# Interfacial Strength Evaluation Between Sulfur-Segregated Al2O3 and Ni–Al Single Crystal Alloy Using Nanoindentation

https://mdr.nims.go.jp/datasets/d0a93e59-8190-4b96-a625-82f6f44cd35a

## File

- [M187429 _revised version_ver2.pdf](https://mdr.nims.go.jp/filesets/4b77bc30-3d3e-4943-9d1f-ce73789a64c0/download) ([Detail](https://mdr.nims.go.jp/filesets/4b77bc30-3d3e-4943-9d1f-ce73789a64c0.md))

## Id

d0a93e59-8190-4b96-a625-82f6f44cd35a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-14T04:57:17.967014Z

## Updated at

2025-08-20T23:30:48.173712Z

## Published at

2025-08-20T23:19:16.988748Z

## Doi

https://doi.org/10.48505/nims.5226

## First published url

https://doi.org/10.1007/978-3-031-63937-1_56

## Date published

2024-08-21

## Recorded date published

2024

## Resource type

conference_paper

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Interfacial Strength Evaluation Between Sulfur-Segregated Al2O3 and Ni–Al
    Single Crystal Alloy Using Nanoindentation
  title_type: original
  lang: en

## Description

- description: Ni-base superalloys have excellent oxidation resistance, but impurity
    S drastically decreases their properties. This is due to the segregation of S
    to the oxide/substrate interface, but direct and quantitative measurements of
    the interfacial strength in relation to the S segregation level have not been
    widely conducted. The objective of this research is to quantitatively analyze
    the interfacial strength between the Al2O3 layer and Ni-base substrate interfacial
    strength, depending on the S segregation level, using nanoindentation. Ni-9.8
    wt.% Al alloys were prepared by melting the material using either an Al2O3 crucible
    (high Sinterface alloy) or a CaO crucible (low Sinterface alloy). Nanoindentation
    tests using a 60 degree pyramidal diamond indenter were conducted, and the cross-sections
    of both specimens exposed the (100) plane. Indentation near the interface formed
    cracks at the boundary between the two layers, which can be observed as pop-ins
    in the load-depth curves. The amount of load at the initial pop-in most likely
    represents the interfacial strength between the Al2O3 layer and Ni-base substrate.
    A Weibull analysis of results showed that suppression of the S segregation level
    increased the critical β scale parameter for crack formation by 650 μN. This suggests
    that we were able to successfully compare the effect of S segregation on the interfacial
    strength between the Al2O3 layer and the Ni-base substrate quantitatively.
  description_type: abstract
  lang: und

## Creator

- name: Chihiro Tabata
  role: author
  orcid: https://orcid.org/0000-0001-6597-4998
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- 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: Takahito Ohmura
  role: author
  orcid: https://orcid.org/0000-0001-7528-566X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Tadaharu Yokokawa
  role: author
- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Shinsuke Suzuki
  role: author

## Contact agent



## Publisher

organization: Springer Nature Switzerland

## Managing organization



## Keyword

- subject: nanoindentation
  schema: not_defined
- subject: oxidation
  schema: not_defined
- subject: sulfur segregation
  schema: not_defined
- subject: interfacial strength
  schema: not_defined
- subject: Ni-base single crystal alloy
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-08-21
end_date: 2025-08-21

## Journal

- title: The Minerals, Metals & Materials Series
  issn: '23671181'
  start_page: 598
  end_page: 605

## Conference



## Related item



## Funding



## 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



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## Custom property



## Fileset

- id: 4b77bc30-3d3e-4943-9d1f-ce73789a64c0
  filename: M187429 _revised version_ver2.pdf
  content_type: application/pdf
  size: 1010556
  md5: be290b5b45f7917a17f4df344a85ab34

## Thumbnail

fileset_id: 4b77bc30-3d3e-4943-9d1f-ce73789a64c0
filename: M187429 _revised version_ver2.pdf