In situ synthesis and sintering of B4C/ZrB2 composites from B4C and ZrH2 mixtures by spark plasma sintering

Rehman, Sahibzada Shakir; Ji, Wei; Fu, Zhengyi; Wang, Weimin; Wang, Hao; Asif, Muhammad; Zhang, Jinyong

doi:10.1016/j.jeurceramsoc.2014.10.013

Cited by 36 publications

(5 citation statements)

References 34 publications

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“…The fracture toughness shows an overall tendency to increase with the increase in the content of (TiB 2 +SiC), but the growth rate decreases when (TiB 2 +SiC) is more than 10%. The fracture toughness of the B 4 C composites with 10% to 30% (TiB 2 +SiC) distributes on 6.3 MPa·m 1/2 to 6.5 MPa·m 1/2 , which is superior to that of most B 4 C composites toughened by an independent single phase in other reports (2.1‐5.6 MPa·m 1/2 ) . The hardness, flexural strength and fracture toughness of the B 4 C composites obtained in the references are listed in the Table .…”

Section: Resultsmentioning

confidence: 88%

Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases

Zhang

Wang

et al. 2017

J Am Ceram Soc

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B 4 C-TiB 2 -SiC composites toughened by composite structural toughening phases, which are the units of (TiB 2 -SiC) composite, were fabricated through reactive hot pressing with B 4 C, TiC, and Si as raw materials. The units of (TiB 2 -SiC) composite with the size of 10-20 lm are composed of interlocking TiB 2 and SiC with the size of 1-5 lm. The addition of TiC and Si can effectively promote the sintering of B 4 C ceramics. The relative densities of all the B 4 C composites with different contents of TiB 2 and SiC are close to completely dense (98.9%-99.4%), thereby resulting in superior hardness (33.1-36.2 GPa). With the increase in the content of TiB 2 and SiC, the already improved fracture toughness of the B 4 C composite continuously increases (5.3-6.5 MPaÁm 1/2 ), but the flexure strength initially increases and then decreases. When cracks cross the units of the (TiB 2 -SiC) composite, the cracks deflect along the interior boundary of TiB 2 and SiC inside the units. As the crack growth path is lengthened, the crack propagation direction is changed, thereby consuming more crack extension energy. The cumulative contributions improve the fracture toughness of the B 4 C composite. Therefore, the composite structural toughening units of the (TiB 2 -SiC) composite play an important role in reinforcing the fracture toughness of the composites. K E Y W O R D S boron carbide, ceramic matrix composites, hot pressing, mechanical properties, microstructure

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Section: Resultsmentioning

confidence: 88%

Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases

Zhang

Wang

et al. 2017

J Am Ceram Soc

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“…To comply with the SPS size effect and shape effect, it requires enlargement management know-how to attain dense and homogeneous SPS sintered materials. Although SPS research and development on other categories of materials both of ceramics and metals were not discussed in this paper, such as transparent ceramics [75][76][77][78], MMC/FRC/FRM [79][80][81][82], CNT/CNF various composite materials [83][84][85][86][87][88][89][90][91][92][93], thermo-electric semiconductors of SiGe, Bi 2 Te 3 , FeSi 2 , CoSb 3 , MnSi 2, Mg 2 Si, MgFe 2 O 4 systems for clean energy generation [94][95][96][97][98], nuclear materials [99], Nd-Fe-B, Sm 2 Co 17 and ferrite for magnetic materials [100,101], MgB 2 superconducting materials [102], PbTiO 3 dielectric materials [103], lithium battery [104], shape memory alloys, solid cell materials, glassy metals, and optically functional materials, nevertheless, they are promising candidates for industrial SPS applications. Ceramicceramic solid-phase SPS bonding processing is also attractive for industries.…”

Section: Other Industrial Applications By Sps and Recent Demands From Industriesmentioning

confidence: 99%

Progress of Spark Plasma Sintering (SPS) Method, Systems, Ceramics Applications and Industrialization

Tokita

2021

Ceramics

134

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The spark plasma sintering (SPS) method is of great interest to the powder and powder metallurgy industry and material researchers of academia for both product manufacturing and advanced material research and development. Today in Japan, a number of SPS products for different industries have already been realized. Today’s fifth-generation SPS systems are capable of producing parts of increasing size, offering improved functionality, reproducibility, productivity, and cost. For instance, pure nano-Tungsten Carbide WC powder (no additives) is fully densified with a nano-grain-sized structure for glass lens application in the optics industry. The SPS is now moving from scientific academia and/or R&D proto-type materials level usage to practical industry use product stage utilizing in the field of electronics, automotive, mold and die, cutting tools, fine ceramics, clean energy, biomaterials industries, and others. This paper reviews and introduces the peculiar phenomenon of SPS and the progress of SPS technology, method, development of SPS systems, and its industrial product applications.

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“…Boron carbide (B 4 C) is an excellent candidate material in many high-performance fields due to its fantastic properties such as low density (2.52 g/cm 3 ), high melting point, high level of hardness (after diamond and cubic boron nitride), fine chemical stability, good wear resistance, and wonderful neutron absorption capacity [1][2][3]. Due to these excellent properties, B 4 C ceramics have been used in many different fields including cutting tools, grinding wheels, blasting nozzles, lightweight armors, neutron shielding materials, hightemperature-resistance wear parts, etc [4][5][6]. However, the full theoretical density of B 4 C ceramics is difficult to achieve because of the low diffusion coefficient [4,7] caused by a strong covalent bond between B and C, and due to retardation of the densification process by B 2 O 3 present on the surface of B 4 C [8,9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering

Liu

Huang

et al. 2021

Materials

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Boron carbide (B4C) ceramics were synthesized by spark plasma sintering at a temperature between 1600 and 2050 °C without employing any sintering additives. The effect of sintering process parameters, such as temperature, holding time, pressure, hearting rate, and pulsed electric current, and the particle size of the raw powder on the densification behavior and mechanical properties of B4C ceramics, were comprehensively and systematically investigated. Hardness and fracture toughness of B4C that has a density close to the theoretical value were found to be 33.5 ± 0.2 GPa and 3.21 ± 0.13 MPa·m1/2, respectively. Electron backscatter diffraction (EBSD) analysis revealed no abnormal growth of grains due to an increase in holding time and pressure. Twin structures present in ceramics are beneficial for their mechanical performance.

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In situ synthesis and sintering of B4C/ZrB2 composites from B4C and ZrH2 mixtures by spark plasma sintering

Cited by 36 publications

References 34 publications

Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases

Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases

Progress of Spark Plasma Sintering (SPS) Method, Systems, Ceramics Applications and Industrialization

Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering

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In situ synthesis and sintering of B4C/ZrB2 composites from B4C and ZrH2 mixtures by spark plasma sintering

Cited by 36 publications

References 34 publications

Microstructure and mechanical properties of B4C–TiB2–SiC composites toughened by composite structural toughening phases

Microstructure and mechanical properties of B4C–TiB2–SiC composites toughened by composite structural toughening phases

Progress of Spark Plasma Sintering (SPS) Method, Systems, Ceramics Applications and Industrialization

Influence of Sintering Process Conditions on Microstructural and Mechanical Properties of Boron Carbide Ceramics Synthesized by Spark Plasma Sintering

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Product

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Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases

Microstructure and mechanical properties of B₄C–TiB₂–SiC composites toughened by composite structural toughening phases