Sintering Behavior and Mechanical Property of B<sub>4</sub>C Ceramics Fabricated by Spark Plasma Sintering

Kim, Kyoung Hun; Chae, Jae Hong; Park, Joo Seok; Kim, Dae Keun; Shim, Kwang Bo; Lee, Byung Ha

doi:10.4191/kcers.2008.45.1.060

Cited by 14 publications

(17 citation statements)

References 12 publications

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“…These results suggest that sputter‐deposited TiB 2 surface coating has oxidized to TiO 2 and H 3 BO 3 upon exposure to air. The presence of oxides typically hinders the densification of B 4 C by contributing to both evaporation‐condensation process and formation of closed pores . Thus, the surface oxide of base B 4 C powder was washed off before sputter deposition and the sputter‐deposited powder was stored in an inert environment.…”

Section: Resultsmentioning

confidence: 99%

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing

et al. 2019

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Small amount of TiB2 (<5 wt%) was added into B4C through a novel method that combines the use of sputter deposition and hot pressing. Sputter deposition provided more uniform dispersion of TiB2 grains with smaller grain sizes as compared to the conventional particulate mixing. Small amount TiB2 addition demonstrated to be an effective way for improving the fracture behavior and toughness of B4C while not sacrificing its outstanding lightweight property to a large extent: 2.3 wt% TiB2 addition brought 15% improvement in indentation fracture toughness while resulting in less than 2% increase in density. The improvement can be attributed to the combination of crack impeding by TiB2 grains and crack deflection at the B4C–TiB2 interfaces. TiB2 also played as grain growth inhibitor resulting in a slight increase (2%) in Vickers hardness. Another intention of employing sputter deposition was to modify the grain boundary of B4C; however, neither formation of Ti‐containing phase nor Ti segregation has been observed at grain boundaries likely due to the poor wettability of B4C.

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Section: Resultsmentioning

confidence: 99%

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing

et al. 2019

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“…Boron carbide (B 4 C) ceramics, and their composites with other ceramics, have recently been receiving considerable attention within the engineering ceramics community [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], especially for their use in structural applications requiring ultrahigh hardness and lightness. The most popular of these applications is perhaps that of ceramic armours for ballistic protection of both personnel and vehicles, but there are others such as wear parts and tribocomponents, and nuclear radiation shields.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the spark-plasma sinterability of B4C nanopowders via room-temperature methylation induced purification

Moshtaghioun

Gómez-Garcı́a

Domínguez‐Rodríguez

et al. 2016

Journal of the European Ceramic Society

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“…Because of the strong covalent bonding the densification rate of boron carbide is quite low. 1,2,12,13,17 Methods as hot pressing, SPS or reactive hot-pressing procedures are principally costly and limited with concern to the product geometry. The principal parameters of boron carbide sintering are described by Thevenot 4 or Suri.…”

Section: Introductionmentioning

confidence: 99%

Pressureless sintering and properties of boron carbide composite materials

Martin

Feng

Michaelis

2019

Int J Applied Ceramic Tech

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Boron carbide and Tantalum boride composites were prepared by pressureless sintering of B 4 C with addition of TaC powder. The effect of TaC addition on the sinterability of boron carbide was studied. High densified ceramic with a relative density of 98.7% was obtained at sintering temperature of 2250°C. The composition and the microstructure of the dense composites are characterized by means of x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive x-ray spectroscopy (EDX). The studies show that the composites contain boron carbide, TaB 2 , and carbon phases with a homogeneous structure. In addition, the correlation between the composition and the electrical conductivity was investigated. The electrical conductivity of the composite increased with increasing addition of TaC, and a change in conduction behavior from semiconducting to metallic was observed.High hardness value of 28.49 ± 1.33 GPa was obtained by the sample with 30 wt% TaC addition. K E Y W O R D S boron carbide, electrical conductivity, pressureless sintering, tantalum boride How to cite this article: Martin H-P, Feng B, Michaelis A. Pressureless sintering and properties of boron carbide composite materials. Int J Appl Ceram Technol.

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Sintering Behavior and Mechanical Property of B₄C Ceramics Fabricated by Spark Plasma Sintering

Cited by 14 publications

References 12 publications

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing

Enhancing the spark-plasma sinterability of B4C nanopowders via room-temperature methylation induced purification

Pressureless sintering and properties of boron carbide composite materials

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Sintering Behavior and Mechanical Property of B4C Ceramics Fabricated by Spark Plasma Sintering

Cited by 14 publications

References 12 publications

Small amount TiB2addition into B4C through sputter deposition and hot pressing

Small amount TiB2addition into B4C through sputter deposition and hot pressing

Enhancing the spark-plasma sinterability of B4C nanopowders via room-temperature methylation induced purification

Pressureless sintering and properties of boron carbide composite materials

Contact Info

Product

Resources

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Sintering Behavior and Mechanical Property of B₄C Ceramics Fabricated by Spark Plasma Sintering

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing

Small amount TiB₂addition into B₄C through sputter deposition and hot pressing