Published June 1, 2012 | Version v1
Journal article Metadata-only

Toughening and reinforcing zirconia ceramics by introducing boron nitride nanotubes

Creators

  • 1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, 17923 Jingshi Road, Jinan 250061 (China)
  • 2. School of Mechanical Engineering, University of Jinan, Jinan 250022 (China)

Description

Highlights: ► BNNT-toughened ZrO2 ceramics were fabricated by hot-press sintering. ► BNNTs/ZrO2 composites exhibit enhanced fracture toughness and flexural strength. ► The enhancement is due to the synergetic toughening of BNNT and transition. - Abstract: Boron nitride nanotube (BNNT)-toughened ZrO2 ceramics were fabricated by hot-press sintering. Compared with monolithic ZrO2 ceramic, the addition of 1.0 wt% BNNT could result in an increase of flexural strength from 895.5 MPa to 1143.3 MPa and fracture toughness from 7.94 MPa m1/2 to 13.13 MPa m1/2. The incorporation of BNNTs could not only strengthen grain boundaries but boost BNNT-induced phase transformation. The breakage of BNNTs could also dissipate some fracture energy, giving rise to the enhanced mechanical properties.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.msea.2012.03.077

Additional details

Identifiers

DOI
10.1016/j.msea.2012.03.077;
PII
S0921-5093(12)00447-9;

Publishing Information

Journal Title
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Journal Volume
546
Journal Page Range
p. 301-306
ISSN
0921-5093
CODEN
MSAPE3

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44021277
Subject category
S36: MATERIALS SCIENCE; S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
BORON NITRIDES; CERAMICS; FLEXURAL STRENGTH; FRACTURE PROPERTIES; FRACTURES; GRAIN BOUNDARIES; HOT PRESSING; NANOTUBES; PHASE TRANSFORMATIONS; REINFORCED MATERIALS; SINTERING; ZIRCONIUM OXIDES
Descriptors DEC
BORON COMPOUNDS; CHALCOGENIDES; FABRICATION; FAILURES; MATERIALS; MATERIALS WORKING; MECHANICAL PROPERTIES; MICROSTRUCTURE; NANOSTRUCTURES; NITRIDES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PNICTIDES; PRESSING; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS

Optional Information

Copyright
Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.