# Mechanical behaviours of hot-pressed rare-earth oxide (RE = Y and La)-doped TaB2-SiC composites

https://mdr.nims.go.jp/datasets/1096541b-fe9e-4cad-b1c8-480894134e22

## Files

- [Text-DMR.pdf](https://mdr.nims.go.jp/filesets/18403794-1d18-4063-b240-d9113965a202/download) ([Detail](https://mdr.nims.go.jp/filesets/18403794-1d18-4063-b240-d9113965a202.md))

## Id

1096541b-fe9e-4cad-b1c8-480894134e22

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-11T03:50:39.413992Z

## Updated at

2024-09-12T02:08:33.297418Z

## Published at

2025-12-19T11:59:53.127398Z

## Doi

https://doi.org/10.48505/nims.4740

## First published url

https://doi.org/10.1016/j.jeurceramsoc.2023.10.057

## Date published

2023-10-29

## Recorded date published

2024-3

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Mechanical behaviours of hot-pressed rare-earth oxide (RE = Y and La)-doped
    TaB2-SiC composites
  title_type: original
  lang: en

## Description

- description: 'In this study, TaB2-20 vol% SiC composites with and without rare-earth
    oxides (RE2O3, RE = Y and La) were fabricated via hot pressing at or above 1800°C.
    3 vol% RE2O3 additions improved the sinterability of TaB2-SiC composite and resulted
    in a finer microstructure in addition to the crystalline RE2Si2O7 grain-boundary
    phase. The shear and Young’s moduli as well as hardness of the composites decreased
    with RE2O3 additives. Conversely, the fracture toughness of the composites increased
    with RE2O3 additives and the toughening effect was better for La2O3 than for Y2O3.
    On the other hand, the additions of RE2O3 substantially enhanced the flexural
    strength and the strengthening effect was significantly stronger for Y2O3 than
    for La2O3, the strengthening was ineffective at or above 1400°C, however. Additionally,
    the temperature dependence of strengths varied with and without RE2O3 additions,
    as a result of the difference in the chemistry of the intergranular phases. '
  description_type: abstract
  lang: und

## Creator

- name: Shuqi Guo
  role: author
  orcid: https://orcid.org/0000-0002-2589-7016
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Gaku Okuma
  role: author
  orcid: https://orcid.org/0000-0002-2997-9166
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kimiyoshi Naito
  role: author
  orcid: https://orcid.org/0000-0002-3334-4876
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hideki Kakisawa
  role: author
  orcid: https://orcid.org/0000-0002-7448-0989
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: TaB2
  schema: not_defined
- subject: SiC
  schema: not_defined
- subject: Rare-earth oxide
  schema: not_defined
- subject: Microstructure
  schema: not_defined
- subject: Mechanical properties
  schema: not_defined

## Rights

- description: "© 2023. This manuscript version is made available under the CC-BY-NC-ND
    4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/"
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-10-29
end_date: 2025-10-29

## Journal

- title: Journal of the European Ceramic Society
  issn: '09552219'
  volume: '44'
  issue: '3'
  start_page: 1445
  end_page: 1457

## Conference



## Related item



## Funding

- identifier: JPNP22005
  funder_name: New Energy and Industrial Technology Development Organization

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 18403794-1d18-4063-b240-d9113965a202
  filename: Text-DMR.pdf
  content_type: application/pdf
  size: 1169390
  md5: 86352b09fa315eeb595936b62bccbe09

## Thumbnail

fileset_id: 18403794-1d18-4063-b240-d9113965a202
filename: Text-DMR.pdf