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A Theoretical Estimate of Solution‐Precipitation Creep in MgO‐Fluxed Si 3 N 4
Author(s) -
Tsai R. L.,
Raj R.
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.tb10458.x
Subject(s) - creep , dissolution , precipitation , materials science , thermodynamics , mineralogy , metallurgy , geology , chemistry , physics , meteorology
The creep rate in MgO‐fluxed hot‐pressed Si 3 N 4 is calculated by means of a model which assumes a solution‐precipitation mechanism, and by using the kinetic data for the dissolution rate of β‐Si 3 N 4 in an Mg‐Si‐O‐N glass (which was obtained in independent experiments). Despite simplifying assumptions, the predictions match quite favorably with experimental measurements of creep in hot‐pressed Si 3 N 4 .