Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces

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

Research output: Contribution to journalArticle

Abstract

Boron nitride nanotubes (BNNTs) are a unique class of light and strong tubular nanostructure and are highly promising as reinforcing additives in ceramic materials. However, the mechanical strength of BNNT-ceramic interfaces remains largely unexplored. Here we report the first direct measurement of the interfacial strength by pulling out individual BNNTs from silica (silicon dioxide) matrices using in situ electron microscopy techniques. Our nanomechanical measurements show that the average interfacial shear stress reaches about 34.7 MPa, while density functional theory calculations reveal strong bonded interactions between BN and silica lattices with a binding energy of -6.98 eV nm-2. Despite this strong BNNT-silica binding, nanotube pull-out remains the dominant failure mode without noticeable silica matrix residues on the pulled-out tube surface. The fracture toughness of BNNT-silica ceramic matrix nanocomposite is evaluated based on the measured interfacial strength property, and substantial fracture toughness enhancements are demonstrated at small filler concentrations.

Original languageEnglish (US)
Article number025706
JournalNanotechnology
Volume30
Issue number2
DOIs
StatePublished - Jan 11 2019

Fingerprint

Boron nitride
Silicon Dioxide
Nanotubes
Silica
Fracture toughness
Ceramic materials
Binding energy
Failure modes
Electron microscopy
Strength of materials
Density functional theory
boron nitride
Fillers
Shear stress
Nanostructures
Nanocomposites

Keywords

  • boron nitride nanotubes
  • ceramic matrix nanocomposites
  • fracture toughness
  • nanotube-ceramic interface
  • pull-out experiments

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Yi, C., Bagchi, S., Gou, F., Dmuchowski, C. M., Park, C., Fay, C. C., ... Ke, C. (2019). Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces. Nanotechnology, 30(2), [025706]. https://doi.org/10.1088/1361-6528/aae874

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.

In: Nanotechnology, Vol. 30, No. 2, 025706, 11.01.2019.

Research output: Contribution to journalArticle

Yi, C, Bagchi, S, Gou, F, Dmuchowski, CM, Park, C, Fay, CC, Chew, HB & Ke, C 2019, 'Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces' Nanotechnology, vol. 30, no. 2, 025706. https://doi.org/10.1088/1361-6528/aae874
Yi C, Bagchi S, Gou F, Dmuchowski CM, Park C, Fay CC et al. Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces. Nanotechnology. 2019 Jan 11;30(2). 025706. https://doi.org/10.1088/1361-6528/aae874
Yi, Chenglin ; Bagchi, Soumendu ; Gou, Feilin ; Dmuchowski, Christopher M. ; Park, Cheol ; Fay, Catharine C. ; Chew, Huck Beng ; Ke, Changhong. / Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces. In: Nanotechnology. 2019 ; Vol. 30, No. 2.
@article{f68240b79c52408095119130a6b1e622,
title = "Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces",
abstract = "Boron nitride nanotubes (BNNTs) are a unique class of light and strong tubular nanostructure and are highly promising as reinforcing additives in ceramic materials. However, the mechanical strength of BNNT-ceramic interfaces remains largely unexplored. Here we report the first direct measurement of the interfacial strength by pulling out individual BNNTs from silica (silicon dioxide) matrices using in situ electron microscopy techniques. Our nanomechanical measurements show that the average interfacial shear stress reaches about 34.7 MPa, while density functional theory calculations reveal strong bonded interactions between BN and silica lattices with a binding energy of -6.98 eV nm-2. Despite this strong BNNT-silica binding, nanotube pull-out remains the dominant failure mode without noticeable silica matrix residues on the pulled-out tube surface. The fracture toughness of BNNT-silica ceramic matrix nanocomposite is evaluated based on the measured interfacial strength property, and substantial fracture toughness enhancements are demonstrated at small filler concentrations.",
keywords = "boron nitride nanotubes, ceramic matrix nanocomposites, fracture toughness, nanotube-ceramic interface, pull-out experiments",
author = "Chenglin Yi and Soumendu Bagchi and Feilin Gou and Dmuchowski, {Christopher M.} and Cheol Park and Fay, {Catharine C.} and Chew, {Huck Beng} and Changhong Ke",
year = "2019",
month = "1",
day = "11",
doi = "10.1088/1361-6528/aae874",
language = "English (US)",
volume = "30",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - Direct nanomechanical measurements of boron nitride nanotube - Ceramic interfaces

AU - Yi, Chenglin

AU - Bagchi, Soumendu

AU - Gou, Feilin

AU - Dmuchowski, Christopher M.

AU - Park, Cheol

AU - Fay, Catharine C.

AU - Chew, Huck Beng

AU - Ke, Changhong

PY - 2019/1/11

Y1 - 2019/1/11

N2 - Boron nitride nanotubes (BNNTs) are a unique class of light and strong tubular nanostructure and are highly promising as reinforcing additives in ceramic materials. However, the mechanical strength of BNNT-ceramic interfaces remains largely unexplored. Here we report the first direct measurement of the interfacial strength by pulling out individual BNNTs from silica (silicon dioxide) matrices using in situ electron microscopy techniques. Our nanomechanical measurements show that the average interfacial shear stress reaches about 34.7 MPa, while density functional theory calculations reveal strong bonded interactions between BN and silica lattices with a binding energy of -6.98 eV nm-2. Despite this strong BNNT-silica binding, nanotube pull-out remains the dominant failure mode without noticeable silica matrix residues on the pulled-out tube surface. The fracture toughness of BNNT-silica ceramic matrix nanocomposite is evaluated based on the measured interfacial strength property, and substantial fracture toughness enhancements are demonstrated at small filler concentrations.

AB - Boron nitride nanotubes (BNNTs) are a unique class of light and strong tubular nanostructure and are highly promising as reinforcing additives in ceramic materials. However, the mechanical strength of BNNT-ceramic interfaces remains largely unexplored. Here we report the first direct measurement of the interfacial strength by pulling out individual BNNTs from silica (silicon dioxide) matrices using in situ electron microscopy techniques. Our nanomechanical measurements show that the average interfacial shear stress reaches about 34.7 MPa, while density functional theory calculations reveal strong bonded interactions between BN and silica lattices with a binding energy of -6.98 eV nm-2. Despite this strong BNNT-silica binding, nanotube pull-out remains the dominant failure mode without noticeable silica matrix residues on the pulled-out tube surface. The fracture toughness of BNNT-silica ceramic matrix nanocomposite is evaluated based on the measured interfacial strength property, and substantial fracture toughness enhancements are demonstrated at small filler concentrations.

KW - boron nitride nanotubes

KW - ceramic matrix nanocomposites

KW - fracture toughness

KW - nanotube-ceramic interface

KW - pull-out experiments

UR - http://www.scopus.com/inward/record.url?scp=85056422161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85056422161&partnerID=8YFLogxK

U2 - 10.1088/1361-6528/aae874

DO - 10.1088/1361-6528/aae874

M3 - Article

VL - 30

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 2

M1 - 025706

ER -