Publication detail

Higher fracture toughness of tetragonal zirconia ceramics through nanocrystalline structure

TRUNEC, M. CHLUP, Z.

Czech title

Vyšší lomová houževnatost keramiky z tetragonálního oxidu zirkoničitého pomocí nanokrystalické struktury

English title

Higher fracture toughness of tetragonal zirconia ceramics through nanocrystalline structure

Type

journal article in Web of Science

Language

en

Original abstract

Fracture toughness of nanocrystalline zirconia ceramic stabilized with 1.5 mol.% Y2O3 was measured and compared with fracture toughness of submicrometer-grained zirconia ceramics stabilized with 3 mol.% Y2O3. It was found that nanocrystalline ceramics demonstrated higher fracture toughness than submicrometer-grained zirconia ceramics with both optimized and common grain sizes. The high fracture toughness of nanocrystalline zirconia was confirmed by two different testing methods: indentation method (15.5 MPa m0.5) and chevron notched beam method (7.9 MPa m0.5).

Czech abstract

Byla změřena lomová houževnatost nanokrystalické keramiky z oxidu zirkoničitého stabilizovaného pomocí 1.5 mol.% Y2O3 a srovnána s lomovou houževnatostí keramiky s submikrometrovými zrny z oxidu zirkoničitého stabilizovaného pomocí 3 mol.% Y2O3. Bylo zjištěno, že nanokrystalická keramika vykazovala vyšší lomovou houževnatost než keramika s submikrometrovýni zrny, a to jak s optimalizovanou, tak i běžnou velikostí submikrometrových zrn. Vyšší lomová houževnatost nanokrystické keramiky z oxidu zirkoničitého byla potvrzena pomocí dvou různých testovacích metod: indentační metodou (15.5 MPa m0.5) a metodou "chevron notched beam" (7.9 MPa m0.5).

English abstract

Fracture toughness of nanocrystalline zirconia ceramic stabilized with 1.5 mol.% Y2O3 was measured and compared with fracture toughness of submicrometer-grained zirconia ceramics stabilized with 3 mol.% Y2O3. It was found that nanocrystalline ceramics demonstrated higher fracture toughness than submicrometer-grained zirconia ceramics with both optimized and common grain sizes. The high fracture toughness of nanocrystalline zirconia was confirmed by two different testing methods: indentation method (15.5 MPa m0.5) and chevron notched beam method (7.9 MPa m0.5).

Keywords in Czech

Oxid zirkoničitý, nanokrystalické materiály, hrubnutí, houževnatost, martenzitická fázová přeměna

Keywords in English

Zirconia; Nanocrystalline materials; Coarsening; Toughness; Martensitic phase transformation

RIV year

2009

Released

01.01.2009

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

ISSN

1359-6462

Journal

SCRIPTA MATERIALIA

Volume

61

Number

1

Pages from–to

56–59

Pages count

4

BIBTEX


@article{BUT48843,
  author="Martin {Trunec} and Zdeněk {Chlup},
  title="Higher fracture toughness of tetragonal zirconia ceramics through nanocrystalline structure",
  journal="SCRIPTA MATERIALIA",
  year="2009",
  volume="61",
  number="1",
  month="January",
  pages="56--59",
  publisher="PERGAMON-ELSEVIER SCIENCE LTD",
  address="THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND",
  issn="1359-6462"
}