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Models for Kinetics of Solid State Sintering
Author(s) -
WONG BOON,
PASK JOSEPH A.
Publication year - 1979
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1979.tb19039.x
Subject(s) - sintering , isothermal process , materials science , grain growth , grain boundary , kinetics , mass transport , kinetic energy , thermodynamics , grain size , mineralogy , composite material , microstructure , chemistry , classical mechanics , physics , engineering physics
Kinetic equations for the isothermal densification of a single‐phase powder compact are formulated for the initial and intermediate stages of sintering; they are identified as continuous open‐pore stages, with a decreasing number of voids and grains per unit volume accompanied by grain growth in the intermediate stage. Each stage can be represented by an equation based on mass transport along the forming grain boundary to the “neck” region as the rate‐controlling step or by one on movement from the neck to the free surface regions as the rate‐controlling step.