Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale

Ho Jang, D. N. Seidman, K. L. Merkle

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The chemical composition and structure of the Cu/MgO {222} heterophase interface is studied using a combination of transmission electron microscopy, high resolution electron microscopy and atom-probe field-ion microscopy techniques. Cu/MgO {222} interfaces are produced by forming MgO precipitates in a Cu matrix by internally oxidizing a Cu-2.8 at.% Mg alloy. The MgO precipitates have a semicoherent interface with the Cu matrix and they exhibit a cube-on-cube orientation relationship. The octahedrally-shaped MgO precipitates were analyzed using APFIM by dissecting along a 〈111〉 direction on an atomic scale. In this manner an MgO precipitate, with a {222} plane perpendicular to the axis of the APFIM, is uncovered after the Cu matrix has been mass analyzed. It is found that the terminating {222} plane of an MgO precipitate is pure oxygen, and the second {222} plane is pure Mg.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publ
Pages397-400
Number of pages4
Volume155-5
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the International Meeting on Reactive Phase Formation at Interfaces and Diffusion Processes - Aussois, Fr
Duration: 1993 May 211993 May 28

Other

OtherProceedings of the International Meeting on Reactive Phase Formation at Interfaces and Diffusion Processes
CityAussois, Fr
Period93/5/2193/5/28

Fingerprint

Precipitates
Chemical analysis
High resolution electron microscopy
Microscopic examination
Ions
Oxygen
Transmission electron microscopy
Atoms

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Jang, H., Seidman, D. N., & Merkle, K. L. (1994). Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale. In Materials Science Forum (Vol. 155-5, pp. 397-400). Trans Tech Publ.

Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale. / Jang, Ho; Seidman, D. N.; Merkle, K. L.

Materials Science Forum. Vol. 155-5 Trans Tech Publ, 1994. p. 397-400.

Research output: Chapter in Book/Report/Conference proceedingChapter

Jang, H, Seidman, DN & Merkle, KL 1994, Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale. in Materials Science Forum. vol. 155-5, Trans Tech Publ, pp. 397-400, Proceedings of the International Meeting on Reactive Phase Formation at Interfaces and Diffusion Processes, Aussois, Fr, 93/5/21.
Jang H, Seidman DN, Merkle KL. Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale. In Materials Science Forum. Vol. 155-5. Trans Tech Publ. 1994. p. 397-400
Jang, Ho ; Seidman, D. N. ; Merkle, K. L. / Composition and structure of the Cu/MgO {222} heterophase interface on an atomic scale. Materials Science Forum. Vol. 155-5 Trans Tech Publ, 1994. pp. 397-400
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