# Deformation‐resistant Ta            <sub>0.2</sub>            Hf            <sub>0.8</sub>            C solid‐solution ceramic with superior flexural strength at 2000°C

https://mdr.nims.go.jp/datasets/af4ccf11-25c0-48bf-afb0-2b014e92a269

## File

- [JACERS-47914.R1-Proof-hi.pdf](https://mdr.nims.go.jp/filesets/df2c4dee-3a97-46df-8c10-a6ee9f8a82cf/download) ([Detail](https://mdr.nims.go.jp/filesets/df2c4dee-3a97-46df-8c10-a6ee9f8a82cf.md))

## Id

af4ccf11-25c0-48bf-afb0-2b014e92a269

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-14T06:17:23.605586Z

## Updated at

2024-11-21T07:32:03.037786Z

## Published at

2024-11-21T07:32:03.166967Z

## Doi

https://doi.org/10.48505/nims.4973

## First published url

https://doi.org/10.1111/jace.18072

## Date published

2021-08-27

## Recorded date published

2022-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Deformation‐resistant Ta            <sub>0.2</sub>            Hf            <sub>0.8</sub>            C
    solid‐solution ceramic with superior flexural strength at 2000°C
  title_type: original
  lang: en

## Description

- description: "In this study, we explored the consolidation, solid-solution formation
    and high-temperature properties of tantalum hafnium carbide with the 1 TaC:4 HfC
    ratio, that is, Ta0.2Hf0.8C. Tantalum hafnium carbide bulks can be consolidated
    using spark-plasma sintering only at temperatures exceeding 2200°C. The bulks
    prepared using a 40-min dwell at 2200°C had the lattice parameter a = 4.571(9)
    Å. Based on the three-point\r\nflexural tests, it was observed that the toughness
    and strength of Ta0.2Hf0.8C remained high at 2000°C (3.4 ± 0.4 MPa m1/2, 500 ±
    20 MPa). At 2000°C, majority of carbides show a plastic behavior, but the strain-stress
    curves of the SPSed Ta0.2Hf0.8C ceramic were linear. Using the shrinkage rate
    data during the SPS and the strain-stress data from the high-temperature flexure,
    we estimated the activation energies for the densification and flexure as 820
    ± 20 kJ/mol and 1180 ± 120 kJ/mol, respectively."
  description_type: abstract
  lang: und

## Creator

- name: Dmytro Demirskyi
  role: author
  organization: National Institute for Materials Science
- name: Hanna Borodianska
  role: author
- name: Toshiyuki Nishimura
  role: author
  orcid: https://orcid.org/0000-0002-2185-2849
  organization: National Institute for Materials Science
- name: Tohru S. Suzuki
  role: author
  orcid: https://orcid.org/0000-0001-9458-6863
  organization: National Institute for Materials Science
- name: Kyosuke Yoshimi
  role: author
- name: Oleg Vasylkiv
  role: author
  orcid: https://orcid.org/0000-0002-5041-6130
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: strength
  schema: not_defined
- subject: ultra-high temperature ceramics
  schema: not_defined
- subject: Spark plasma sintering
  schema: not_defined
- subject: tantalum hafnium carbide
  schema: not_defined

## Rights

- description: 'This is the peer reviewed version of the following article: Demirskyi
    D, Borodianska H, Nishimura T, Suzuki TS, Yoshimi K, Vasylkiv O. Deformation-resistant
    Ta0.2Hf0.8C solid-solution ceramic with superior flexural strength at 2000°C.
    J Am Ceram Soc. 2021; 105: 512–524, which has been published in final form at
    https://doi.org/10.1111/jace.18072. This article may be used for non-commercial
    purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived
    Versions. This article may not be enhanced, enriched or otherwise transformed
    into a derivative work, without express permission from Wiley or by statutory
    rights under applicable legislation. Copyright notices must not be removed, obscured
    or modified. The article must be linked to Wiley’s version of record on Wiley
    Online Library and any embedding, framing or otherwise making available the article
    or pages thereof by third parties from platforms, services and websites other
    than Wiley Online Library must be prohibited.'
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2021-08-18
end_date: 2022-08-18

## Journal

- title: Journal of the American Ceramic Society
  issn: '15512916'
  volume: '105'
  issue: '1'
  start_page: 512
  end_page: 524

## Conference



## Related item



## Funding

- identifier: PA3030
  funder_name: NIMS
  description: "粉体・セラミックス\t結晶・界面の階層的構造制御による機能顕在化のための研究\t40"
- identifier: PA5180
  funder_name: NIMS
  description: "セラミックスプロセッシング\t-\t60\r\n"

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Process for specimen treatment



## Computational method



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## Fileset

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  filename: JACERS-47914.R1-Proof-hi.pdf
  content_type: application/pdf
  size: 5946345
  md5: 964f1db85cbc81a4debbd38a1d6348a8

## Thumbnail

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filename: JACERS-47914.R1-Proof-hi.pdf