Preparation and mechanical properties of boron nitride nanosheets/alumina composites

Weili Wang; Guoxun Sun; Yafei Chen; Xiaoning Sun; Jianqiang Bi

doi:10.1016/j.ceramint.2018.08.314

Preparation and mechanical properties of boron nitride nanosheets/alumina composites

Weili Wang^*
, Guoxun Sun
, Yafei Chen
, Xiaoning Sun
, Jianqiang Bi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Boron nitride nanosheets (BNNSs) have attracted increasing attention in the field of two-dimensional materials. In the paper, the BNNSs/alumina composites were fabricated by a flocculation method and hot pressing. It is found that the BNNSs were dispersed uniformly in the alumina matrix by the flocculation technique via pH adjustment. The experimental results showed that with the increasing BNNSs content, the density of the composites decreased. Compared with the monolithic alumina, bending strength of the composite with 1.0 wt% BNNSs was increased by 58.6%; while the fracture toughness was increased slightly. The addition of BNNSs changed the fracture pattern, refined the grains of composites and inhibited abnormal grain growth, which contributed to the improvement of mechanical properties of the composites.

Original language	English
Pages (from-to)	21993-21997
Number of pages	5
Journal	Ceramics International
Volume	44
Issue number	17
DOIs	https://doi.org/10.1016/j.ceramint.2018.08.314
State	Published - 1 Dec 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.

Keywords

Alumina
Boron nitride nanosheets
Dispersion
Flocculation
Mechanical properties

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2018.08.314

Cite this

@article{034b42b5324342378fe3f1ba13b3ea00,

title = "Preparation and mechanical properties of boron nitride nanosheets/alumina composites",

abstract = "Boron nitride nanosheets (BNNSs) have attracted increasing attention in the field of two-dimensional materials. In the paper, the BNNSs/alumina composites were fabricated by a flocculation method and hot pressing. It is found that the BNNSs were dispersed uniformly in the alumina matrix by the flocculation technique via pH adjustment. The experimental results showed that with the increasing BNNSs content, the density of the composites decreased. Compared with the monolithic alumina, bending strength of the composite with 1.0 wt\% BNNSs was increased by 58.6\%; while the fracture toughness was increased slightly. The addition of BNNSs changed the fracture pattern, refined the grains of composites and inhibited abnormal grain growth, which contributed to the improvement of mechanical properties of the composites.",

keywords = "Alumina, Boron nitride nanosheets, Dispersion, Flocculation, Mechanical properties",

author = "Weili Wang and Guoxun Sun and Yafei Chen and Xiaoning Sun and Jianqiang Bi",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2018",

month = dec,

day = "1",

doi = "10.1016/j.ceramint.2018.08.314",

language = "English",

volume = "44",

pages = "21993--21997",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

number = "17",

}

TY - JOUR

T1 - Preparation and mechanical properties of boron nitride nanosheets/alumina composites

AU - Wang, Weili

AU - Sun, Guoxun

AU - Chen, Yafei

AU - Sun, Xiaoning

AU - Bi, Jianqiang

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Boron nitride nanosheets (BNNSs) have attracted increasing attention in the field of two-dimensional materials. In the paper, the BNNSs/alumina composites were fabricated by a flocculation method and hot pressing. It is found that the BNNSs were dispersed uniformly in the alumina matrix by the flocculation technique via pH adjustment. The experimental results showed that with the increasing BNNSs content, the density of the composites decreased. Compared with the monolithic alumina, bending strength of the composite with 1.0 wt% BNNSs was increased by 58.6%; while the fracture toughness was increased slightly. The addition of BNNSs changed the fracture pattern, refined the grains of composites and inhibited abnormal grain growth, which contributed to the improvement of mechanical properties of the composites.

AB - Boron nitride nanosheets (BNNSs) have attracted increasing attention in the field of two-dimensional materials. In the paper, the BNNSs/alumina composites were fabricated by a flocculation method and hot pressing. It is found that the BNNSs were dispersed uniformly in the alumina matrix by the flocculation technique via pH adjustment. The experimental results showed that with the increasing BNNSs content, the density of the composites decreased. Compared with the monolithic alumina, bending strength of the composite with 1.0 wt% BNNSs was increased by 58.6%; while the fracture toughness was increased slightly. The addition of BNNSs changed the fracture pattern, refined the grains of composites and inhibited abnormal grain growth, which contributed to the improvement of mechanical properties of the composites.

KW - Alumina

KW - Boron nitride nanosheets

KW - Dispersion

KW - Flocculation

KW - Mechanical properties

UR - https://www.scopus.com/pages/publications/85052727051

U2 - 10.1016/j.ceramint.2018.08.314

DO - 10.1016/j.ceramint.2018.08.314

M3 - Article

AN - SCOPUS:85052727051

SN - 0272-8842

VL - 44

SP - 21993

EP - 21997

JO - Ceramics International

JF - Ceramics International

IS - 17

ER -

Preparation and mechanical properties of boron nitride nanosheets/alumina composites

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this