Insight into reactions and interface between boron nitride nanotube and aluminum

Lahiri, Debrupa; Singh, Virendra; Li, Lu Hua; Tan, Xuezhi; Seal, Sudipta; Chen, Ying; Agarwal, Arvind

doi:10.1557/jmr.2012.294

Cited by 53 publications

(38 citation statements)

References 58 publications

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“…8). Thus the present results support the conclusion of Lahiri et al [30] who found that the rate of new phase formation at the Al/BNNT interface is very slow. The observed reaction products suggest the formation of strong bonds between the Al matrix and reinforcing BNNPs.…”

Section: Microstructuresupporting

confidence: 93%

“…In this regard it can be pointed out that the formation of both AlN and AlB 2 phases was only observed during exposure at a slightly higher temperature than the sintering temperature of 600 o C utilized by us, i.e. near the melting point of Al (650 o C) for 60 min, but the thickness of reaction-product layer was very small, about 1.5 nm [30].…”

Section: Microstructurementioning

confidence: 60%

“…The specimens for the damping tests were cut as rectangular bars of 30 mm in length and 1.5×5 mm 2 in cross-section. influence of the isothermal holding on mechanical properties was previously reported [30]. It was shown that a strong chemical bonding between Al matrix and reinforcing BNNTs could only be achieved after holding at 600 o C for 60 min.…”

Section: Damping Propertiesmentioning

confidence: 67%

“…(1) 3Al+2BN=2AlN+AlB 2 This reaction was shown to be thermodynamically feasible [30] and may result in the formation of a strong interface bonding with high critical shear stress values (up to 450 MPa) [22].…”

Section: Microstructurementioning

confidence: 99%

See 3 more Smart Citations

Fabrication, characterization, and mechanical properties of spark plasma sintered Al–BN nanoparticle composites

Firestein

Steinman

Golovin

et al. 2015

Materials Science and Engineering: A

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Section: Microstructuresupporting

confidence: 93%

Section: Microstructurementioning

confidence: 60%

Section: Damping Propertiesmentioning

confidence: 67%

Section: Microstructurementioning

confidence: 99%

See 2 more Smart Citations

Fabrication, characterization, and mechanical properties of spark plasma sintered Al–BN nanoparticle composites

Firestein

Steinman

Golovin

et al. 2015

Materials Science and Engineering: A

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“…[11][12][13][14][15][16][17][18] Spark plasma sintering (SPS) is one of the popular consolidation techniques, and is desirable since it involves lower sintering temperature and soaking times as compared to conventional sintering techniques. [11][12][13][14][15][16][17][18] Spark plasma sintering (SPS) is one of the popular consolidation techniques, and is desirable since it involves lower sintering temperature and soaking times as compared to conventional sintering techniques.…”

Section: Introductionmentioning

confidence: 99%

Directionally Aligned Ultra‐Long Boron Nitride Nanotube Induced Strengthening of Aluminum‐Based Sandwich Composite

et al. 2016

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Ultra-long Boron Nitride Nanotubes (100-200 mm) based layered Al-BNNT-Al composites are fabricated by spark plasma sintering, followed by cold rolling. The BNNT mat is sputter coated with Al to engineer strong metal-nanotube interface. The BNNTs exhibit perfect alignment along the cold rolling direction. The tensile strength of the composite is found to be 200 MPa, which is 400% greater than the strength of pure Al (%40 MPa). Young's modulus of this sandwich composite (%134 GPa) is found to be double the modulus of pure Al (%70 GPa) (with standard deviations less than 10%). Strengthening is explained by three major mechanisms: superior load transfer for long BNNT reinforcement, improvement in matrix-nanotube bonding due to trace amount of interfacial product formation, and crack bridging by directionally aligned long nanotubes.

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Strengthening in Boron Nitride Nanotube Reinforced Aluminum Composites Prepared by Roll Bonding

et al. 2018

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Boron Nitride Nanotube (BNNT) is a promising reinforcement for developing strong and lightweight metal matrix composites due to its brilliant mechanical properties and excellent high-temperature oxidation resistance. In this study, layered composites of aluminum and BNNT are fabricated by a multistep process comprising of hot pressing, rolling, and annealing. Less than 0.1 wt% of ultra-long nanotubes (up to 200 μm in length) are used to induce superior strengthening. For achieving enhanced mechanical properties, nanotubes are de-agglomerated and chemically dispersed in an aqueous solution before introducing between the layers of aluminum sheets. Application of pressure (up to 10 MPa) and temperatures (up to 300 C) during rolling and hot pressing induces a bonding between aluminum sheets and nanotubes. Scanning electron microscopy reveals that the nanotubes survive these conditions, suggesting superior thermal and mechanical endurance of BNNT. The nanohardness and elastic modulus of the composites are found to improve by 52% and 17%, respectively, by merely 0.045 wt% BNNT addition. BNNT reinforced composites exhibit up to 13% improvement in ultimate tensile strength. The improvement in mechanical properties is ascribed to effective load transfer from the aluminum matrix to the long nanotubes via interfacial shear stress and enhancement of dislocation density.

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Insight into reactions and interface between boron nitride nanotube and aluminum

Abstract: Abstract

Cited by 53 publications

References 58 publications

Fabrication, characterization, and mechanical properties of spark plasma sintered Al–BN nanoparticle composites

Fabrication, characterization, and mechanical properties of spark plasma sintered Al–BN nanoparticle composites

Directionally Aligned Ultra‐Long Boron Nitride Nanotube Induced Strengthening of Aluminum‐Based Sandwich Composite

Strengthening in Boron Nitride Nanotube Reinforced Aluminum Composites Prepared by Roll Bonding

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