On the atomic structure of the Nb/Al2O3 interface and the growth of Al2O3 particles

M. Kuwabara, John Spence, M. Ruhle

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The growth mechanism for small precipitates of Al2O3 formed by internal oxidation in the Nb-Al2O3 interface is studied in detail. The observations show that the Nb (001)/Al2O3 (00.1) interface is almost atomically flat and that there are no interface compounds. We suggest that the final layer on the Al2O3 side of this interface consists of oxygen atoms. The effects of image forces on misfit dislocations are found to result in a standoff distance between dislocation cores and the interface, in good agreement with the recent theory. The implications of this for the strength of metal-ceramic bonding are discussed.

Original languageEnglish (US)
Pages (from-to)972-977
Number of pages6
JournalJournal of Materials Research
Volume4
Issue number4
StatePublished - Jul 1989

Fingerprint

Internal oxidation
Cermets
Dislocations (crystals)
atomic structure
Precipitates
Oxygen
Atoms
ceramic bonding
metal bonding
precipitates
oxygen atoms
oxidation

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

On the atomic structure of the Nb/Al2O3 interface and the growth of Al2O3 particles. / Kuwabara, M.; Spence, John; Ruhle, M.

In: Journal of Materials Research, Vol. 4, No. 4, 07.1989, p. 972-977.

Research output: Contribution to journalArticle

@article{af3d819319b94feabc966f9ff8e55e76,
title = "On the atomic structure of the Nb/Al2O3 interface and the growth of Al2O3 particles",
abstract = "The growth mechanism for small precipitates of Al2O3 formed by internal oxidation in the Nb-Al2O3 interface is studied in detail. The observations show that the Nb (001)/Al2O3 (00.1) interface is almost atomically flat and that there are no interface compounds. We suggest that the final layer on the Al2O3 side of this interface consists of oxygen atoms. The effects of image forces on misfit dislocations are found to result in a standoff distance between dislocation cores and the interface, in good agreement with the recent theory. The implications of this for the strength of metal-ceramic bonding are discussed.",
author = "M. Kuwabara and John Spence and M. Ruhle",
year = "1989",
month = "7",
language = "English (US)",
volume = "4",
pages = "972--977",
journal = "Journal of Materials Research",
issn = "0884-2914",
publisher = "Materials Research Society",
number = "4",

}

TY - JOUR

T1 - On the atomic structure of the Nb/Al2O3 interface and the growth of Al2O3 particles

AU - Kuwabara, M.

AU - Spence, John

AU - Ruhle, M.

PY - 1989/7

Y1 - 1989/7

N2 - The growth mechanism for small precipitates of Al2O3 formed by internal oxidation in the Nb-Al2O3 interface is studied in detail. The observations show that the Nb (001)/Al2O3 (00.1) interface is almost atomically flat and that there are no interface compounds. We suggest that the final layer on the Al2O3 side of this interface consists of oxygen atoms. The effects of image forces on misfit dislocations are found to result in a standoff distance between dislocation cores and the interface, in good agreement with the recent theory. The implications of this for the strength of metal-ceramic bonding are discussed.

AB - The growth mechanism for small precipitates of Al2O3 formed by internal oxidation in the Nb-Al2O3 interface is studied in detail. The observations show that the Nb (001)/Al2O3 (00.1) interface is almost atomically flat and that there are no interface compounds. We suggest that the final layer on the Al2O3 side of this interface consists of oxygen atoms. The effects of image forces on misfit dislocations are found to result in a standoff distance between dislocation cores and the interface, in good agreement with the recent theory. The implications of this for the strength of metal-ceramic bonding are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0024702136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024702136&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0024702136

VL - 4

SP - 972

EP - 977

JO - Journal of Materials Research

JF - Journal of Materials Research

SN - 0884-2914

IS - 4

ER -