# Evolution of microstructure and defects in sintering of tape-cast alumina laminates observed by synchrotron X-ray multiscale tomography

https://mdr.nims.go.jp/datasets/15ecfb89-5d25-4d47-badf-37d146b43564

## File

- [Ceramics International_revised_Apr4 (clean).docx](https://mdr.nims.go.jp/filesets/bf5d3bc8-a3a9-4ba9-9db8-282b6a38a126/download) ([Detail](https://mdr.nims.go.jp/filesets/bf5d3bc8-a3a9-4ba9-9db8-282b6a38a126.md))

## Id

15ecfb89-5d25-4d47-badf-37d146b43564

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-21T00:30:22.034485Z

## Updated at

2024-08-22T05:43:41.468331Z

## Published at

2026-04-10T23:19:59.869523Z

## Doi

https://doi.org/10.48505/nims.4671

## First published url

https://doi.org/10.1016/j.ceramint.2024.04.096

## Date published

2024-04-10

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Evolution of microstructure and defects in sintering of tape-cast alumina
    laminates observed by synchrotron X-ray multiscale tomography
  title_type: original
  lang: en

## Description

- description: Processing-induced defects affect the performance and reliability of
    multilayered ceramics. They are introduced from the raw powder, or during tape
    casting, drying, thermo-compression, binder burnout, and sintering. Using synchrotron
    X-ray multiscale tomography, we investigated how the microstructural heterogeneities
    and various defects evolve in the sintering of tape-cast alumina laminate. The
    strength-limiting defects were identified as large defects at the layer interface
    and peculiar crack-like defects formed around large inclusions contained in the
    raw powder. Although a slurry might be uniform in colloidal processing, the particle
    packing in the tape was heterogeneous. This heterogeneity determined the spatial
    distribution of pores and formed complex pores in later stages. Moreover, we found
    the formation of flake-like sheets in slurry due to the self-assembly of polyhedral
    alumina crystals. This phenomenon has the potential to be applied in the manufacture
    of 2D micro-sheets controlled to the thickness of a single particle.
  description_type: abstract
  lang: und

## Creator

- 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: Ryutaro Usukawa
  role: author
- name: Toshio Osada
  role: author
  orcid: https://orcid.org/0000-0003-1539-9264
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Naoki Kondo
  role: author
- name: Hideaki Nakajima
  role: author
- name: Toshiya Okazaki
  role: author
- name: Shingo Machida
  role: author
- name: Yutaro Arai
  role: author
- name: Ryo Inoue
  role: author
- name: Hideki Kakisawa
  role: author
  orcid: https://orcid.org/0000-0002-7448-0989
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kazuya Shimoda
  role: author
  orcid: https://orcid.org/0000-0001-9051-6534
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Akihisa Takeuchi
  role: author
- name: Masayuki Uesugi
  role: author
- name: Fumihiro Wakai
  role: author
  orcid: https://orcid.org/0000-0002-8391-139X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ceramic tape casting
  schema: not_defined
- subject: Synchrotron X-ray tomography
  schema: not_defined
- subject: 3D microstructure
  schema: not_defined
- subject: Sintering
  schema: not_defined

## Rights

- description: "© 2024. \r\nLicensed under the Creative Commons 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: 2024-04-10
end_date: 2026-04-11

## Journal

- title: Ceramics International
  issn: '02728842'
  volume: '50'
  issue: '19'
  start_page: 37402
  end_page: 37411

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: bf5d3bc8-a3a9-4ba9-9db8-282b6a38a126
  filename: Ceramics International_revised_Apr4 (clean).docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 10182648
  md5: b86df903974f6fd345484479c2c11ba9

## Thumbnail

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filename: Ceramics International_revised_Apr4 (clean).docx