Direct nanomechanical measurements of boron nitride nanotube—ceramic interfaces

Yi, Chenglin; Bagchi, Soumendu; Gou, Feilin; Dmuchowski, Christopher M.; Park, Cheol; Fay, Catharine C.; Chew, Huck Beng; Ke, Changhong

doi:10.1088/1361-6528/aae874

Cited by 16 publications

(12 citation statements)

References 54 publications

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“…For instance, BNNTs was shown to reinforce polymer, silica and metallic matrices. [156][157][158][159] In the case, of polymeric nanocomposites, BNNTs have shown effective improvement of the elastic modulus (increasing by ∼20 %) of polystyrene and polymethyl methacrylate (PMMA) by adding only 1 wt.% of BNNTs. Furthermore, shear strengths of BNNT-epoxy and BNNT-PMMA interfaces of 323 and 219 MPa were reported.…”

Section: Tribological Characterizationmentioning

confidence: 99%

An overview of the recent advances in inorganic nanotubes

2019

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Section: Tribological Characterizationmentioning

confidence: 99%

An overview of the recent advances in inorganic nanotubes

2019

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“…With 1.5 vol% of BNNTs, spark plasma sintered BNNT/α-Al 2 O 3 composite was observed to reduce grain size by 50%, and microhardness increased by 22% [31]. A recent comparative study comparing the interfacial strength properties of BNNT/silica and CNT/silica ceramic matrix composite measured ∼55% higher interfacial shear strength for BNNT/silica than for CNT/silica [32,33]. Along with mechanical enhancements, BNNTs create a high-temperature thermally conductive network and increase thermal conductivity with preserved electrical insulating properties of ceramic matrices [34].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of stereolithographic 3D printed boron nitride nanotube-reinforced ceramic composites with improved thermal and mechanical performance

Tank¹,

Leon²,

Huang³

et al. 2023

Funct. Compos. Struct.

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Boron nitride nanotubes (BNNTs) are the perfect candidate for nanofillers in high-temperature multifunctional ceramics due to their high thermal stability, oxidation resistance, good mechanical properties, high thermal conductivity, and radiation shielding. In this paper, 3D printed ceramic nanocomposite with 0.1 wt% of BNNT was prepared by fusing it at high temperatures. Samples were built with three different print directions to study the effect of print layers on mechanical performance along with BNNT addition. Dynamic mechanical analysis is performed to study the length effect of nanoscale reinforcements on the mechanical properties of the printed ceramic composites reporting significant improvements up to 55% in bending strength and 72% in bending modulus with just 0.1 wt% BNNT addition. A 63% thermal diffusivity improvement of ceramic by adding BNNTs is observed using laser flash analysis. The bridging and pull-out effect of nanotubes with a longer aspect ratio was observed with high-resolution microscopy. Such composites' modeling and simulation approaches are crucial for virtual testing and industrial applications. Understanding the effect of nanoscale synthetic fillers for 3D printed high-temperature ceramics can revolutionize future extreme environment structures.

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“…As carbon exists in two forms of graphite and diamond, it is possible that BN becomes synthesized in hexagonal and cubic forms [4]. According to neat hightemperature stability of BN [5], it could utilize to fabricate ceramic parts [6], coatings [7], or lubricants [8]. It should be noted that the hexagonal form of BN ("h-BN" or "α_BN") is analogous to a hexagonal form of graphite because it crystallizes in a hexagonal layered structure; however, it is sometimes called "g-BN" derived from graphitic BN.…”

Section: Introductionmentioning

confidence: 99%

A mini-review on dispersion and functionalization of boron nitride nanotubes

Foroutan

Fatemi

2019

J Nanostruct Chem

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Boron nitride nanotubes (BNNTs) are of intense scientific interest due to their unrivaled physicochemical characteristics, extraordinary thermal, electronic, mechanical, optical properties and prospective applications in various nanotechnologies. Therefore, they are particular candidates for the development of new materials potentially applied in abundant applications. However, obtaining homogenous composite materials requires a good dispersion of BNNTs, as well in solvents or in the matrix, which still has remained challenging. The preparation of effective dispersions of BNNTs presents a major impediment to the extension and utilization of BNNTs. BNNTs intrinsically tend to bundle and/or aggregate. The prevention of such behavior has been explored by testing various techniques to improve the dispersibility of BNNTs in a variety of solvents. There are mainly two approaches to obtain a good quality dispersion; chemical functionalization and physical interactions. The chemical functionalization technique has been found effective, but deteriorates the intrinsic properties of BNNTs through the introduction of defects on the wall. Physical blending approaches with the ultrasound and high-speed shearing have been proven capable of debundling BNNTs and stabilizing individual BNNTs while maintaining their integrity and intrinsic properties. Attention has been brought to the study of the dispersion of BNNTs in aqueous media and most attention is paid to molecular dynamics simulation techniques and other physical techniques, as well as to the use of various surfactants and polymers.

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Direct nanomechanical measurements of boron nitride nanotube—ceramic interfaces

Cited by 16 publications

References 54 publications

An overview of the recent advances in inorganic nanotubes

An overview of the recent advances in inorganic nanotubes

Manufacturing of stereolithographic 3D printed boron nitride nanotube-reinforced ceramic composites with improved thermal and mechanical performance

A mini-review on dispersion and functionalization of boron nitride nanotubes

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