Field-evaporation of {0 0 1} planes and site occupancy of Pt in β-NiAl
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| Title: | Field-evaporation of {0 0 1} planes and site occupancy of Pt in β-NiAl |
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| Authors: | Angenete, J.1 johan@angenete.com, Stiller, K.1, Danoix, F.2 |
| Source: | Materials Science & Engineering: A. Jul2003, Vol. 353 Issue 1/2, p68. 6p. |
| Subjects: | Field ion microscopes, Intermetallic compounds |
| Abstract: | In order to improve the high-temperature oxidation resistance of Ni based superalloy components for aeroengines and gas turbines, Pt-modified aluminide diffusion coatings are often used. However, no detailed models explaining the influence of Pt on the microstructural development of the coating during heat treatment have been reported. The main reason for this is the limited amount of thermodynamical and diffusion data for the ternary Ni–A1–Pt system. The aim of this study is to determine the site occupancy of 1 at.% Pt in solid solution in stoichiometric β-NiAl by means of atom probe analysis. The analysis was performed along the 〈0 0 1〉 direction of the specimen in order to resolve the pure {0 0 1} Ni and Al planes, respectively. It was found that Pt was distributed evenly on the Al and Ni sites. Further statistical analysis (Stacked Profile method) indicated a very slight preference to Al sites. Also some results on the field-evaporation behaviour of {0 0 1} Ni and Al planes were achieved. Ion trajectory aberrations at the {0 0 1} pole and at zone lines were observed and compared with previous findings and computer simulations for similar materials. [Copyright &y& Elsevier] |
| Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 9856115 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Field-evaporation of {0 0 1} planes and site occupancy of Pt in β-NiAl – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Angenete%2C+J%2E%22">Angenete, J.</searchLink><relatesTo>1</relatesTo><i> johan@angenete.com</i><br /><searchLink fieldCode="AR" term="%22Stiller%2C+K%2E%22">Stiller, K.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Danoix%2C+F%2E%22">Danoix, F.</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+Science+%26+Engineering%3A+A%22">Materials Science & Engineering: A</searchLink>. Jul2003, Vol. 353 Issue 1/2, p68. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Field+ion+microscopes%22">Field ion microscopes</searchLink><br /><searchLink fieldCode="DE" term="%22Intermetallic+compounds%22">Intermetallic compounds</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In order to improve the high-temperature oxidation resistance of Ni based superalloy components for aeroengines and gas turbines, Pt-modified aluminide diffusion coatings are often used. However, no detailed models explaining the influence of Pt on the microstructural development of the coating during heat treatment have been reported. The main reason for this is the limited amount of thermodynamical and diffusion data for the ternary Ni–A1–Pt system. The aim of this study is to determine the site occupancy of 1 at.% Pt in solid solution in stoichiometric β-NiAl by means of atom probe analysis. The analysis was performed along the 〈0 0 1〉 direction of the specimen in order to resolve the pure {0 0 1} Ni and Al planes, respectively. It was found that Pt was distributed evenly on the Al and Ni sites. Further statistical analysis (Stacked Profile method) indicated a very slight preference to Al sites. Also some results on the field-evaporation behaviour of {0 0 1} Ni and Al planes were achieved. Ion trajectory aberrations at the {0 0 1} pole and at zone lines were observed and compared with previous findings and computer simulations for similar materials. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/S0921-5093(02)00669-X Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 68 Subjects: – SubjectFull: Field ion microscopes Type: general – SubjectFull: Intermetallic compounds Type: general Titles: – TitleFull: Field-evaporation of {0 0 1} planes and site occupancy of Pt in β-NiAl Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Angenete, J. – PersonEntity: Name: NameFull: Stiller, K. – PersonEntity: Name: NameFull: Danoix, F. IsPartOfRelationships: – BibEntity: Dates: – D: 25 M: 07 Text: Jul2003 Type: published Y: 2003 Identifiers: – Type: issn-print Value: 09215093 Numbering: – Type: volume Value: 353 – Type: issue Value: 1/2 Titles: – TitleFull: Materials Science & Engineering: A Type: main |
| ResultId | 1 |
