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Description:

Microstructure evolution in bulk hafnium diboride ceramics prepared by spark plasma sintering in flash regime was compared with conventional spark plasma sintering. The conventional and flash spark plasma sintering resulted in ceramics with a high relative density exceeding 96% of their theoretical density. A remarkably fine grain size distribution was noticed for the specimen prepared in the flash regime. This atypical microstructure evolution provides a possible insight into the mechanism of flash sintering for conductive bulks. The room temperature flexural strength of the hafnium diboride processed by flash SPS was 650 MPa which is 140 MPa higher than the sample produced by conventional SPS.

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• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

  © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/

Keyword: Hafnium diboride, Flash sintering, Flexural strength, High temperature materials

Date published: 2018-12-03

Publisher: Elsevier BV

Journal:

• Journal of the European Ceramic Society (ISSN: 09552219) vol. 39 issue. 4 p. 898-906

Funding:

• Thousand Talents Program of China and Sichuan Province
• World Premier International Research Center Initiative (WPI), MEXT, Japan

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4989

First published URL: https://doi.org/10.1016/j.jeurceramsoc.2018.12.012

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Updated at: 2024-11-19 16:30:37 +0900

Published on MDR: 2024-11-19 16:30:37 +0900