Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Spark-plasma sintering of ZrB2 ultra-high-temperature ceramics at lower temperature via nanoscale crystal refinement
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Number of Authors: 42012 (English)In: Journal of the European Ceramic Society, ISSN 0955-2219, E-ISSN 1873-619X, Vol. 32, no 10, p. 2529-2536Article in journal (Refereed) Published
Abstract [en]

We have explored the feasibility of reducing the spark-plasma-sintering (SPS) temperature of additive-free ZrB2 ultra-high-temperature ceramics (UHTCs) via crystal size refinement of the starting powder down to the low nanoscale. We found that under otherwise the same SPS conditions (75 MPa pressure, and 100 degrees C/min heating ramp) nanoscale ZrB2 can be densified at temperatures about 450 degrees C lower than for the typical micrometre and submicrometre ZrB2 powders, and at least 250 degrees C below the ultra-fine powder temperature. Furthermore, the nanoscale crystal refinement also promotes the production of fine-grained ZrB2 UHTCs. We also found that elimination of the B2O3 impurities plays an important role in the complete densification. The unequalled sinterability of the nanoscale ZrB2 powders highlights the need to use high-energy ball-milling for the comminution of the typical commercially available ZrB2 powders.

Place, publisher, year, edition, pages
2012. Vol. 32, no 10, p. 2529-2536
Keywords [en]
ZrB2, Ultra-high-temperature ceramics, Sintering, High-energy ball-milling
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:su:diva-162401DOI: 10.1016/j.jeurceramsoc.2012.02.023ISI: 000304782600055OAI: oai:DiVA.org:su-162401DiVA, id: diva2:1287716
Available from: 2019-02-11 Created: 2019-02-11 Last updated: 2019-02-11Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Ortiz, Angel L.
By organisation
Department of Materials and Environmental Chemistry (MMK)
In the same journal
Journal of the European Ceramic Society
Materials Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf