Microstructure development during final/intermediate stage sintering--II. Grain and pore coarsening

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

DOI:https://doi.org/10.1016/0001-6160(82)90146-8· OSTI ID:6041055

Spears, M A; Evans, A G

The rates of grain and pore coarsening and of pore shrinkage that occur during sintering have been analyzed in the presence of porosity at three-grain junctions. Optimum sintering conditions that exclude pore coarsening have been identified. The pore coarsening that occurs under sub-optimal sintering conditions depends on the dominant diffusivities, the grain boundary mobility and the dihedral angle. The pore sizes that develop during sintering have been compared with the critical pore size for pore-grain boundary breakaway, and conditions for averting breakaway discussed.

• 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: 6041055
• 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
MATERIALS
MICROSTRUCTURE
OPTIMIZATION
ORIENTATION
POROSITY
SINTERED MATERIALS
SINTERING
SIZE
TEXTURE