Publication detail

Fracture behaviour of Al2O3/SiC nanocomposite ceramics after crack healing treatment

CHLUP, Z. FLAŠAR, P. KOTOJI, A. DLOUHÝ, I.

Original Title

Fracture behaviour of Al2O3/SiC nanocomposite ceramics after crack healing treatment

English Title

Fracture behaviour of Al2O3/SiC nanocomposite ceramics after crack healing treatment

Type

journal article - other

Language

en

Original Abstract

The self-crack-healing ability was systematically studied using flexural strength measurement of beams containing a semi-elliptical surface crack made by Vickers indenter. Beams of Al2O3/SiC ceramic nanocomposite with a good self-crack-healing ability predetermined for four-point and three-point bend test were prepared by ceramographic techniques. Flexural strength and fracture toughness were determined using three- and four-point bend method. Thermal aging in range from 1000 .C up to 1300 .C for 1 h was applied to find optimal conditions to heal the samples pre-cracked by the indentation technique. Fractographical analyses using an optical and/or scanning electron microscopy has been carried out to investigate the surface crack behaviour. Very good self-crack healing ability has been proved for surface micro-cracks having length up to 250 um and depth no higher than 100 um.

English abstract

The self-crack-healing ability was systematically studied using flexural strength measurement of beams containing a semi-elliptical surface crack made by Vickers indenter. Beams of Al2O3/SiC ceramic nanocomposite with a good self-crack-healing ability predetermined for four-point and three-point bend test were prepared by ceramographic techniques. Flexural strength and fracture toughness were determined using three- and four-point bend method. Thermal aging in range from 1000 .C up to 1300 .C for 1 h was applied to find optimal conditions to heal the samples pre-cracked by the indentation technique. Fractographical analyses using an optical and/or scanning electron microscopy has been carried out to investigate the surface crack behaviour. Very good self-crack healing ability has been proved for surface micro-cracks having length up to 250 um and depth no higher than 100 um.

Keywords

Composites; Strength; Al2O3/SiC; Crack healing

RIV year

2008

Released

01.08.2008

Publisher

Elsevier

Location

GB

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

28

Number

5

State

GB

Pages from

1073

Pages to

1077

Pages count

5

Documents

BibTex


@article{BUT48135,
  author="Zdeněk {Chlup} and Petr {Flašar} and Ando {Kotoji} and Ivo {Dlouhý}",
  title="Fracture behaviour of Al2O3/SiC nanocomposite ceramics after crack healing treatment",
  annote="The self-crack-healing ability was systematically studied using flexural strength measurement of beams containing a semi-elliptical surface crack
made by Vickers indenter. Beams of Al2O3/SiC ceramic nanocomposite with a good self-crack-healing ability predetermined for four-point and
three-point bend test were prepared by ceramographic techniques. Flexural strength and fracture toughness were determined using three- and
four-point bend method. Thermal aging in range from 1000 .C up to 1300 .C for 1 h was applied to find optimal conditions to heal the samples
pre-cracked by the indentation technique. Fractographical analyses using an optical and/or scanning electron microscopy has been carried out to
investigate the surface crack behaviour. Very good self-crack healing ability has been proved for surface micro-cracks having length up to 250 um
and depth no higher than 100 um.",
  address="Elsevier",
  chapter="48135",
  institution="Elsevier",
  journal="Journal of the European Ceramic Society",
  number="5",
  volume="28",
  year="2008",
  month="august",
  pages="1073--1077",
  publisher="Elsevier",
  type="journal article - other"
}