Reactive-sintering B4C matrix composite for armor applications

Wu, Chao; Li, Yunkai; Wan, Chunlei

doi:10.1007/s12598-020-01404-6

Cited by 13 publications

(7 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[64]), and by applying the elastic modulus values as reported in Refs. [65][66][67][68], we can estimate that the σth is 7.7-23.0, 11.2-33.5, 11.7-35.0 and 13.3-40.0 GPa for 5Y-TZP, Si3N4(J), SiC and Al2O3 ceramics, respectively. It is exciting that the theoretical σmax values for these four typical structural ceramics obtained by linear extrapolation are in good agreement with the σth values.…”

Section: Effect Of Notch Depthmentioning

confidence: 99%

See 1 more Smart Citation

Standardization of the Laser Notching Method for Measuring Fracture Toughness in Structural Ceramics

Wang

Zhao

Huang

et al. 2021

Preprint

View full text Add to dashboard Cite

The single-edge V-notched beam (SEVNB) method based on the laser notching approach can effectively overcome the shortcoming of time-consuming and avoid large errors in traditional fracture toughness measurement ways, nevertheless the laser notching method has not yet been standardized. Taking oxide (ZrO2 and Al2O3), carbide (SiC), nitride (Si3N4) and boride (ZrB2-based) ceramics as the research objects, this paper systematically discussed the effects of notch tip sharpness, notch depth and equivalent notch angle on the measured value of fracture toughness, thereby clearly defined the range of these parameters that required for measuring the fracture toughness accurately. Furthermore, in order to give full play to the advantages of the laser notching method, the feasibility of sample miniaturization was also discussed. This study could provide important data reference and theoretical basis for the standardization of laser method in the near future.

show abstract

Section: Effect Of Notch Depthmentioning

confidence: 99%

“…Rely on the relationship between theoretical strength and elastic modulus (σth is in the order of ~E/10 to E/30 in Ref [64][65][66][67][68],. we can estimate that the σth is 7.7-23.0, 11.2-33.5, 11.7-35.0 and 13.3-40.0 GPa for 5Y-TZP, Si3N4(J), SiC and Al2O3 ceramics, respectively.…”

mentioning

confidence: 99%

Standardization of the Laser Notching Method for Measuring Fracture Toughness in Structural Ceramics

Wang

Zhao

Huang

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…[34] There are many studies on the ballistic properties of boron carbide, which is a good armor material with high hardness and low-density. [35][36][37][38] Xia et al [39] conducted a study on aramid/epoxy composite filled with boron carbide particles. They found that the stab resistance of aramid/epoxy composite was improved up to 428% by using boron carbide additive.…”

Section: Introductionmentioning

confidence: 99%

The effect of boron carbide additive on the low‐velocity impact properties of low‐density foam core composite sandwich structures

et al. 2021

View full text Add to dashboard Cite

Sandwich structures with carbon fiber-epoxy face sheets and polyvinyl chloride foam core material are known for their high strength and flexural stiffness despite their low weight. However, the structural response, in terms of crush strength, of the particles added sandwich structures are not very well known under impact loading conditions. In this study, the impact resistance and damage characteristics of particle added low weight composite sandwich structures were investigated with a low-velocity drop weight impact test device. Boron carbide (B 4 C) particles, which had excellent hardness, thermoelectric, and radiation absorbing characteristics, were used as an additive for the epoxy matrix. For this purpose, 2%, 5%, and 10% by weight additives were mixed into the epoxy matrix and sandwich structures were produced with hand lay-up followed by vacuum bagging method. All configurations were subjected to low-velocity drop weight impact test at three different energy levels (10, 17.50, and 25 J). The results obtained from the experiments and the images of the post-impact damage of the sandwich structures were presented comparatively. According to the test results, configurations containing 10% boron carbide (B 4 C) additive has shown the best performance in terms of resistance to impact load. K E Y W O R D S boron carbide (B 4 C) particles, carbon fiber reinforced polymer (CFRP), epoxy matrix modifying, low-density PVC foam core sandwich structures, low-velocity impact properties, radiation shielding barriers

show abstract

“…Boron carbide (B 4 C) ceramics are interesting structural ceramics in view of their outstanding physical and mechanical properties, especially the combination of low density and extremely high hardness which make them superior anti-ballistic materials over other armor ceramics (such as Al 2 O 3 , SiC) [1][2][3]. However, the expensive costs of B 4 C ceramics fabricated through the hot isostatic pressing (HIP) method severely limits its wide application in the armor protection field [4][5][6]. In addition, its low self-diffusivity efficiency indicates that the sintered body could not achieve the goal of densification through the single solid-state sintering technique.…”

Section: Introductionmentioning

confidence: 99%

Effects of TiB2 Particles on the Microstructure Evolution and Mechanical Properties of B4C/TiB2 Ceramic Composite

Niu¹,

Zhu

You³

et al. 2021

Materials

View full text Add to dashboard Cite

B4C/TiB2 ceramic composites reinforced with three size scales (average particle size: 7 μm, 500 nm, and 50 nm) of TiB2 were prepared by using a pressureless sintering furnace at 2100 °C under Ar atmosphere for 60 min. The results demonstrated that during the sintering process, TiB2 located on the boundaries between different B4C grains could inhibit the grain growth which improved the mass transport mechanism and sintering driving force. A semi-coherent interface between B4C and SiC was found, which is supposed to help to reduce the interface energy and obtain good mechanical properties of the B4C/TiB2 ceramic composite. On sample cooling from sintering temperature to room temperature, the residual tensile stress fields formed at the TiB2 interfaces owning to the thermo-elastico properties mismatched, which might have contributed to increase the ability of the sample to resist crack propagation. The results showed that the relative density, Vickers hardness, and fracture toughness of the composite with 20 wt.% submicron and 10 wt.% nano-TiB2 were significantly improved, which were 98.6%, 30.2 GPa, and 5.47 MPa·m1/2, respectively.

show abstract

Reactive-sintering B4C matrix composite for armor applications

Cited by 13 publications

References 87 publications

Standardization of the Laser Notching Method for Measuring Fracture Toughness in Structural Ceramics

Standardization of the Laser Notching Method for Measuring Fracture Toughness in Structural Ceramics

The effect of boron carbide additive on the low‐velocity impact properties of low‐density foam core composite sandwich structures

Effects of TiB2 Particles on the Microstructure Evolution and Mechanical Properties of B4C/TiB2 Ceramic Composite

Contact Info

Product

Resources

About