Chemical composition and microstructure of Al3BC3 prepared by different densification methods

Lee, Sea Hoon; Kim, Hai Doo; Choi, Sung Churl; Nishimura, Toshiyuki; Lee, Jin Seok; Tanaka, Hidehiko

doi:10.1016/j.jeurceramsoc.2009.09.027

Cited by 22 publications

(9 citation statements)

References 30 publications

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“…The Al-B 4 C composites are used in bicycle frames, bullet proof vests, armor tanks, containment of nuclear waste, neutron absorbers in nuclear power plants, transportation applications, etc. owing to their high hardness, low density, and excellent thermal and chemical stability [ 9 , 10 ]. Recently, Al-B 4 C composites were prepared through different techniques: stir casting [ 11 ], squeeze casting [ 12 ], powder metallurgy method [ 13 ], spark plasma sintering [ 14 ], and microwave sintering [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

et al. 2017

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In this work, Al-B4C nanocomposites were produced by microwave sintering and followed by hot extrusion processes. The influence of ceramic reinforcement (B4C) nanoparticles on the physical, microstructural, mechanical, and thermal characteristics of the extruded Al-B4C nanocomposites was investigated. It was observed that the density decreased and porosity increased with an increase in B4C content in aluminum matrix. The porosity of the composites increased whereas density decreased with increasing B4C content. Electron microscopy analysis reveals the uniform distribution of B4C nanoparticles in the Al matrix. Mechanical characterization results revealed that hardness, elastic modulus, compression, and tensile strengths increased whereas ductility decreases with increasing B4C content. Al-1.0 vol. % B4C nanocomposite exhibited best hardness (135.56 Hv), Young’s modulus (88.63 GPa), and compression/tensile strength (524.67/194.41 MPa) among the materials investigated. Further, coefficient of thermal expansion (CTE) of composites gradually decreased with an increase in B4C content.

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Section: Introductionmentioning

confidence: 99%

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

et al. 2017

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“…In recent years, aluminum boron-carbide phases (such as Al 3 BC 3 , Al 8 B 4 C 7 , AlB 24 C 4 , etc.) in the Al–B–C system have become the topics of several current investigations since the composites reinforced by them possess excellent properties such as low density, high strength and high hardness. − Al 3 BC which was first described as phase X with a hexagonal crystal lattice ( a = 3.491(2) Å, c = 11.541(4) Å) , is another promising reinforcement owing to its low density (2.83 g/cm 3 ; close to that of Al), high hardness (14 GPa), excellent thermal stability (stable up to 1700 K under a high pressure of 1.6–4.8 GPa), and remarkable stiffness (Young’s modulus = 326 GPa) Table and Figure show our Density functional theory calculations of Al 3 BC structure.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Semicoherent Interface with Definite Orientation Relationships between Reinforcements and Matrix in Novel Al₃BC/Al Composites

Zhao

Qian

et al. 2016

ACS Appl. Mater. Interfaces

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High-strength lightweight Al-based composites are promising materials for a wide range of applications. To provide high performance, a strong bonding interface for effective load transfer from the matrix to the reinforcement is essential. In this work, the novel AlBC reinforced Al composites have been in situ fabricated through a liquid-solid reaction method and the bonding interface between AlBC and Al matrix has been unveiled. The HRTEM characterizations on the AlBC/Al interface verify it to be a semicoherent bonding structure with definite orientation relationships: (0001)//(11̅1);[112̅0]//[011]. Periodic arrays of geometrical misfit dislocations are also observed along the interface at each (0001) plane or every five (11̅1) planes. This kind of interface between the reinforcement and the matrix is strong enough for effective load transfer, which would lead to the evidently improved strength and stiffness of the introduced new AlBC/Al composites.

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“…The hardness of the sintered ZrB 2 ‐SiC‐Al 3 BC 3 composite in this study was 17.7 ± 0.8 GPa, which is lower than that of ZrB 2 (23 GPa) and SiC (22.9 GPa) . The main reason is that the hardness of Al 3 BC 3 is only 13.9 GPa . The flexural strength of the ZrB 2 composite was 589 ± 147 MPa, which is higher than that of monolithic ZrB 2 …”

Section: Resultsmentioning

confidence: 52%

Preparation and properties of dense ZrB₂ composite reinforced by elongated SiC and Al₃BC₃ grains

Chen

Zhao

Wang

et al. 2019

Int J Applied Ceramic Tech

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Dense ZrB2‐SiC‐Al3BC3 ultra‐high temperature ceramic composite was fabricated by hot pressing sintering at 1900°C for 1 hour under a pressure of 20 MPa using Zirconium diboride (ZrB2) as the raw material and a powder mixture of SiC, B4C, Al, and carbon as the sintering additive. Al and B4C underwent in situ reaction with carbon powder to produce Al3BC3, which promoted the densification of ZrB2 ceramic. SiC grains were found to be elongated during sintering. The ZrB2‐SiC‐Al3BC3 composite exhibited excellent mechanical properties, such as high flexural strength of 589 ± 147 MPa and fracture toughness of 7.81 ± 1.09 MPa m1/2. Oxidation behavior of the ZrB2‐SiC‐Al3BC3 composite was studied in air at 1500°C for 1 hour. A continuous layer of oxides consisting of a mixture of SiO2, Al2SiO5, and Al2O3 was formed on the surface of the ZrB2‐SiC‐Al3BC3 composite. This layer of oxides efficiently prevented oxygen from diffusing into the specimens during oxidation, which improved the oxidation resistance of the ZrB2 ceramics.

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Chemical composition and microstructure of Al3BC3 prepared by different densification methods

Cited by 22 publications

References 30 publications

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

Unveiling the Semicoherent Interface with Definite Orientation Relationships between Reinforcements and Matrix in Novel Al₃BC/Al Composites

Preparation and properties of dense ZrB₂ composite reinforced by elongated SiC and Al₃BC₃ grains

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Chemical composition and microstructure of Al3BC3 prepared by different densification methods

Cited by 22 publications

References 30 publications

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

Using B4C Nanoparticles to Enhance Thermal and Mechanical Response of Aluminum

Unveiling the Semicoherent Interface with Definite Orientation Relationships between Reinforcements and Matrix in Novel Al3BC/Al Composites

Preparation and properties of dense ZrB2 composite reinforced by elongated SiC and Al3BC3 grains

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Product

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Unveiling the Semicoherent Interface with Definite Orientation Relationships between Reinforcements and Matrix in Novel Al₃BC/Al Composites

Preparation and properties of dense ZrB₂ composite reinforced by elongated SiC and Al₃BC₃ grains