# High‐temperature deformation and consolidation of polycrystalline α‐SiC by spark plasma sintering

https://mdr.nims.go.jp/datasets/fd799aef-2cd8-44d2-866f-9d2f7d9e6446

## File

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## Id

fd799aef-2cd8-44d2-866f-9d2f7d9e6446

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-13T00:50:52.470139Z

## Updated at

2025-10-22T23:30:26.086028Z

## Published at

2025-10-22T23:18:20.985419Z

## Doi

https://doi.org/10.48505/nims.4950

## First published url

https://doi.org/10.1111/ijac.14967

## Date published

2024-10-22

## Recorded date published

2025-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: High‐temperature deformation and consolidation of polycrystalline α‐SiC by
    spark plasma sintering
  title_type: original
  lang: en

## Description

- description: The main objective of this investigation is the consolidation and flexural
    strength of alpha silicon carbide ceramics produced without additives by spark
    plasma sintering. Using the design of the experiment method, we optimized temperature
    and dwell to achieve fully dense silicon carbide bulks. The consolidation process
    of silicon carbide was analyzed similarly to the creep of bulk ceramics, and it
    was determined that the activation energy for the densification process was 596±39
    kJ/mol, while the stress exponent n was below 2. Bulk additive-free silicon carbide
    ceramics gradually increased flexural strength as the temperature rose to 2000
    °C. The flexural strength at 2000 °C was influenced by the loading rate, and under
    2.5 mm/min, it reached a maximum of 2.08 GPa. To explain this phenomenon, a deformation
    mechanisms map was created, indicating that diffusion creep is the most probable
    mechanism for the strain sensitivity of SiC at 2000 °C. Transmission electron
    microscopy indicated a substantial rise in twin density within the ⍺-SiC grains
    at 2000 °C, indicating the activation of a previously unreported self-reinforcing
    mechanism.
  description_type: abstract
  lang: und

## Creator

- name: Dmytro Demirskyi
  role: author
  orcid: https://orcid.org/0000-0002-6870-6726
- name: Hossein Sepehri‐Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
- name: Oleg O. Vasylkiv
  role: author
  orcid: https://orcid.org/0000-0002-5041-6130

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Polycrystalline ⍺-SiC
  schema: not_defined
- subject: High temperature deformation
  schema: not_defined
- subject: spark plasma sintering
  schema: not_defined
- subject: microstructure
  schema: not_defined

## Rights

- description: 'This is the peer reviewed version of the following article: Demirskyi
    D, Sepehri-Amin H, Vasylkiv OO. High-temperature deformation and consolidation
    of polycrystalline α-SiC by spark plasma sintering. Int J Appl Ceram Technol.
    2024;e14967, which has been published in final form at https://doi.org/10.1111/ijac.14967.
    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: 2024-10-22
end_date: 2025-10-22

## Journal

- title: International Journal of Applied Ceramic Technology
  issn: 1546542X

## Conference



## Related item



## Funding

- identifier: AB3080
  funder_name: NIMS
  description: 多結晶光学材料 Research toward Innovative Optical Materials
- identifier: KCB101
  funder_name: JSPS
  description: 非晶質相形成による超高温セラミックスの高

## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

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  filename: ACT_9398_R1_main document Aug 27.pdf
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  size: 3700337
  md5: 1cb90075a2c46022e7b6af2eb3b23771
- id: e0ca39e4-55ef-49fd-826f-85b307e6e5ae
  filename: Supmat for  ijac.14967.pdf
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  size: 955494
  md5: 3108de6fb47ccc4da67be5a99d68145b

## Thumbnail

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filename: Supmat for  ijac.14967.pdf