# Effects of Trace Impurities in Ni-Base Single Crystal Superalloys on High-Temperature Properties and Disablement of Impurities by CaO for Recycle of Superalloys

https://mdr.nims.go.jp/datasets/49fb811d-4218-487c-a693-669341c43b44

## File

- [proceedings_Kawagishi20240131r.pdf](https://mdr.nims.go.jp/filesets/1a4d0a63-fa14-492c-a6ae-ee739a6ad99f/download) ([Detail](https://mdr.nims.go.jp/filesets/1a4d0a63-fa14-492c-a6ae-ee739a6ad99f.md))

## Id

49fb811d-4218-487c-a693-669341c43b44

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-18T02:36:01.971402Z

## Updated at

2025-08-20T23:30:15.893121Z

## Published at

2025-08-20T23:19:08.716015Z

## Doi

https://doi.org/10.48505/nims.4871

## First published url

https://doi.org/10.1007/978-3-031-63937-1_52

## Date published

2024-08-21

## Recorded date published

2024

## Resource type

book_part

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Effects of Trace Impurities in Ni-Base Single Crystal Superalloys on High-Temperature
    Properties and Disablement of Impurities by CaO for Recycle of Superalloys
  title_type: original
  lang: en

## Description

- description: In determining the specifications for the production or recycling process
    of Ni-base single crystal superalloys, it is important to clarify the allowable
    trace impurity concentration. In this study, the effects of Pb and Sb on high-temperature
    strength and oxidation resistance of 6th generation superalloy TMS-238 were summarized.
    It was found that both Sb and Pb do not have a large effect on creep rupture life,
    but they degrade oxidation resistance. The removal of impurities by melting in
    a CaO crucible was tested and its mechanism was examined. It was found that Ca
    forms a compound with impurities within the alloy and prevents the segregation
    of impurities at the oxide film/substrate interface. The effect of CaO was also
    confirmed in an experiment in which impurity S was removed from 1st generation
    Ni-base superalloy TMS-1700 by adding CaO particles in a 3-ton commercial melting
    furnace. Similar results were obtained for this alloy, where it was also found
    that CaS had formed inside the alloy, thus improving the oxidation resistance
    of TMS-1700.
  description_type: abstract
  lang: und

## Creator

- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
- name: Chihiro Tabata
  role: author
- name: Tadaharu Yokokawa
  role: author
- name: Yuji Takata
  role: author
  orcid: https://orcid.org/0009-0006-9362-0250
- name: Michinari Yuyama
  role: author
  orcid: https://orcid.org/0000-0001-7350-2608
- name: Takahide Horie
  role: author
- name: Hirotoshi Maezawa
  role: author
- name: Shinsuke Suzuki
  role: author
- name: Hiroshi Harada
  role: author

## Contact agent



## Publisher

organization: Springer Nature Switzerland

## Managing organization



## Keyword

- subject: Creep
  schema: not_defined
- subject: Single crystal
  schema: not_defined
- subject: Impurity
  schema: not_defined
- subject: Oxidation
  schema: not_defined
- subject: CaO
  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: 555
  end_page: 560

## Conference



## Related item



## Funding

- identifier: " the Advanced Low Carbon Technology Research and Development Program
    (ALCA)　JPNJAL1302"
  funder_name: JST
- identifier: " JPNP21007"
  funder_name: NEDO

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## Fileset

- id: 1a4d0a63-fa14-492c-a6ae-ee739a6ad99f
  filename: proceedings_Kawagishi20240131r.pdf
  content_type: application/pdf
  size: 320944
  md5: 520d67e0204d5821312dfb9cfb09da36

## Thumbnail

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filename: proceedings_Kawagishi20240131r.pdf