Compressive properties of pristine and SiC-Te-added MgB 2 powders, green compacts and spark-plasma-sintered bulks

Badica, P.; Batalu, Dan; Burdusel, M.; Grigoroscuta, Mihai Alexandru; Aldica, G.; Enculescu, Monica; Gabor, Raluca Augusta; Wang, Zhiyong; Huang, Ruoxuan; Li, Peifeng

doi:10.1016/j.ceramint.2018.03.008

Cited by 19 publications

(10 citation statements)

References 54 publications

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“…The uniaxial dynamic compression tests of the SPS-ed samples from Table 1 were conducted at the high strain rates of approximately 1000 s −1 in the SHPB system, which has been successfully used to characterize various other ceramics including silicon carbide 15 , alumina 16,17 , boron carbide 18,19 and MgB 2 20 . The end surfaces of the SPS-ed samples were polished, then examined by an optical microscope prior to mechanical testing; only the samples without surface defects were tested.…”

Section: Methodsmentioning

confidence: 99%

Bulks of Al-B-C obtained by reactively spark plasma sintering and impact properties by Split Hopkinson Pressure Bar

Vasylkiv

Borodianska

Demirskyi

et al. 2019

Sci Rep

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Mixtures of B4C, α-AlB12 and B powders were reactively spark plasma sintered at 1800 °C. Crystalline and amorphous boron powders were used. Samples were tested for their impact behavior by the Split Hopkinson Pressure Bar method. When the ratio R = B4C/α-AlB12 ≥ 1.3 for a constant B-amount, the major phase in the samples was the orthorhombic AlB24C4, and when R < 1 the amount of AlB24C4 significantly decreased. Predictions that AlB24C4 has the best mechanical impact properties since it is the most compact and close to the ideal cubic packing among the Al-B-C phases containing B12-type icosahedra were partially confirmed. Namely, the highest values of the Vickers hardness (32.4 GPa), dynamic strength (1323 MPa), strain and toughness were determined for the samples with R = 1.3, i.e., for the samples with a high amount of AlB24C4. However, the existence of a maximum, detectable especially in the dynamic strength vs. R, indicated the additional influence of the phases and the composite’s microstructure in the samples. The type of boron does not influence the dependencies of the indicated mechanical parameters with R, but the curves are shifted to slightly higher values for the samples in which amorphous boron was used.

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Section: Methodsmentioning

confidence: 99%

Bulks of Al-B-C obtained by reactively spark plasma sintering and impact properties by Split Hopkinson Pressure Bar

Vasylkiv

Borodianska

Demirskyi

et al. 2019

Sci Rep

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“…The material properties including degradation behaviour by damage evolution k are determined by the manufacturing process. Toughening process to lowering k can improve the penetration resistance; but toughening often sacrifices other material properties [45][46][47], e.g., reducing dynamic compressive strength of ceramics which can conversely decrease the penetration resistance (Fig. 5).…”

Section: Selection Of Ceramic Targets For Penetration Resistancementioning

confidence: 99%

A model incorporating damage evolution to predict the penetration behavior of a ceramic target subjected to the long projectile impact

Wang

2020

International Journal of Impact Engineering

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“…To develop new armour materials or designing real armour systems, there are some speci c tests to understand the dynamic behavior of material e.g. Split-Hopkinson pressure bar test, Taylor test, yer plate test [11,16]. Drop weight impact test (DWT) that is given in dynamic low regime range (5 s − 1 -10 3 s − 1 ) is a very common method because of its versatility in imitating the impact behavior of structures.…”

Section: Introductionmentioning

confidence: 99%

Low velocity drop weight impact behavior of Al2O3-Ni-ZrO2 and Al2O3-Ni-Cr2O3 nanocomposite systems

Yıldız¹,

Buyuk

Tür

2021

Preprint

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1 vol% Ni particulate Al2O3 matrix nanocomposites prepared by the heterogeneous precipitation method with ZrO2 (5 vol%) or Cr2O3 (1 vol%) additives were subjected to the low energy drop weight impact tests to compare the behavior of the compositions under low energy impact and to investigate the damage mechanisms. The pure Al2O3, Al2O3/Ni, Al2O3/ZrO2, and Al2O3/Cr2O3 compositions with the same additive ratios were also produced to make the comparison systematically. Also, the Vickers hardness measurements were carried out and a significant increase in hardness was attained for both Al2O3/Ni + ZrO2 and Al2O3/Ni + Cr2O3. The average hardness value around 24.8 ± 1.0 GPa was measured for Al2O3/Ni + ZrO2 and Al2O3/Ni + Cr2O3 which means ∼ 15% improvement compared to the pure Al2O3. Between all the compositions, the maximum force (Fmax) value was obtained for Al2O3/Ni + ZrO2 for 12 J impact energy level (26617 N) according to the low energy drop weight impact test results. Tensile radial crack network formation, cone formation, fracture and crushing of the cone structure were observed as damage mechanisms for all the compositions. The volume of conical frustum structure was evaluated for each composition and the effect of microstructure on possible ballistic performance was also discussed.

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Compressive properties of pristine and SiC-Te-added MgB 2 powders, green compacts and spark-plasma-sintered bulks

Cited by 19 publications

References 54 publications

Bulks of Al-B-C obtained by reactively spark plasma sintering and impact properties by Split Hopkinson Pressure Bar

Bulks of Al-B-C obtained by reactively spark plasma sintering and impact properties by Split Hopkinson Pressure Bar

A model incorporating damage evolution to predict the penetration behavior of a ceramic target subjected to the long projectile impact

Low velocity drop weight impact behavior of Al2O3-Ni-ZrO2 and Al2O3-Ni-Cr2O3 nanocomposite systems

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