Atomic structure of heterophase interfaces

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:6229402

Merkle, K L; Buckett, M I; Gao, Y

High-resolution electron microscopy (HREM) has been used to study internal interfaces between dissimilar materials, notably ceramic/metal interfaces. Structures observed for system with small and large misfits are compared in metal/metal, metal/ceramic, and ceramic/ceramic boundaries. The interfaces were prepared by a variety of techniques, including internal reduction, internal oxidation, and epitaxial growth by MOCVD and special thin-film techniques. While interfaces produced by internal oxidation and reduction in fcc systems typically form boundaries on (111) planes, non-equilibrium boundaries have also been generated using special thin film techniques. All boundaries can be characterized by their tendency to form coherent structures. While it appears that the amount of misfit and the bond strength primarily determine the degree of coherency, kinetic factors and substrate defects also seem to play an important role in determining the local defect structure at the boundary and the type of misfit localization. 24 refs., 9 figs., 1 tab.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6229402
• Report Number(s): ANL/CP-73164; CONF-9106236-2; ON: DE92003402
• Resource Relation: Conference: International symposium on metal/ceramic interfaces, Irsee (Germany), 30 Jun - 5 Jul 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
ELECTRON MICROSCOPY
INTERFACES
CRYSTAL DEFECTS
METALS
CHEMICAL VAPOR DEPOSITION
FCC LATTICES
NUCLEATION
PRECIPITATION
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
CHEMICAL COATING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DEPOSITION
ELEMENTS
FILMS
MICROSCOPY
SEPARATION PROCESSES
SURFACE COATING
360102* - Metals & Alloys- Structure & Phase Studies
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies