# High-Temperature Oxidation of NbTi-Bearing Refractory Medium- and High-Entropy Alloys

https://mdr.nims.go.jp/datasets/1e04d89d-1904-4bd4-8648-ae35bb1e93ba

## File

- [materials-17-04579.pdf](https://mdr.nims.go.jp/filesets/f5776b5a-c92f-412b-8a2a-76c1c8c72c2c/download) ([Detail](https://mdr.nims.go.jp/filesets/f5776b5a-c92f-412b-8a2a-76c1c8c72c2c.md))

## Id

1e04d89d-1904-4bd4-8648-ae35bb1e93ba

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-07T00:54:15.739489Z

## Updated at

2024-10-08T03:31:19.687503Z

## Published at

2024-10-08T03:31:19.769026Z

## Doi



## First published url

https://doi.org/10.3390/ma17184579

## Date published

2024-09-18

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: High-Temperature Oxidation of NbTi-Bearing Refractory Medium- and High-Entropy
    Alloys
  title_type: original
  lang: en

## Description

- description: The oxidation of six NbTi-i refractory medium- and high-entropy alloys
    (NbTi + Ta, NbTi + CrTa, NbTi + AlTa, NbTi + AlMo, NbTi + AlMoTa and NbTi + AlCrMo)
    were investigated at 1000 °C for 20 h. According to our observation, increased
    Cr content promoted the formation of protective CrNbO4 and Cr2O3 oxides in NbTi
    + CrTa and NbTi + AlCrMo, enhancing oxidation resistance. The addition of Al resulted
    in the formation of AlTi-rich oxide in NbTi + AlTa. Ta addition resulted in the
    formation of complex oxides (MoTiTa8O25 and TiTaO4) and decreased oxidation resistance.
    Meanwhile, Mo’s low oxygen solubility could be beneficial for oxidation resistance
    while protective Cr2O3/CrNbO4 layers were formed. In NbTi + Ta, NbTi + AlTa and
    NbTi + CrTa, a considerable quantity of Ti-rich oxide was observed at the interdendritic
    region. In NbTi + AlCrMo, the enrichment of Cr and Ti at the interdendritic region
    could fasten the rate of oxidation. Compared to the recent research, NbTi + AlCrMo
    alloy is a light-weight oxidation-resistant alloy (weight gain of 1.29 mg/cm2
    at 1000 °C for 20 h and low density (7.2 g/cm3)).
  description_type: abstract
  lang: und

## Creator

- name: Wei-Chih Lin
  role: author
  orcid: https://orcid.org/0000-0002-0143-1174
- name: Yi-Wen Lien
  role: author
- name: Louis Etienne Moreau
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hideyuki Murakami
  role: author
  orcid: https://orcid.org/0000-0001-8220-5816
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kai-Chi Lo
  role: author
- name: Stéphane Gorsse
  role: author
  orcid: https://orcid.org/0000-0003-1966-8476
- name: An-Chou Yeh
  role: author
  orcid: https://orcid.org/0000-0002-9460-8345

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: refractory high-entropy alloys
  schema: not_defined
- subject: chemical segregation
  schema: not_defined
- subject: oxidation
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Materials
  issn: '19961944'
  volume: '17'
  issue: '18'
  article_number: '4579'

## Conference



## Related item



## Funding

- funder_name: the “High Entropy Materials Center”
- identifier: NSTC 112-2927-I-007-504
  funder_name: the National Science and Technology Council (NSTC) in Taiwan
- identifier: NSTC 110-2221-E-007-020-MY3
  funder_name: the National Science and Technology Council (NSTC) in Taiwan
- identifier: NSTC 112-2224-E-007-003
  funder_name: the National Science and Technology Council (NSTC) in Taiwan

## 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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## Fileset

- id: f5776b5a-c92f-412b-8a2a-76c1c8c72c2c
  filename: materials-17-04579.pdf
  content_type: application/pdf
  size: 5513800
  md5: 6e589b24d29161275ae0ad1cd4fcd4b1

## Thumbnail

fileset_id: f5776b5a-c92f-412b-8a2a-76c1c8c72c2c
filename: materials-17-04579.pdf