Microstructure development during final/intermediate stage sintering--I. pore/grain boundary separation

Journal Article · Thu Jul 01 00:00:00 EDT 1982 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(82)90145-6· OSTI ID:5830751

Hsueh, C H; Coble, R L; Evans, A G

The motion of pores attached to two grain interfaces has been analyzed. It is shown that pores exhibit a maximum steady state velocity that varies with the dihedral angle and that the onset of non-steady state pore motion results in grain boundary convergence and the separation of the pore from the grain boundary. The peak steady pore velocity has been compared with grain boundary velocities for several grain configurations, in order to identify a critical condition for the onset of separation. This comparison indicates that pore size must be maintained below a critical value to ensure attachment.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Materials Science and Mineral Engineering, University of California, Berkeley, CA 94720
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5830751
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 30:7; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
CRITICALITY
CRYSTAL STRUCTURE
ENERGY
FABRICATION
GRAIN BOUNDARIES
GRAIN ORIENTATION
GRAIN SIZE
LIMITING VALUES
MATERIALS
MICROSTRUCTURE
ORIENTATION
POROSITY
SINTERED MATERIALS
SINTERING
SIZE