical Properties Of B 4 C-tib 2 Composite Ceramicssupporting

confidence: 91%

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

View full text Add to dashboard Cite

show abstract

“…In order to achieve the densification and sintering of B 4 C-based ceramics, various sintering aids and second phases were introduced to reduce the sintering temperature. It has been found that carbides and borides such as SiC, TiC, HfC, TaB 2 , TiB 2 , and ZrB 2 benefit the performance improvement of composite ceramics [ 9 , 10 , 11 ]. Chen et al [ 12 ] found that ZrB 2 –ZrC–B 4 C composites have been successfully fabricated by SPRS from B 4 C and different content of Zr, while the flexure strength and hardness decrease first and then increase with increasing Zr content.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical Properties of Composites with Surface Modified B4C for Precision Machining

et al. 2023

View full text Add to dashboard Cite

In order to solve the problem of difficult sintering and high brittleness of B4C-based ceramics, B4C@ZrB2-TiB2 composite powder was synthesized by molten salt method, and B4C–(Zr, Ti)B2 composite ceramics were successfully prepared by spark plasma sintering. The effects of different raw material ratios on the composition, microstructure, and mechanical properties of the prepared composite ceramics were characterized by XRD, XPS, SEM, and TEM. The results show that ZrB2 and TiB2 were grown on the surface of B4C by template mechanism to form a dense nanocrystalline coating, and the original surface of B4C was exposed gradually with the decrease of the ratio of metal powder. When the composite powders were sintered at 1700 °C, ZrB2 and TiB2 formed a solid solution, which can refine grains and improve strength. When the raw material ratio is n(B4C): n(Zr): n(Ti) = 12:1:1, the composite ceramics have excellent comprehensive properties, the Vickers hardness reaches 41.2 GPa.

show abstract

Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings

Subha

Raju

Yadav

et al. 2023

J. Inst. Eng. India Ser. D

View full text Add to dashboard Cite

Effect of TiB2 particles on microstructure and mechanical properties of B4C–TiB2 ceramics prepared by hot pressing

Cited by 5 publications

References 34 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

Improvement of Mechanical Properties of Composites with Surface Modified B4C for Precision Machining

Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings

Contact Info

Product

Resources

About

Effect of TiB2 particles on microstructure and mechanical properties of B4C–TiB2 ceramics prepared by hot pressing

Cited by 5 publications

References 34 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

Improvement of Mechanical Properties of Composites with Surface Modified B4C for Precision Machining

Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings

Contact Info

Product

Resources

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