Publication detail

Crack healing behaviour of Al2O3/SiC nanocomposite ceramicS

FLAŠAR, P. DLOUHÝ, I. CHLUP, Z.

Original Title

Crack healing behaviour of Al2O3/SiC nanocomposite ceramicS

Type

conference paper

Language

English

Original Abstract

Indentation strength and self-crack-healing ability were systematically studied using beams containing a semi-elliptical surface crack made by Vickers indentor. Beams of Al2O3/SiC ceramic nanocomposite with a good self-crack-healing ability predetermined for four-point and three-point bending test were prepared by ceramographics techniques. Flexural strength and fracture toughness were determined using three- and four-point bend method. Thermal aging at 1573 K for 1h was applied to heal the samples with indentation pre-cracking. 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 microcracks having length up to 250 um and depth no higher than 100 um.

Keywords

Al2O3/SiC, alumina based nanocomposite, self-crack-healing, flexural strength, fracture toughness, Vickers indentation

Authors

FLAŠAR, P.; DLOUHÝ, I.; CHLUP, Z.

RIV year

2006

Released

18. 8. 2006

Publisher

VŠB Ostrava

Location

Ostrava

Pages from

215

Pages to

222

Pages count

7

BibTex

@inproceedings{BUT21818,
  author="Petr {Flašar} and Ivo {Dlouhý} and Zdeněk {Chlup}",
  title="Crack healing behaviour of Al2O3/SiC nanocomposite ceramicS",
  booktitle="New methods of demage and failure analysis of structural parts",
  year="2006",
  pages="215--222",
  publisher="VŠB Ostrava",
  address="Ostrava"
}