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Influence of Particle Size on the Sintering Kinetics of Ultrapure Sodium Chloride
Author(s) -
THOMPSON R. J.,
MUNIR Z. A.
Publication year - 1982
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.1151-2916.1982.tb10450.x
Subject(s) - particle size , sintering , particle (ecology) , grain size , materials science , sodium , evaporation , diffusion , range (aeronautics) , particle size distribution , chloride , kinetics , chemical engineering , mineralogy , chemistry , metallurgy , composite material , thermodynamics , oceanography , physics , quantum mechanics , engineering , geology
Sodium chloride particles with size fractions covering the range <38 to 180 μm were sintered in air at T=973 to 1048 K. At any given time and temperature, the degree of densification was found to be a decreasing function of particle size. Calculated activation energies from these densification results showed a corresponding dependence on particle size, i.e. higher energies were associated with the sintering of larger size fractions. Surface‐area reduction measurements showed a similar trend with respect to particle size. These results are discussed in terms of simultaneous contributions from densifying (bulk diffusion) and nondensifying (evaporation‐condensation) processes in the sintering of sodium chloride.