Coble creep, cavity sintering, and cavity growth

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6979807

Schneibel, J H; Martinez, L

The close relationships between Coble creep, cavity sintering and cavity growth are discussed. The measurement of size distributions of crack-like cavities is useful for determining grain boundary and surface diffusivities. In nickel aluminide (Ni/sub 3/Al) intermetallics the grain boundary diffusivity determined in this manner agrees well with that obtained from Coble creep measurements. A critical comparison of the zero-creep technique and the ''zero-growth'' technique (critical cavity radius determination) to measure surface free energies is given. 20 refs., 6 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6979807
• Report Number(s): CONF-8805164-1; ON: DE88013846
• Resource Relation: Conference: Symposium on the sintering of advanced ceramics, Cincinnati, OH, USA, 1 May 1988; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CAVITIES
NICKEL ALLOYS
CREEP
DEFECTS
DIFFUSION
EQUATIONS
GRAIN BOUNDARIES
INTERMETALLIC COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
SINTERING
ALLOYS
CRYSTAL STRUCTURE
FABRICATION
MECHANICAL PROPERTIES
MICROSTRUCTURE
360103* - Metals & Alloys- Mechanical Properties
360101 - Metals & Alloys- Preparation & Fabrication
360102 - Metals & Alloys- Structure & Phase Studies